Infiniti Q45 Problem Reports

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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 recall, please click here»

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

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.

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.

 

Serious engine damage due to timing chain failure can occur.
The ignition coil may intermittently fail and cause drivability problems.