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NEUMANNZZ · 10-13-2009, 05:49 PM

check voltage at coil, ignition on, engine stopped and in park.
should be 12vdc. put it in reverse. any spikes or drop in voltage. same for drive. might just be the park/neutral switch. does it start in neutral?

maybe cycle the tilt steering in different positions, might help.

10-13-2009, 05:49 PM	#185
NEUMANNZZ GMC RULZZ Join Date: Mar 2005 Location: San Diego Age: 43 Posts: 9,780	Re: 1991 chevy 1500 5.7 tbi erratic idle check voltage at coil, ignition on, engine stopped and in park. should be 12vdc. put it in reverse. any spikes or drop in voltage. same for drive. might just be the park/neutral switch. does it start in neutral? maybe cycle the tilt steering in different positions, might help. __________________ O2 GMC RCSB 4.8L V8 AUTO 3.73's rebuilt/beefed up 4L60E(at 43,000miles) Matching Ninja 500r Last edited by NEUMANNZZ; 10-13-2009 at 05:49 PM.