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Resources for the Repair and Maintenance of your Infiniti Q45

Infiniti Q45 Models:

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Infiniti Q45 Problems

Exhaust & Emissions -- Verified

Intermittent failure of a purge control valve in the evaporative emission system can cause the Check Engine Light to illuminate. A failed valve should be replaced to correct this problem.
 

Exhaust & Emissions -- Verified

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The crankshaft angle sensor or the camshaft position sensor can fail and cause loss of engine power, an engine that cuts out, and other drivability problems. This will cause the Check Engine Light to illuminate. Certain models have been involved in a recall to replace the camshaft and crankshaft sensors. For more information on this ...

Engine -- Verified

It is not unusual for one or more of the Fuel injectors to fail. Common symptoms would be a rough idle and possible illumination of the Check Engine Light.

Engine -- Verified

If the car drives well at cruise speed, but lacks power while accelerating, there may be a problem with the fuel pump.

Engine -- Verified

Serious engine damage due to timing chain failure can occur.

Infiniti Q45 Recalls (Recent)

Body, Interior & Misc., September 29, 1995

Summary: THE FRONT SAFETY BELT BUCKLE RELEASE BUTTONS CAN BREAK. THESE RED PLASTIC RELEASE BUTTONS ARE MARKED "PRESS." IF A BUTTON BREAKS, PIECES CAN FALL INTO THE BUCKLE ASSEMBLY CAUSING THE BUCKLE TO OPERATE IMPROPERLY.

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Electrical & Lights, July 29, 2002

Summary: ON CERTAIN PASSENGER VEHICLES, ONE OF THE DIODES USED IN THE ALTERNATOR MAY HAVE BEEN DAMAGED WHEN BUILT. THIS CAN EVENTUALLY RESULT IN FAILURE OF THE DIODE AND AN ELECTRICAL SHORT WHICH COULD MELT THE PLASTIC HOUSING.

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Electrical & Lights, July 6, 1999

Summary: VEHICLE DESCRIPTION: PASSENGER VEHICLES. ONE OF THE DIODES USED IN THE ALTERNATOR MAY HAVE BEEN DAMAGED WHEN BUILT. THIS CAN EVENTUALLY RESULT IN FAILURE OF THE DIODE AND AN ELECTRICAL SHORT WHICH COULD MELT THE PLASTIC HOUSING.

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Electrical & Lights, October 25, 2004

Summary: ON CERTAIN PASSENGER VEHICLES, THE BRAKE LAMP SWITCH MAY MALFUNCTION.

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Engine, December 22, 2003

RepairPal Expert Overview:

The circuit board for the crank position sensor and cam position sensor may have improper solder joints. This could cause the Service Engine Soon lamp to come on, the engine may not start, you could experience reduced power, or the engine may stall without warning, which could result in a crash. Dealers will replace the the crank position sensor, cam position sensors, and in some cases, the variable timing control sensors. The recall began on December 22, 2003. The Nissan recall number is R2022 and the Infiniti recall number is R3021.

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Infiniti Q45 Questions and Answers

lmoody, 1990 Infiniti Q45, Cleveland, OH

what should the plugs be gapped at

Visitor, 1990 Infiniti Q45, Pleasant Hill, CA

RIGHT NOW I NEED TO KNOW WERE THE SPARK PLUGS are at under the hood so i can replace them

need 2know, 1990 Infiniti Q45, Panama City, FL

need the location for the spark plugs

ppremore, 1990 Infiniti Q45, Elkhart, IN

Please can someone tell me where my spark plugs are located. A website for A diagram would be a great help if possible.
Thank-you sooo much in advance!

Visitor, 1990 Infiniti Q45, Baltimore, MD

i have a misfire in two coils that i changed already what could it be

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Infiniti Q45 Reviews

my first car is a 96 q45. i love my car! i love the way it handles in the snow and ice i love the v8 i love the gas mileage i love the heated leather seats and the moon roof! i love how smooth ridin it is!! guys i love everything about this car i will never ever get rid of my q45 car!!i fell in love with it!!!!

I recently bought a 2002 Q45- After replacing struts, putting $1220 in Michelin tires, O2 sensor and assorted other items related to a used car, the ride/engine is fantastic. The exhaust system is having issues now due to rust underneath- a common problem with this car. The gas mileage stinks and the required super unleaded fuel wears on your pocket book. This is a really fun and fast car to drive for a luxury vehicle, but be ready for ridiculously expensive repairs when required. This car reminds me of my SAAB- a blast to drive and a bummer when it needs works- too darn expensive to fix! Only buy this car if you can afford to fix it when it breaks!

The Q45 has been one of my best yet. Love the luxury it has to offer like the Gold clock in the middle nice touch for 1994 I would say. This car I used it for work and any long travels. I got sick and lost a lot including my job so I had no choice but to park my baby. Now I need to start her up with a new starter and back suspension other then that had to replace tare and ware brake lines. That is sure to happen with time, this car is great and I will continue to get it up and going the car is well worth it. The engine in this car has a lot of power to it can not complain here I love this car :)

I love my Infiniti 2003 Q45 and until recently I did not have any issues. After taking the car to the dearler because the Fob kept deprograming they isolated it to a shorted Dome Light. To repair this is 650.00 but I hate it now that they disconeccted it as I have no light when it is dark. Anyone else have this problem?

This is a 1995 Q45a. I purchased it in 1998. Up to a few months ago, I had no problems with it. Performance is and the car is economical to run. Handling of this car is superb.
Currently the valve cover gaskets need changing, the traction and slip option need attention and the muffler has a leak.
It is my intension to fix these items and have my car like new again.