RUNNING ROUGH

1991 Nissan 240SX

Tiny

uconn7kmw

February, 18, 2009 AT 1:12 PM

Engine Performance problem
1991 Nissan 240SX 4 cyl Two Wheel Drive Automatic 140000 miles

Car starts ok, but when driving it run ok for awhile then gets rough. Other then plugs and wires or bad gas, what should I check?

Also, when driving down the road, sometimes the RPM's go up with out touching the gas pedal.

FOUND 4487 RELATED QUESTIONS

Running Rough

27 ANSWERS
34 IMAGES

Idles Rough/changed Ects

37 ANSWERS
3 IMAGES

1 Answer

Tiny

rasmataz

February, 18, 2009 AT 2:44 PM

Inspect/clean/test the IACV-AAC valve and the throttle position sensor

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