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Infiniti
QX4
14

Erratic Idle Speed and Increased Accelerator Pedal Effort on Infiniti QX4

Problem Description and Possible Solution

Carbon deposits on the throttle body may cause any of the following issues: Idle speed fluctuation, incorrect idle speed, difficulty accelerating way from a stop, and or increased accelerator pedal resistance. Our technicians tell us a revised throttle body and associated parts are available to resolve this issue.

Problem Data
RepairPal Verified
Average mileage: 162,486 (131,458–180,000)
Engine affected: 3.3L V6
4 model years affected: 1997, 1998, 1999, 2001
14 people reported this problem
Comments
Viewing 1 - 3 of 3 comments
Replaced the IACV three times. Now I am told by mechanic that I need to replace the 2 cam sensors and the crank sensor. I think they are guessing at my expense. Finally have the idle under control but now loss of power and stalling when accelerator is pressed to the floor to pass another vehicle, had gear changing and sometimes will not change gear. Tranny is fine.