Engine Performance problem
1997 Nissan Truck 4 cyl Two Wheel Drive Manual 211000 miles
Dear Car Pros,
My engine starts up fine but the idle is very rough and the engine stalls. No 'Check Engine Light' is present at any time. I need to feather or depress the gas pedal to keep it from stalling. If I get the engine to somewhat warm up then it idles(very rough) for 6-10 minutes. When it's cold maybe 2 minutes. The tach shows rpm's on the high end 1800-2k and the low end 500 and below. All avenues lead me to the IACV-AAC valve but have tested it with battery clips and wires to test the solenoid with the AAC attached to it and the solenoid SEEMS to work as I can see the plunger moving in and out as I energize the solenoid.I have cleaned the AAC air passages and throat of the throttle body and MAYBE has helped alittle.I have a Nissan Factory repair cd in pdf and has helped tremendously. But cannot find the problem due to the erratic idle. I can't just throw parts at it as an IACV-AAC is 165 clams from the dealer. Can you help? Thank You!
Wednesday, February 11th, 2009 AT 7:35 PM