| 1 | 0 | 3 | 4 | 3 | 4 |
2003 Infiniti FX repairs by problem area
Engine (34%)
Transmission and Drivetrain (8%)
Brakes and Traction Control (3%)
Suspension and Steering (24%)
Electrical and Air Conditioning (22%)
Paint, Rust, Leaks, Rattles, and Trim (6%)
Other (2%)
Chart based on 87 repairs.
2003 Infiniti FX engine repair cost distribution
$2500+ (0%)
$1000 - $2499 (11%)
$500 - $999 (22%)
$100 - $499 (56%)
< $100 (11%)
Chart based on 27 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2003 Infiniti FX 4dr SUV
315-horsepower 4.5L V8 5-speed shiftable automatic AWD
| 42600 mi US $1300 |
Replace main engine pulley |
| 168000 mi US $30 |
Car exhibited brief engine roughness, later the Service Engine Soon light was lit. After stopping engine, the car would not start, had to be towed home. Error code indicated bad camshaft position sensor, which I replaced the next day |
| 222000 mi US $400 |
Replaced leaking radiator. Proactively replaced water pump, thermostat & radiator hoses, coolant. |
| 99000 mi US $350 |
Camshaft sensor needed to be replaced |
| 108000 mi US $450 |
Cam Shaft sensor replaced |
| 140000 mi US $515 |
sensor replaced, battery replaced |
| 50000 mi US $250 |
Cleaned fuel injectors due to gunk build up - cause misfiring or not all 8 cylinders working. |
| 93000 mi US $260 |
Muffler developed rust and needed replacement |
| 100000 mi US $360 |
One cylinder lost compression. Dealer tried carbon treatments, but they did not work. Told that only remedy was to replace engine for cost of $8,600. I passed, choosing to trade it in on another new vehicle. |
2003 Infiniti FX 4dr SUV
280-horsepower 3.5L V6 5-speed shiftable automatic RWD
| 150000 mi US $350 |
replaced both valve cover gaskets (leaking heavily), replaced coil and spark plugs. Car had awful miss in cylinder 3, miss corrected, but now idle is between 900 and 1200 rpm. |
| 153000 mi US $150 |
Replaced grounding kit after coils and plugs. |
| 161900 mi US $100 |
spark plug gasket leaking. Pull valve cover and seal. |
| 182500 mi | Exhaust heat shield strap rusted thru causing rattle. |
| 232000 mi US $325 |
Leaking from valve covers |
| 259000 mi US $150 |
Replace water pump and thermostat. Latter probably failed first. |
| 131700 mi US $250 |
Oil Pan gasket leak, Oil Cooler o-ring leak Oil leaked into coilover and spark plug from Valve cover |
| 172000 mi US $130 |
Put washer in oil plug stopping leak |
| 196000 mi US $750 |
radiator leaking - replaced radiator spark coil failed -replaced |
| 130000 mi US $1600 |
Sensors and coils had to be replaced |
2003 Infiniti FX 4dr SUV
280-horsepower 3.5L V6 5-speed shiftable automatic AWD
| 150000 mi US $50 |
Cam sensor |
| 169000 mi US $210 |
Cam shaft positioning sensor went bad resulting in VDC, Check Engine and traction control light to come on along with vehicle turning off while driving. |
| 182000 mi US $600 |
Head Gaskets needed replacing - leaking oil |
| 186500 mi US $500 |
Coolant Hoses, Induction service, transfer case fluid change, gaskets, oil change, overall inspection. |
| 193300 mi US $750 |
Main gasket seal |
| 101500 mi US $850 |
Replace radiator (hole in it) replace thermostat replace upper and lower rad hoses Replace radiator (hole in it) replace thermostat replace upper and lower rad hoses |
| 126000 mi US $1350 |
Replace serpentine belt tensioner. leaking "O" ring at oil cooler housing. It was only a small leak. |
See TrueDelta's information for all Infiniti models.
