92 grand prix se Posted January 1, 2012 Report Posted January 1, 2012 I have a 92 grand prix with a 3.1 with 80,000 miles , at times it will crank with a bump of the key next time it will take about 5 seconds or more of cranking, it may start up and stay running or may start for a second and die I may have to do it a couple of tries when it fires I will have rev it up slightly for a couple of seconds to keep it running but has never not started, and while driving it might die at idle or may not it has died up to 5 times in a 30minute drive time, so fare I replaced the injector o rings, intake manifold plenum gasket, egr valve, a/c delco spark plugs, plug wires cleaned the throttle body, and cleaned out the egr port on the intake it was nearly stopped up and blew out the carbon build up. Its had a hard start for the past year or so but it has been getting worse Quote
94 olds vert Posted January 1, 2012 Report Posted January 1, 2012 I'd say fuel pump or fuel injector issue. Test for fuel pressure should be around 40 PSI. Injectors should ohm out to 13. Anything less and they might be bad. Take the fuel pump test lead and connect it the positive terminal on the battery should be able to hear it run. Quote
92 grand prix se Posted January 1, 2012 Author Report Posted January 1, 2012 I did check the fuel pressure it was around 40 with a hard or normal start Quote
94 olds vert Posted January 1, 2012 Report Posted January 1, 2012 Well that's good. Hiw about the ICM/Coils? Those could cause that problem. I'm still thinking it could be Clogged/Bad injectors. Quote
92 grand prix se Posted January 1, 2012 Author Report Posted January 1, 2012 I'll take the icm to orielly's tomorrow and have it tested Quote
virtuetovice Posted January 1, 2012 Report Posted January 1, 2012 It might also help to do an idle relearn after so much work has been done. Quote
92 grand prix se Posted January 3, 2012 Author Report Posted January 3, 2012 had the icm tested at orielly's it tested good, but now it's dieing wile driving, I'll recheck the electrical connections tomorrow to be sure I have them plugged in all the way Quote
92 grand prix se Posted January 5, 2012 Author Report Posted January 5, 2012 (edited) I believe I figured out my problem some how I missed the fuel pressure regulator was leaking,got it replaced so fare it starts, ideals, and runs much better Edited January 5, 2012 by 92 grand prix se Quote
92 grand prix se Posted January 8, 2012 Author Report Posted January 8, 2012 does anyone know were I can get the vacuum line harnesses that goes to throttle body that has 3 lines coming off it Quote
94 olds vert Posted January 20, 2012 Report Posted January 20, 2012 Try a junkyard. That's the only thing I can say. I replaced mine with a junkyard part. Quote
Leo090 Posted January 20, 2012 Report Posted January 20, 2012 When was the last time you changed your battery? If its older than 5 yrs replace it, and test the voltage on your current battery. Maybe try a Idle Air Control Relearn, if that doesnt work, maybe you need a new Idle Air Control Sensor. These are just guesses Quote
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