1997 Nissan Truck Missin/Rough Idle

1997 NISSAN TRUCK
125,000 MILES • 4 CYL • 4WD • MANUAL
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Z28DYLAN
  • MEMBER
  • 1 POST
I have a 1997 nissan pickup 2.4L and it has a problem idling. It hops around from 900 to 600 RPMs. If i rev it up to 1500RPM it's fine though, and it has no problems under load if you get the RPMs up. I've had the distributor, plugs and wires replaced and the fuel pump and filter are also good. The check engine light is on for the rear oxygen sensor thats behind the catalytic. Would that be causing my problems or is there something else? I'm desperate for a solution.
Sep 16, 2010 at 2:45 PM
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DAVE H
  • ✓ASE Certified Mechanic
  • 13,384 POSTS
  • ASE Certified Mechanic
Hello .. thanks for the donation .. much appreciated.

The 02 sensor will not be causing the loping .. you need to check all engine vacuum lines, sound's like you have a leak somewhere.
Sep 16, 2010 at 4:35 PM
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