1991 Nissan 240SX Running rough

1991 NISSAN 240SX
140,000 MILES • 4 CYL • 2WD • AUTOMATIC
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UCONN7KMW
  • MEMBER
  • 1 POST
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.
Feb 18, 2009 at 1:12 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Inspect/clean/test the IACV-AAC valve and the throttle position sensor
Feb 18, 2009 at 2:44 PM
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