Toyota 4Runner Toyota 4Runner

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Toyota 4Runner repairs by problem area

Engine (24%)

Transmission and Drivetrain (14%)

Brakes and Traction Control (12%)

Suspension and Steering (15%)

Electrical and Air Conditioning (20%)

Paint, Rust, Leaks, Rattles, and Trim (8%)

Other (6%)

Chart based on 1401 repairs.
See TSBs and recalls for the Toyota 4Runner.

Toyota 4Runner engine repair cost distribution

$2500+ (4%)

$1000 - $2499 (13%)

$500 - $999 (19%)

$100 - $499 (30%)

< $100 (34%)

Worried about potential repair costs? An extended warranty can provide peace of mind.

Chart based on 311 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2017 Toyota 4Runner 4dr SUV

270-horsepower 4.0L V6 5-speed shiftable automatic 4WD, part-time w/low range

5000 mi

US $90
Changed the oil and filter since we drive a lot of stop and go 

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2015 Toyota 4Runner 4dr SUV

270-horsepower 4.0L V6 5-speed shiftable automatic 4WD w/low range

6000 mi Exhaust heat shield rattle at idle in drive fixed at dealer. 

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2014 Toyota 4Runner 4dr SUV

270-horsepower 4.0L V6 5-speed shiftable automatic 4WD w/low range

5000 mi oil leak 

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2013 Toyota 4Runner 4dr SUV

270-horsepower 4.0L V6 5-speed shiftable automatic 4WD, part-time w/low range

40000 mi

US $27
Exhaust system rattle - had the dealer remove an extraneous heat shield. Had this done in Canada on a camping trip. Confirmed by local dealer that this is common. 
32000 mi Ticking noise in the engin is very loud in our 2013, but our 2010 does not have it. The ticking is getting worse and louder especially in the cold. Dealer was not able to diagnose and said it "must be normal" 

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2012 Toyota 4Runner 4dr SUV

270-horsepower 4.0L V6 5-speed shiftable automatic 4WD w/low range

68000 mi Fuel Sending unit shorted out disabling the vehicle. The dealer replaced it under the extended warranty. The dealer didn't fix the 4Runner correctly. Left me stranded a few hours after picking it up. Traded it. 

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2010 Toyota 4Runner 4dr SUV

270-horsepower 4.0L V6 5-speed shiftable automatic RWD

14000 mi 4runner would downshift on a turn into 1st gear when it should have stayed in 2nd. 

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2010 Toyota 4Runner 4dr SUV

270-horsepower 4.0L V6 5-speed shiftable automatic 4WD, part-time w/low range

10000 mi Hard shift at low speeds. Active TSB was found and corrected. Shifts are much smoother now. 

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2010 Toyota 4Runner 4dr SUV

270-horsepower 4.0L V6 5-speed shiftable automatic 4WD w/low range

57040 mi

C $100
thermostat 
47300 mi Electronic throttle body failed and would not allow yhe vehicle to go over 1000 rpm. 
44000 mi Leak in oil systems gaskets. Replaced entire oil systems gaskets and o rings. Had to disassemble 4x4 system to replace parts. 
86000 mi

US $2
Car ran outta gas with still 1/4 tank left of fuel. Fuel pump wasn't working properly and was replaced. 

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2009 Toyota 4Runner 4dr SUV

236-horsepower 4.0L V6 5-speed automatic RWD

35200 mi

US $5
Oil seep/leak developed on right front near timing chain seal. Repaired under warranty. I included $5 for gas in cost to drive to/from dealer 

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2009 Toyota 4Runner 4dr SUV

236-horsepower 4.0L V6 5-speed automatic 4WD w/low range

91000 mi

US $33
Check engine light showed small EVAP leak. Replaced fuel cap and reset light. 

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2008 Toyota 4Runner 4dr SUV

260-horsepower 4.7L V8 5-speed automatic AWD w/low range

74300 mi

US $50
Engine light came on 1 week after dealer completed routine maintenance. Took it in, they told me the seal was worn out on the gas cap and wanted $150. Most of that was running the computer. car was certified used I only had to pay $50. 
38000 mi

US $3600
Clean varnish from heads and replace one valve. Dealer claims problem caused by "bad gas" and would not honor warranty. 
47000 mi Engine check light and several other error lights were on. Caused by the gas cap not sealing correctly. Toyota dealer tested the cap and sensors, replaced the cap and reset the error messages. 
58000 mi

US $26
engine check light and 2 others (VSC and slipping) flashing. Gas cap not sealing correctly. I had this problem last year when the gas cap was faulty and didn't lock and seal correctly. I replaced the gas cap and the error lights went away. 
77000 mi Gas cap not sealing properly. 3rd trip to the dealer for this issue. They pressure tested the system and replaced the gas cap (again). 
86100 mi Gas cap stopped locking and didn't seal. This is #4 gas cap for this truck. Dealer reported they installed a defective gas cap last year when the gas cap was replaced for the 3rd time. 
70600 mi

US $1100
Water pump failed and leaked coolant. Pump itself is only a couple hundred bucks but it is driven by timing belt which is labor intensive (timing belt replaced as well) 

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2008 Toyota 4Runner 4dr SUV

236-horsepower 4.0L V6 5-speed automatic 4WD w/low range

146000 mi

US $4000
Car stopped running in July. Over fueling, dumping too much fuel into catalytic converter, cause as yet to be determined, possible computer or timing chain issue. Through January mechanic has put over $3,000 into it, and will be buying it when done. 
84000 mi

US $30
reoccurring EVAP very small leak MIL, which also causes traction and stability control to shut off. Replaced fuel cap with aftermarket OEM replacement cap. 
125800 mi

US $1400
replaced leaking water pump 
105000 mi

US $2100
Had to replace both engine knock sensors after receiving error code P0327. Also replaced a leaking water pump and serpentine belt. 
100800 mi

US $1200
water pump, drive belt, radiator, recall 
116000 mi

US $100
brackets along muffler and frame broken 
128000 mi

US $60
A bracket that held part of the pipe running into muffler. It just broke.It was not rusted or anything . 
85000 mi

US $560
water pump was starting to leak. 
154000 mi

US $400
Replaced a leaking water pump and radiator. 

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2007 Toyota 4Runner 4dr SUV

260-horsepower 4.7L V8 5-speed automatic AWD w/low range

66400 mi

US $20
Faulty fuel cap. Set codes and MIL concerning evap emissions system. Second OEM fuel cap to fail since bought new. 
108000 mi

US $20
Faulty fuel cap. Set codes and MIL concerning evap emissions system. Third OEM fuel cap to fail since car bought new in 2007. 
97000 mi

US $100
Check engine light came on. Dealer did code check. ($65). Said it was the gas cap, they replaced it and reset the code. Around($100). 
129000 mi

US $667
Secondary air intake bank a and b stuck open 
113460 mi engine failure, car is still at shop, sensor and computer replacements unsuccessful. looking for a replacement engine, but hard to find nearby with reasonable mileage. 
113460 mi

C $1600
camshaft position sensor replaced, adjust timing belt and camshaft positions, problems caused by another shop new ECU installed 
111000 mi

US $200
One week after an upgrade to install enhanced braking software, the idiot lights for the brake related systems came on. The dealer installed a new purge valve and gas cap to resolve the problem. 
33000 mi OHV cam gear problem 
172000 mi

US $380
Belt tensioner broken. 
184000 mi

US $1100
Charcoal filter was replaced, but the 5 engine codes re-appeared 3 days after filter replacement. Next move will be to replace the fuel tank. 
93000 mi

C $2136
Water Pump replaced. 
112040 mi

C $1000
Catalytic converters need to be replaced. 
109280 mi

C $1000
Catalytic converters needed to be replaced. Installed an aftermarket exhaust and punched out the cats. Getting better gas mileage so I don't know what is worse for the environment. More gas or no cats. 
119040 mi Never repaired catalytic converter. 
57300 mi

US $430
Knocking noise at idle in mornings (1st start of the day). Turned out to be Fuel Pulsation Dampener, also Fuel Pump not holding pressure. Fuel pump covered by warranty. Also got the gas pedal recall done, and the TSB for sulfur smell, replaced catalytic converter. 
145700 mi

US $27
Check engine would illuminate. Tightening the gas cap would correct the problem for a little while. Replaced the gas cap. Suspected defective season on gas cap. Problem has not returned. 
153000 mi 2 of 3 Heat shield fasteners worn through above the muffler. Removed the fasteners (10mm nuts) and placed fender washers behind them. Replaced fasteners. Total cost - 45 minutes in the garage. :-) 
170000 mi

US $800
Mechanic also found tensioner and idler pulley were also highly worn and needed replaced. 
103000 mi

US $1800
Secondary air injection pump failure. 
53000 mi Leaky water pump - replaced. 
117000 mi

US $1900
Air injection pump and valves. 

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2007 Toyota 4Runner 4dr SUV

236-horsepower 4.0L V6 5-speed automatic RWD

100000 mi

US $150
Check engine, ABS, Traction, & stability lights on. Problem was worn gas cap which was replaced. 
47000 mi New gas cap for the CHECK ENGINE. 
70000 mi

US $20
Leaking gas cap 
154000 mi

US $163
Bad O2 Mass. Quoted $1500 to fix. Time to sell. 
70000 mi

US $300
warning lights 

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2007 Toyota 4Runner 4dr SUV

236-horsepower 4.0L V6 5-speed automatic 4WD w/low range

146320 mi

C $700
Rattling underneath: exhaust heat shield loose, Caused by rusted bolts 
178560 mi

C $700
oil seals 
67240 mi

C $1050
Changed radiator 
120000 mi

US $350
Replace leaking radiator Flush cooling system 
67000 mi

US $175
Oxygen sensor replaced. 
49500 mi

US $800
When I brought the truck in for a routine oil change, the tech noticed that the water pump was leaking. I'm out of warranty by time but it since I only had 49,000 miles, they tried to convince Toyota to warranty it. They didn't. 
65000 mi

US $200
Thermostat gasket was leaking, required removing the intake manifold (and replacing that gasket too). 
70000 mi

US $800
Leaking water pump 
34000 mi

US $90
Faulty gas cap seal tripped check engine light Ran diagnostic, replaced gas cap 
81000 mi

US $250
Radiator was leaking on drivers side, lower. Replaced with Denso, new hoses, t-stat, cap and new Toyota fluid. Pump had no leaks. 
130200 mi

C $500
crank seal leak, new gasket, oil leak from gasket led to replacement of idle tensioners on belt (shop did not inform me of problem, I noticed noise from failing tensioner after their initial work) 
56000 mi

US $130
Noticed dried coolant below water pump during routine inspection. Replaced water pump. Noticed hundreds black flecks in Toyota's "10-year/100k mi" factory filled coolant so flushed and refilled with Zerex Asian Vehicle coolant. 
17360 mi VSA light on, check engine light on, VSA off light on; because of the gas tank cap rubber seal need to be replaced. 
110980 mi Replaced water pump 

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2006 Toyota 4Runner 4dr SUV

260-horsepower 4.7L V8 5-speed automatic RWD

93000 mi

US $300
O-2 sensor 

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2006 Toyota 4Runner 4dr SUV

260-horsepower 4.7L V8 5-speed automatic AWD w/low range

89000 mi Waterpump / Timing belt replacement (90K Service) water pump had small leak. 
196400 mi

US $1500
EGR air pump and valve failure 
96700 mi

US $50
Replaced bad water inlet seal and thermostat. 
10000 mi Replaced catalytic converters due to sulfur smell. 
118000 mi

C $90
Loose/rusted heat shield above muffler 
142000 mi

US $100
Thermostat Stuck open. Flushed system and replaced Thermostat 
107300 mi

US $500
Replaced leaking crank seal. 
44020 mi Exaust maifold replace. Bought the vehicle used from the dealership and they said there was a small leak so they are replacing it so I do not know the cost. 
68200 mi

C $500
Right side exhaust manifold replaced. Found out that the left side was also replace prior to me purchasing the vehicle. 
154100 mi

US $500
cracked radiator. replaced with aftermarket. 

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2006 Toyota 4Runner 4dr SUV

236-horsepower 4.0L V6 5-speed automatic RWD

190000 mi

US $850
Replace oxygen sensor and reset check engine light. Repaired exhaust system leak, welded in short section of connecting pipe 
94000 mi

US $832
oil leak, valve gasket and oil pan gasket replaced 
149000 mi

US $1500
DTC codes saying heated O2 sensor, actually two bad Cats. Cats and headers are 1 piece. Previous repair to Cats and welds from different metals, Possible air leak into exhaust flow damaged Cat's. Bought a set of Flowmater Cats installed as replacement. Should have done this repair earlier. Engine runs like new. 

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2006 Toyota 4Runner 4dr SUV

236-horsepower 4.0L V6 5-speed automatic 4WD w/low range

81000 mi

US $40
Exhaust tip rusted off muffler. 
91000 mi Upon doing 100k mile service it was noted there was small leak in the radiator when filled FULL. If kept a little under full there was no issue. 
141300 mi

US $150
O2 sensor fault- sensor 1 bank 1 
143000 mi

US $440
Upstream o2 sensor- different than the one previously replaced, but on same side 
62200 mi

US $680
Bolt to fasten heat shield between muffler and underbody of car rusted. Heat shield fell onto muffler. Needed to be removed by dealer. 
143000 mi Transmission cooler line ft under radiator, Radiator, Transmission fluid. Heat shield above muffler, Exhaust gasket all had to be replaced 
158000 mi

US $1700
Head gasket, exhaust manifold 
125000 mi

US $186
Cooling system Radiator leaking at tank seam. Replace radiator and coolant. 
150600 mi

US $500
Leaking gasket. 
137000 mi Muffler failed days after taking delivery of used vehicle. Implied 30 day warranty for state of Massachusetts on sale of used vehicle. 
148000 mi

US $300
Oxygen sensor replaced 
150700 mi

US $80
Heat shield for catalytic converter finally rusted off and fell into the drive shaft cavity, causing a horrible scraping sound. 
17000 mi Check engine and all brake lights came on. The problem was the carbon canister which was replaced. 
141000 mi

US $300
Replaced exhaust 
101000 mi

US $460
Radiator Replaced 
104160 mi

C $200
The shields over the catalytic converter needed replacing. 

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2005 Toyota 4Runner 4dr SUV

270-horsepower 4.7L V8 5-speed automatic AWD w/low range

121000 mi

US $90
CEL, VSC, VDC lights on. New gas cap required. 
130000 mi

US $1599
Exhaust pipe from manifold rotted through. 
112000 mi

US $1700
Water Pump, coolant flush, belts(timing, alternator)and pulleys, spark plugs etc.  
109000 mi

US $1569
Secondary Air Injection Pump and related valve assembly. Symptom: Howling sound at startup. Endemic problem with 4.7 engine. Toyota extended the warranty for this on the Lexus GX 470 & Tundra 4.7 but has done nothing for 4Runner V8 owners. 
110700 mi ABS, Stability & Check Engine light on. ABS and stability control disabled. Checked codes & showed "evaporative". Fixed by replacing old gas cap with new and clearing codes. 
83000 mi Very noticeable ticking sound when engine cold, can be heard very easily outside truck or from inside with windows down when taking off from a stop. I believe it's the dreaded Toyota V8 cracked exhaust manifold problem on the passenger side. 
167000 mi

US $300
Injection system 
144000 mi

US $430
Both emission control valves (heads) were stuck closed and had to be replaced. The third emission control valve had to be replaced. 
129000 mi

US $550
cracked exhaust manifolds finally replaced. 
142500 mi Replaced radiator, found to be leaking when I took the car in to see if it qualified for the dash repair. Parts for both ordered on one trip, replaced on a second. 

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2005 Toyota 4Runner 4dr SUV

245-horsepower 4.0L V6 5-speed automatic RWD

223800 mi

US $8
Head gasket leak into #6 cylinder. I fixed it with GM stop leak tablets. It hasn't leaked since putting in the tablets. 
72800 mi 4runner took 4-5 full seconds to start when weather was cooler. This is the 3rd time it's been in for this but they always claimed it was normal. They replaced the entire fuel pump after noticing a fuel pressure drop as the car sat parked. 
124000 mi

US $50
emissions related lights issue 

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2005 Toyota 4Runner 4dr SUV

245-horsepower 4.0L V6 5-speed automatic 4WD w/low range

113000 mi

US $4500
Head gasket went out and engine was severely over-heated while under previous owner. I replaced with a used engine, new radiator, and new water pump. 
130000 mi

US $120
Replaced downstream O2 sensors. Check engine light with code P0430 had occured 3 times in 3 months. 
131000 mi

US $650
Replaced rear catalytic convertes (left and right), muffler, resonator, exhaust pipe, and all gaskets, hardware, and hangers. Original components had rusted out resulting in leaks and P0430 code with check engine light. 
106000 mi Fuel filler cap failed and no longer would remain firmly seated, resulting in activation of "check engine" lights, and warning lights indication deactivation of stability and traction control systems. 
113600 mi

US $700
Muffler and tail pipe replaced 
126000 mi

US $3500
Blown head gasket, replaced head gasket and re-machined the left and right head. 
214000 mi

US $190
Radiator with small leak. Easily replaced 
84000 mi

US $200
Check Engine Light - timing adjustment. Still a problem. 
88000 mi

US $800
Check Engine Light, which equals no Inspection Sticker. Fuel control Solenoid. Cleaning done, then replacement guidelines from Shop manual followed. Still not fixed. No known solution. 
97000 mi

US $3000
Was showing P022 bank 2 error code. Turned out to be a bad casting from the factory. Engine should never have been assembled with the casting defect. Dealer - Prime Motors Boston - screwed me and previous owner. Never reporting a problem, that existed for 13 years. Replaced with a used head. 
100000 mi

US $410
Check engine light. I bought code reader and code was for oxygen sensor. Dealer came to same conclusion independently and replaced the sensor. No more problems. 
119200 mi

US $700
Replaced O2 Sensor Changed Spark Plugs 
130000 mi

US $3300
Leaking head gasket 
141000 mi

US $1300
oxygen sensors replaced with original parts front and back all 4 of them In addition joints of cat converter were rusted and emitting exhaust onto the o2 sensors- required new weld joints 
149000 mi

US $1500
radiator has started rusting at the bottom-replace serpentine belt beginning to squeal-replace 
149000 mi

US $480
muffler and tail pipe replacement 
155500 mi

US $900
muffler gone bad 
166000 mi

US $24
drop in 50% engine performance on pedal acceleration- 5 sec delay reaction. 10oz of lucas upper cylinder treatment on next gas tank fill - problem went away engines with over 100k milleage has worn piston rings which create friction - lucas fuel treatment addresses this 
174020 mi

US $228
p0306 diagnostic code - car shakes for 5 secs when started but ok after that/ can hear liquid moving on start / very poor fuel efficiency/ low coolant level but no visible leak or white smoke on tail pipe/ no smell of anifreeze in cabin/ mechanic replace foul plug on cylinder 6 and replaced coil at cylinder 6 - $220.00 - on replace coil and foul plug cylinder 6 , p0306 warning lights returned - added two Genuine GM Flui Cooling System Seal Tablets into radiator p0306 warning lights disappeared again as recommended by someone from this forum - cost $8, this slowed the leak - it a a total of 5 GM tablets to stop the leak on the car - i will leaving the tablets in till the next coolant flush 
174050 mi

US $27
persisted coolant loss after adding gm coolant tablets which slowed down coolant loss. replaced old with new radiator cap 27$ 
176000 mi

US $10
heat-shield bolts underneath driver side rusted thru causing rattle -purchased stainless zip ties to hold the heat-shield in place 
180000 mi

US $200
exhaust leaks on gaskets between the catalytic converters causing excessive noise and poor gas mileage old gaskets replaced with new gaskets 
200880 mi ignition coils malfunctioning 
201580 mi

C $2000
Turned out it was not the coils at all. Took it to a different Toyota dealer. It was a leaky head gasket. Now replaced and running fine so far. 
203360 mi

C $2000
head gasket replacement 

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2004 Toyota 4Runner 4dr SUV

245-horsepower 4.0L V6 4-speed automatic RWD

153500 mi

US $550
Water pump was leaking. Replaced and get new thermostat as well. 
96000 mi

US $100
Squeaking noise, changed accessory belt tensioner and idler pulley. 
126000 mi

US $2500
DTC P0306 - found a leak on the Cylinder head gasket on #6 area/side. 
49000 mi

US $529
water pump replacement 

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2004 Toyota 4Runner 4dr SUV

245-horsepower 4.0L V6 4-speed automatic 4WD w/low range

133000 mi

US $2655
Head gasket failed, which caused cylinder #6 to misfire due to coolant leaking into combustion chamber. 
82000 mi

US $1000
Water pump was leaking slightly - enough so I could smell coolant when parking, and the coolant level would drop a few ounces over the course of a month or so. The water pump was replaced along with thermostat and some hoses and fittings. 
118000 mi

US $2500
Failed head gasket at cylinder 6. 
166 mi

US $138
Thermostat replaced 
155500 mi

US $200
Replaced leaking radiator. Protectively replaced your/lower hoses and thermostat. 
143000 mi

C $475
oxygen sensor replaced 
152180 mi

C $501
replaced muffler and maintenance oil antifreeze etc 
159960 mi

C $226
replaced engine oil pressure sensor and liquids 
157000 mi

US $100
Exhaust shroud cracked, re-welded 
127000 mi

US $616
Radiator Leak. Replaced. 
210000 mi

US $130
Driver's side O2 sensor replaced. 
212000 mi

US $50
#3 ignition coil failed, replaced in less than 10 minutes, part cost $50. 
213000 mi

US $130
Muffler pipe broke off. Replaced with AM part in less than an hour. 
215000 mi

US $200
While looking for AC leak, noticed seepage at the radiator - replaced both AC condenser and radiator at the same time. 
63000 mi Replace 2 o2 sensors 
66000 mi Replaced timing chain tensioner that was broken in pieces. Pieces of tensioner fell into timing chain cover. 
82000 mi

US $85
Transmission cooler lines rusted through 
84000 mi

US $40
Replaced Idler Pulley with NAPA version $40. Toyota version was $140 
66700 mi

US $250
Water pump was replaced. That vehicle was sitting without being driven regularly fro a long time, that caused the water pump leak. 
118000 mi

US $750
120K Tune up, trani fluid replaced, NEEDED NEW RADIATOR!!! 
74000 mi

US $84
In Virginia heard strange vibration sound when letting off the gas at highway speeds, thought maybe flat tire, but no. Mechanic in Potomac Md. looked over and tail pipe had separated from muffler, thus backpressure was causing problem. Fixed in NH. 

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2004 Toyota 4Runner 4dr SUV

235-horsepower 4.7L V8 5-speed automatic RWD

86700 mi

US $1500
Timing Belt replaced. Water pump replaced as well. Radiator also found to have leak. 
138000 mi Developed oil leak from oil pan. Probably gasket. Repair not done at this time. 

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2004 Toyota 4Runner 4dr SUV

235-horsepower 4.7L V8 5-speed automatic AWD w/low range

161200 mi oxygen sensor 
178560 mi

C $2400
a new radiator (small leak). 
182060 mi

C $150
Oxygen sensor 
164600 mi

US $25
Welded loose heat shield. 
84320 mi

C $60
Repaired and re-attached heat shield that had gotten loose.  
127900 mi

US $26
Check engine light came on. Code P0442 (small pressure leak) replaced gas cap reset engine light. 
89000 mi

US $5
Gasket between passenger side cat and exhaust worn. Gave CEL with #2 O2 sensor error. 
90300 mi

US $866
Catalytic converter on bank 2 went out. CEL giving P0420 code. $600 for parts and $266.00 for labor. Fixed. 
162000 mi

US $60
Check Engine Code: O2 sensor, bank 1 sensor 1 R&R; cleared code. 
195000 mi

US $975
New radiator 
84000 mi

US $600
Spark Plugs 
85000 mi

US $250
Leaking Water Pump, Timing Belt 
95000 mi

US $700
Throttle case cleaned 
76260 mi

C $230
Check engine light came on - dealer checked codes and reset after concluding no problem Check engine on again - dealer took vehicle for the day and identified leaking gasket on exhaust. Gasket replaced and CEL reset. Problem resolved 
84963 mi Service tech pierced radiator when replacing timing belt and water pump. Towed to dealership and radiator replaced at their expense. 
94860 mi

C $780
Noise from under vehicle. Parts showed exhaust had sheared at entry point to baffle box. Could not be welded - was not corroded - part just broke at what is a weak point. Related exhaust parts replaced. Dealer gave 15% discount  
235000 mi O2 sensor failure; check engine light Head gasket failure; leaking oil 
74000 mi Heatshield over muffler rusted and broke off where it bolts on. This caused a very loud noise as the shield was rubbing the driveshaft. I used bailing wire to hold it in place until I can get the truck up on a lift for a proper repair 
85000 mi

US $60
Oxygen sensor in front of cat on passanger side failed. Replaced with part from Amazon (cheapest found). Highly recommend 7/8" O2 sensor socket. Old O2 sensor caused Check Engine Light + VSC TRAC + VSC off lights 
93300 mi

US $80
Previously installed Denso O2 sensor from amazon failed in same fashion (heater element) 
288920 mi

C $799
Crack in radiator where the upper hose attaches. Replaced radiator and upper hose. The lower hose was reused. 

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2003 Toyota 4Runner 4dr SUV

245-horsepower 4.0L V6 4-speed automatic RWD

233000 mi

US $12000
idler bearings, water pump, radiator 

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2003 Toyota 4Runner 4dr SUV

245-horsepower 4.0L V6 4-speed automatic 4WD w/low range

272000 mi

US $400
Head gasket replacement 
138260 mi

C $400
center exhaust section replaced.(muffler) 
109120 mi rear oxygen sensor malfunction; will live with check engine light for a bit 
121000 mi Bad O2 sensor 
130000 mi

US $1500
Had to replace two front catalytic converters. 
159340 mi

C $50
Visual check of Serpentine belt discovered minor crack, which caused squeaking sound when first started the car, replaced the serpentine belt by myself, took 20 minutes 
60000 mi

US $45
rear oxygen sensor, this is first repair ever for this vehicle 
84500 mi

US $600
Pulleys needed to be replaced because there was a lot of noise when engine runs 
95000 mi Right side Catalytic Converter abd Exhaust failure 

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2003 Toyota 4Runner 4dr SUV

235-horsepower 4.7L V8 5-speed automatic RWD

170000 mi

US $80
Bank 1 upstream o2 sensor went out. 
175000 mi Tensioner Pully 

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2003 Toyota 4Runner 4dr SUV

235-horsepower 4.7L V8 5-speed automatic AWD w/low range

214000 mi

US $1500
Piston ring seized and scored cylinder wall. 
178000 mi

US $303
2 oxygen sensors replaced. 
153000 mi

C $400
water pump leak + timing belt 

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2002 Toyota 4Runner

Engine not specified

150000 mi Noticed a large pool of fluid in driveway. Turns out Radiator was blown. And transmission fluid was contaminated. I had my 02 Runner towed, radiator replaced, and trans flushed twice! Luckily no trans damage..drives great now.  

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2002 Toyota 4Runner 4dr SUV

183-horsepower 3.4L V6 4-speed automatic RWD

205300 mi

US $300
Key cylinder got replacement 
179000 mi

US $300
CEL code P0171. Warm start issues and long term fuel trim reading very high. Fuel pump changed 
184000 mi

US $300
CEL code P0440, P0446. Replaced carbon canister, code still present 
206000 mi

US $700
Misfire cylinder 3 - diagnosed as bad cable - all cables replaced + new spark plugs as they were ~80K old Oil leak from valve covers - gaskets replaced 
219000 mi

US $600
Proactively replaced timing belt (previous one had done ~130K), water pump and auxiliary belts 
195000 mi

US $300
replaced intake gaskets and valve cover gaskets. 
198000 mi Replaced rear cam seals due to leak both sides. 
165200 mi

US $395
Valve covers leaking. Replaced gaskets and sealed up. No more leaks. 
171000 mi

US $230
Drive belts were worn and needed to be replaced 

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2002 Toyota 4Runner 4dr SUV

183-horsepower 3.4L V6 4-speed automatic 4WD w/low range

143000 mi

US $850
Timing belt, water pump 
274000 mi

US $500
Leaky valve cover gaskets (rear) 
103000 mi

US $250
check engine light on. Replaced sensor, air filter, reset computer 
110000 mi

US $400
check engine light was on, shop made adjustments (running rich) and reset the warning light. 
110000 mi

US $250
check engine light back on after less than 100 miles. Repair shop changed mass air flow sensor and reset computer. 
181700 mi

US $50
check engine light - o2 sensor. Order a replacement online, will replace myself. 
190000 mi

US $1500
Also replaced cat back exhaust due to rust. 
234000 mi

US $25
Check engine light. Ran code and found catalytic converter was the problem. Used a fuel treatment and code cleared itself, for now. 

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2001 Toyota 4Runner 4dr SUV

183-horsepower 3.4L V6 4-speed automatic RWD

118000 mi

US $100
Oil leaks around both valve covers. Loose valve cover bolts. Replaced all valve cover gaskets, spark plug seals, half-moons/semi-cicrular plugs, camshaft plugs, PCV valve, and PCV valve grommet. 
237000 mi

US $1200
rebuilt engine 
202000 mi

US $95
P0446 code for check engine light- replaced vapor canister with used one. Will see if check-engine light returns. 
170000 mi

US $1400
Cracked valve cap leaking oil Replaced O2 sensor 

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2001 Toyota 4Runner 4dr SUV

183-horsepower 3.4L V6 4-speed automatic 4WD w/low range

162000 mi Gasket replaced 
190000 mi

US $10
Car began to shake sometimes when accelerating on highway. I bought couple cans of Seafoam and cleaned the throttle body per the instruction. Now the problem is 99% fixed. Occasionally, the engine still vibrates a little when I try to accelerate when car is already running around 60-70 mph. 
165000 mi

US $450
Engine cooling system (radiator, water pump, thermostat, heater core, etc.), repair 
121340 mi

C $100
A sensor was cleaned and engine check light reset 
266000 mi

US $300
O2 sensor replaced. MAF sensor replaced. p0440, replaced both cats 
280000 mi

US $1400
Sparkplug gasket leak. Replace gaskets and valve cover gaskets 
111000 mi

US $450
Had a small oil leak fixed. The cause was the valve cover gaskets. 
211000 mi

US $80
Replaced cracked radiator 
110000 mi

US $617
engine rear main seal replaced 
161200 mi Back hatch WOULD NOT OPEN. Took off panel, moved lever -- saw the cable holder had come loose from its bracket. Fixed. For dessert, three dash lights were ON, but supposed to be OFF; removed ground from battery, waited one hour. Fixed! 

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2000 Toyota 4Runner

Engine not specified

225000 mi

US $400
Mass air sensor was replaced in order to pass state inspection 
224000 mi

US $300
Spark plug flew out. 
147000 mi

US $90
Tensioner pulley was squeaking. 

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2000 Toyota 4Runner 4dr SUV

183-horsepower 3.4L V6 5-speed manual 4WD, part-time w/low range

134000 mi Symptom: poor idle, gradual loss of power. Air intake was plugged with grime past the air filter. I understand this happens on 2000 4Runner. 
220300 mi clutch worn out completely - flywheel cracked, probably due to excess heat from driving on a slipping clutch. 
186000 mi

US $700
Ticking was coming from engine. Accessory belt bearing was replaced and spark plugs. Ticking was not resolved. 
147000 mi

US $60
Got a P0420 CEL. Problem was the second O2 sensor which I replaced and that solved the problem 
154000 mi

US $140
Oil cooler gasket was leaking oil. It was replaced and oil leak problem was fixed. 

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2000 Toyota 4Runner 4dr SUV

183-horsepower 3.4L V6 4-speed automatic RWD

185000 mi

US $980
water pump, and while they were replacing the water pump put in new timing belt. 
94000 mi The "check engine" light was on and the mechanic told me that the Oxygen sensor needed to be replaced. 

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2000 Toyota 4Runner 4dr SUV

183-horsepower 3.4L V6 4-speed automatic 4WD, part-time w/low range

190000 mi

US $550
Rear catalytic converter and oxygen sensor replaced. They were original. California emissions vehicle. 
128500 mi

US $20
While checking the antifreeze quality (cold rating), radiator cap broke into pieces. Internal part of radiator cap corroded through allowing the pressure relief portion to fall into the radiator tank. Replaced radiator cap with new one. 
120000 mi

US $600
Radiator broke internally. Coolant mixed with transmission fluid. Radiator replaced. Coolant had to be totally flushed. Transmission had to be completely flushed and filled. 
171000 mi Check engine light on. $1,700 to fix. Too expensive. 
176000 mi

US $1016
Check engine light came on, poor gas mileage, engine not as powerful. Drove for about a year like that and then took to garage to replace knock sensors when it was in for an oil change. Total price with oil change was 1051.51 
138500 mi "Check engine" light sensor. It's come on a couple times in the last 2 years but nothing is ever wrong. 
150000 mi

US $600
Replaced catalytic converter. 
237500 mi

US $500
Valve cover gaskets leaking. 
108000 mi

US $50
Replaced rear oxygen sensor due to check engine light with code p0420. 
189000 mi

US $300
Water pump leaking at shaft. Replaced water pump, thermostat, hoses. Also replaced timing belt, two idler pulleys and hydraulic tensioner. Timing belt had never been replaced before. Old belt, pulleys & tensioner were ok - PM only. 
192000 mi

US $100
Valve covers leaking oil. Replaced valve cover gaskets, washer seals. While in there, replaced PCV valve and throttle coolant hoses which had no apparent issues - PM only. 
196500 mi

US $300
Replaced muffler. 
204000 mi Check Engine Light for P0171 - lean air/fuel mixture. Cleaned Mass Air Flow Sensor and replaced air filter which resolved problem. 
226300 mi

US $96
Occasional multiple cylinder misfire (P0300)during damp conditions. Installed new spark plugs and wires and new coil boots which corrected problem. Plug replacement 30,000 mile overdue. 

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2000 Toyota 4Runner 4dr SUV

183-horsepower 3.4L V6 4-speed automatic 4WD w/low range

172000 mi

US $750
Replaced a fuel injector. Replaced the valve cover seal. 
80000 mi O2 sensors 
102000 mi No heat. Read brand/model forum and learned about fix. WD40 and manual manipulation freed stuck valve, allowing coolant to flow into heater core. 
102500 mi

US $200
Purchased car with new OEM Radiator. Needed to be replaced again. Aftermarket racing model installed, brand recommended by 4Runner Forum. 
140000 mi

US $300
Changed out spark plug wires.  

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1999 Toyota 4Runner

Engine not specified

232500 mi

US $300
Replaced muffler. It had a hole in it. 
253000 mi

US $300
Replaced rear main seal 
185000 mi

US $3200
two cracked head gaskets, but car never overheated. First i was told it was going to cost 4500 to fix, I told them I was going to take the car eslewhere for a second opinion, when I show up all of a sudden they could fix for 3200. BS 
155300 mi radiator tank cracked. replaced radiator, upper and lower hose 
158700 mi

US $1000
radiator, spark plugs, wires, 
159000 mi

US $150
One day after replacing the fuel filter, #2 fuel injector failed. I ordered 3 reman injectors $40 ea. plenum gaskets and few extra parts. Spent Saturday repairing the engine. Gave me the chance to replace the leaking valve cover gaskets. 
166000 mi

US $100
The truck started to take longer to fire-up and worse when the engine had been run and still warm, like running in to the store. As suspected, it was a failing fuel pump. Installed a new Denso fuel pump and it runs like a champ now. 
226500 mi

US $600
Radiator died but wife stopped car right away so engine & head gasket survived. Replaced radiator, water pump, timing belt, all accessory belts. 
145000 mi

US $600
replaced spark plug wires and cleaned fuel injection system 
186080 mi

C $200
Rad transmission line pulled out Catalytic converter failed e test 

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1999 Toyota 4Runner 4-door

6-cylinder manual AWD

58280 mi

C $1050
Water pump leaking, replaced concurrently with timing belt (first timing belt replacement) 
67440 mi

C $600
Engine light, indicated fuel filter; replaced fuel filter (first time for vehicle) and all associated wiring. 
71800 mi

C $500
Engine warning light on, indicated issue with air fuel mix, replaced fuel and air filters. Light went off, but has come back on. Ignoring for now. 
73160 mi

C $1000
Engine light check, replaced exhaust system and o2 sensor. First exhaust (muffler) replacement since 1999 purchase. 
73360 mi

C $250
Engine light came on; replaced thermostat. 

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1999 Toyota 4Runner 4-door

6-cylinder manual 4WD

221700 mi

US $225
Plug wires bad, had been replaced with poor quality wires one year ago. Vehicle had to be towed. 
268000 mi

US $250
Cooling system repair, tubes to rear seat heater had rusted and leaked causing vehicle to overheat. Mechanic disconnected heat tubes and left removed from system 

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1999 Toyota 4Runner 4-door

6-cylinder automatic 4WD

155500 mi

US $95
Check engine Light - could be the catalytic converter. 
158600 mi

US $1500
Check Engine Light and Catalytic Converter 
206000 mi

US $50
Replaced fuel filter and oxygen sensor 
194000 mi

US $4500
New radiator. 
198000 mi

US $400
Spark plug loosened. Exhaust gases melted coil. 
155000 mi

US $50
gasket between catalytic converter and exhaust pipe blown out. Replaced gasket. 
158000 mi Dealer says entire exhaust system and 2 catlytic converters are bad. Replacement estimate is $2,700!!! 
173000 mi

US $300
Check engine light due to faulty oxygen sensor which was replaced 
174000 mi

US $1800
Catalytic converters failed and need replacing. Will sell instead. 
175000 mi Catalytic converters failed and needed replacing. 

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1999 Toyota 4Runner 4-door

6-cylinder automatic 2WD

199000 mi

US $1900
Water pump replaced w/seals. 
200000 mi

US $500
IVC (idle control valve) replaced. Car stopped, would start but would not idle so you could shift into gear. 
205000 mi

US $100
Engine mounts worn and need to be replaced. Cost estimated at $1200.00. 
250000 mi

US $700
radiator leaking, replaced 
270000 mi ignition coil needs replacement 
581000 mi

US $1450
Engine would not start, had 4 Runner towed to Toyota dealer. Diagnostic run and fuel pump failed. Replaced fuel pump and filter. 4-Runner runs like new. Always said if there is a problem with vehicle best to take it to the dealer for r-and-r. 
605000 mi

US $1400
During routine maintenence found waterpump leaking, cam & crankshaft seals leaking replaced along with timing belt & accessory belts. Replaced spark plugs & wires. Changed oil & filter. 
631800 mi

US $1100
Replaced rear oil seal on engine.  
212000 mi

US $50
Bad fuel injector 

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1998 Toyota 4Runner

Engine not specified

196000 mi

US $675
Crap muffler installed by Meineke crapped out after 20K miles. Had brand new one installed and the 4Runner sounds brand new. 

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1998 Toyota 4Runner 4-door

6-cylinder manual 4WD

172980 mi

C $700
Muffler replacement due to a leak 
138200 mi

US $100
replace spark plugs and wires 
159000 mi Rear main seal started leaking again, was 11 months after shop had originally replaced seal, luckily they warrantied their work as they had not seated seal properly during original install. 

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1998 Toyota 4Runner 4-door

6-cylinder automatic 4WD

163000 mi

US $50
Fuel injector #3 was replaced. 
243800 mi

US $247
Engine missing, replaced spark plugs. 
101200 mi

US $200
Original rubber drive belts replaced because of cracking. 
268300 mi

US $60
Throttle position sensor replacement 
288000 mi

US $33
Throttle position sensor needed replacing 
258250 mi

US $180
Replaced radiator and thermostat 
200940 mi

C $960
Bad fuel pump Timing belt and water pump 

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1998 Toyota 4Runner 4-door

4-cylinder automatic 4WD

210000 mi

US $745
Replaced catalytic converter 
226000 mi

US $150
Water pump bearings failed; replaced pump and belt. While I was messing with it, also replaced fuel filter. 

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1997 Toyota 4Runner

Engine not specified

213000 mi

US $150
Valve cover gaskets replaced 
173000 mi

US $250
Replaced fuel injectors 
138000 mi

US $50
replacement of the valve cover gaskets 
293000 mi

US $400
replaced radiator- it was leaking. 

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1997 Toyota 4Runner 4-door

6-cylinder manual 4WD

152820 mi

C $800
Cracked muffler, entire exhaust system replaced. 
150000 mi

US $200
poor Acelaration. Cleaned MAF sensor 

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1997 Toyota 4Runner 4-door

6-cylinder automatic 4WD

116000 mi

US $250
Check engine light. Complete diag. & smoke test of vac. system. Found no leaks. Cleaned throttle body & MAF sensor. Running better & no light after 30 days. 
117000 mi

US $100
Exhaust rusted off. Replacement from Salvage Yard. 
210000 mi Replaced Valve Cover Gaskets 
160200 mi

US $100
Check engine light came on. Replaced front Oxygen sensor. Reset computer. Check engine light stayed off. 
152500 mi

US $800
Noticed water pump weeping. Water pump replaced along with timing belt and associated bearings. 

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1997 Toyota 4Runner 4-door

6-cylinder automatic 2WD

180000 mi

US $100
cracked muffler 

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1996 Toyota 4Runner

Engine not specified

145000 mi

US $250
Frequent overheating. Radiator was clogged. Radiator replaced and cooling system flushed. 

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1995 Toyota 4Runner 4-door

6-cylinder manual AWD

115000 mi

US $2000
head gasket 

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See TrueDelta's information for all Toyota models.

Toyota 4Runner Engine Problems

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