Question about 1989 Pontiac Firebird

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1989 pontiac gta won't start when hot and runs bad after warm

Have replaced distributor, fuel filter, plugs, wires, rotor, dist cap, had fuel pressure checked and pressure regulator tested also. seems to have weak spark. also runs slightly rich when cold, but seems to run well un til it gets up to temp. then it surges with load on motor. but idles fine in park. Once it gets up to temp you can floor it and it feels like it is bogging out. it will kick into passing gear but wont gain speed untill you roll off of the throttle. it does this at about 2500-3000 rpm. when up to temp and smokes a white gassy smoke

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  • wayne brison Jan 30, 2009

    I went and bought myself a mechanics stethoscope and listened to my fuel injectors and figured out that my #3 injector is bad. unplugged it and the car runs like a champ. it seems to have solved my problem completely

  • carhob May 11, 2010

    did you have cat.system check

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I melted my module off of mine 89 gta once on my disturbertor and also had the plugs that snaps onto the coil pack cause a lot of problemns because it wasn't snapped all the way don on the coil pack not the plug wires but the wiring harness plugs and it gave mne a lot of problems.may want to check yourself took it to a dealer ship 4 weeks in a row and every time they said it was fixed i drove it for a couple hours and it would quit and not start and that was all it was but it started with a tune up wires, cap ,rotor button.

Posted on Sep 21, 2009

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