1990-1996 Infiniti Q45: Reliability
Updated: 11/23/08
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Our reliability study for this generation Infiniti Q45 includes details on average repair costs, manufacturer recalls, and everything you need to know to gauge the long-term reliability of this generation Infiniti Q45 .
Trouble Spots
Consumer Guide's® Auto Editors have scoured repair bulletins and questioned mechanics to search
for commonly occurring problems for a particular vehicle. In some cases we also give possible manufacturer-suggested
solutions. In many instances these trouble spots are Technical Service Bulletins posted by the manufacturer,
however, we have our own expert looking at additional vehicle problems.
Automatic transmission:
A campaign was conducted to improve automatic-transmission life by installing an inline filter and auxiliary oil cooler. (1991)
Brakes:
To fix brake judder and/or a groaning noise when coming to a stop, new front brake pads were developed. (1990-94)
Engine knock:
A knocking noise when the engine is cold, is probably coming from the ASCD cable rattling in the bracket near the firewall and is corrected by tie-wrapping the cable to the bracket. (1990-93)
Engine misfire:
If the idle quality gradually deteriorates, feeling like the idle is set too low, a revised ECM (computer) should solve the problem. (1994-95)
Engine stalling:
Stalling during coast-down idling is due to a loose connection at the air-flow meter. (1990-96)
Radiator:
The radiator filler neck was prone to breakage and the radiator was redesigned so that the neck is a one-piece, die-cast design. A new cap is also required. (1990-92)
Vehicle shake:
Engine vibration felt through the steering wheel, seat, and floor with the brakes on and the transmission in drive, may be corrected by replacing two motor mounts and engine-control computer. If the vibration is worse when the A/C is on, the compressor may also have to be replaced. (1990-91)
Consumer Guide® Estimated Repair Costs
This table lists costs of likely repairs for comparison with other vehicles. The
dollar amount includes the cost of the part(s) and labor (based on $50 per hour) for the
typical repair without extras or add-ons. Like the pricing information, replacement
costs can vary widely depending on region. Expect charges at a new-car dealership
to be slightly higher.
| Item Name | Repair Cost |
| A/C Compressor | $875 |
| Alternator | $395 |
| Automatic Transmission or Transaxle | $975 |
| Brakes | $235 |
| Exhaust System | $1,680 |
| Radiator | $545 |
| Shocks and/or Struts | $910 |
| Timing Chain or Belt | $1,160 |
| Universal Joints | $750 |
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