1997 CHEVY S-10 PCM

  • Tiny
  • ericde
  • 1997 Chevrolet S-10

Computer problem
1997 Chevy S-10 4 cyl Two Wheel Drive Manual 300k miles

I recently replaced a leaky fuel injector, since then my truck has an oddly erratic idle. A small 1-200 rpm bounce every second, barely noticeable, I didnt notice it, but the smog guy did when the service engine soon light came on in the middle of the test, so he wouldn't pass it. So I read a little on the Idle Control Valve and how when disconnected the PCM has to relearn the correct idle. Is there a procedure I need to imply or should it relearn on its own. Would that even contribute to an rpm surge?

Tuesday, June 29th, 2010 AT 7:35 PM

1 Answer

  • Tiny
  • rasmataz
  • Member

Could be an idle relearning problem fast way to do it is use a Tech1 scantool or just clean out the idle air control valve and see what happens

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Wednesday, June 30th, 2010 AT 4:35 AM

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