euroman Posted May 12, 2005 Report Share Posted May 12, 2005 Just picked up a 92 lumi w/3.1 and it has an idling prob. the problem is at an idle, it dips way low in rpms and somtimes stalls. I already did an idle relearn, but that did nothing. any ideas??? Quote Link to comment Share on other sites More sharing options...
89SupremeCutty Posted May 12, 2005 Report Share Posted May 12, 2005 My cutty has the same motor and does the same thing. Try replacing the IAC and see if that helps. If not, it might be your TPS sensor. Quote Link to comment Share on other sites More sharing options...
EurosportZ34 Posted May 12, 2005 Report Share Posted May 12, 2005 sounds like you need to do an idle relearn on it... Quote Link to comment Share on other sites More sharing options...
EurosportZ34 Posted May 12, 2005 Report Share Posted May 12, 2005 i've had problems too when i tried to do an idle relearn on my Lumina... Quote Link to comment Share on other sites More sharing options...
DiscoStudd Posted May 12, 2005 Report Share Posted May 12, 2005 Try replacing the IAC and see if that helps.I agree with checking the IAC. You might want to search for a vacuum leak (make sure the hose running from the brake booster to the intake manifold is properly connected and not leaking.) I would also take out the EGR and clean the valve itself and the passages on the intake manifold out. Other possible problems: Crank Sensor and fuel pressure regulator... Quote Link to comment Share on other sites More sharing options...
euroman Posted May 12, 2005 Author Report Share Posted May 12, 2005 problem solved, it turned out to be the fuel pressure regulator. Thanks for your help! Quote Link to comment Share on other sites More sharing options...
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