| 1 | 0 | 3 | 4 | 3 | 4 |
2004 Infiniti FX repairs by problem area
Engine (31%)
Transmission and Drivetrain (3%)
Brakes and Traction Control (6%)
Suspension and Steering (19%)
Electrical and Air Conditioning (25%)
Paint, Rust, Leaks, Rattles, and Trim (6%)
Other (10%)
Chart based on 155 repairs.
2004 Infiniti FX engine repair cost distribution
$2500+ (0%)
$1000 - $2499 (13%)
$500 - $999 (18%)
$100 - $499 (38%)
< $100 (31%)
Chart based on 45 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2004 Infiniti FX 4dr SUV
315-horsepower 4.5L V8 5-speed shiftable automatic AWD
| 121000 mi US $550 |
Leaking valve covers |
| 81060 mi | Idle RPM @ 800 |
2004 Infiniti FX 4dr SUV
280-horsepower 3.5L V6 5-speed shiftable automatic RWD
| 90800 mi | Lower radiator hose replacement, coolant, flush and cleaning; new radiator cap |
| 103000 mi US $20 |
Dirty throttle body |
| 113400 mi US $550 |
Radiator cracked and needed to be replaced. |
| 112000 mi | Throttle body was dirty and caused car to idle rough and brought up a check engine light. Removed throttle body and intake plenum and cleaned thoroughly with carburetor cleaner. Idle has smoothed out and CEL went away after a few days. |
| 115100 mi | Replacement radiator developed a pinhole leak and dumped all of the coolant. |
| 118000 mi | Cam shaft and crank sensors replaced. Engine would stall randomly. |
| 88000 mi | Although the car was well maintained, the engine is blown with 88,000 miles |
| 198000 mi US $860 |
Had a couple of misfires and valve cover leak. When replacing valve cover gaskets, plugs, pcv and coils x6 found oil in one tube in each valve cover. Replaced valve covers also. |
2004 Infiniti FX 4dr SUV
280-horsepower 3.5L V6 5-speed shiftable automatic AWD
| 277000 mi US $1098 |
engine not cranking, transmission indicator blank, reverse lights do not come on. |
| 143000 mi US $100 |
oxygen sensor |
| 153000 mi US $125 |
Belts and pulleys |
| 90000 mi US $1200 |
Replaced leaky valve covers (2) |
| 95000 mi US $120 |
Oil leak - replaced oil pressure hose |
| 221000 mi US $85 |
SEL light was on after engine backfired. Code indicated 2nd O2 sensor issue. shop added Cataclean, told me to run for a week. Light was reset and has been off since |
| 221000 mi US $350 |
muffler was rusting out and had a leak. Repalced muffler and tail pipes |
| 251000 mi US $1000 |
Replaced full exhaust from converter back |
| 256000 mi US $1600 |
Had to replace valve cover gasket, manifolds and coils |
| 114720 mi C $205 |
Connection between muffler and Mid-Pipe in exhaust rusted through and needed replacement. |
| 110980 mi C $60 |
Belts were squealing badly. Replaced belts, did not resolve. Removed tensioner, found crack washer preventing proper rotation, removed washer and replaced. Problem resolved. |
| 115400 mi C $100 |
Oil cooler behind oil filter leaked from hose connection. Connection needed new, tighter hose clamps. Included oil change with repair. |
| 117380 mi C $10 |
Oil cooler was leaking behind oil filter. Replaced faulty (incorrectly installed by previous owner) crush washer. Leak resolved. |
| 57000 mi US $2000 |
Leaking valve covers needed replacing (included spark plugs, several gaskets and two "cover assy - valve roc" which were $254 and $243). |
| 64300 mi US $1208 |
Replaced heated oxygen sensor. Also had power steering flushed, fuel injectors serviced, leaky dipstick replaced, brakes flushed, air filter replaced, routine oil change. Engine grounds cleaned, and redundant ground installed. |
| 65000 mi US $647 |
Service Engine light ->Rear oxygen sensor not working. Took a while to track down, then replaced rear heated oxygen sensor, shop expenses and tax->total $646.90. |
| 79000 mi US $759 |
Check engine light was on. Engine grounds cleaned, 5 grounding bolts replaced. |
| 80000 mi US $327 |
Serpentine belts replaced. |
| 92200 mi US $130 |
Replaced leaky oil seal gasket. |
| 152600 mi US $300 |
Throttle body has required replacement. Also, automatic door locks do not work on 3 doors. |
| 95000 mi US $275 |
Engine occasionally had trouble starting. Check engine light came on. Had left bank cylinder module replaced at dealer. |
| 97000 mi US $700 |
Muffler y-pipe rusty, and there was a small hole in the muffler. Y pipe was sautered and hole was patched. This worked well. To replace the entire exhaust system would cost almost 1300 dollars, and I wasn't willing to do that repair. |
| 70000 mi | Car was burning excessive ammounts of oil, more than a quart every 1000 miles. |
| 68000 mi US $533 |
I needed a new muffler. There was a crack going all the way around the flange. |
| 107000 mi US $300 |
Cracked Radiator |
| 65100 mi | Rattle on cold start - traced to cracked / loose heat shields on catalytic converters. |
| 80600 mi | heat shields on catalytic converters rusted, loose and vibrating, creating noise on cold start |
| 50000 mi | Service Engine Soon light came on. Emission system leak captured by computer. Dealer could not replicate or find a leak, but all fittings/sensors checked/tightened and warning light reset @ no charge. No recurrence since. |
| 71000 mi US $309 |
Hydraulic rear differential support bushing leaking. Replaced rear cross member to resolve. |
| 82000 mi US $158 |
Oil cooler seal leaking-discovered during routine maintenance service. Slight leak. Not noticed in prior oil change service, so assumed the leak developed between 78K and 82K miles. Oil cooler O-ring seal replaced. Problem solved. |
| 87700 mi US $100 |
Mechanic working on other problem observed that the hydraulic motor mounts were leaking hydraulic fluid. Mounts were replaced under extended warranty. |
| 88700 mi US $520 |
Accelerator position sensor suddenly quit working and had to be replaced. Dealer had to keep vehicle overnight until part could be delivered via overnight service. |
| 92300 mi US $200 |
Radiator shroud cracked & loosened; dislodging cold air intake tube. CAI tube rubbed against AC compressor, making noise. Shroud & entire fan/motor assembly replaced under extended warranty. |
| 134000 mi | Car was hard to start in the morning. Cleaned throttle body and the car started as usual. It is important to have the ECU relearn the idle otherwise the Check Engine Light will come on. Procedure can be found here http://forums.nicoclub.com/help-relear |
| 136000 mi US $125 |
After cleaning the throttle body, I was not able to make the ECU "relearn" the idle. Had to take it to a mechanic who used Infiniti computer to reset the idle speed. |
| 182000 mi US $50 |
Low on oil |
| 53200 mi US $100 |
Exhaust leak. |
See TrueDelta's information for all Infiniti models.
