1997 Oldsmobile 88 1997 Not Starting P0300

1997 OLDSMOBILE 88
125,000 MILES • 6 CYL • FWD • AUTOMATIC
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BRI2400
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  • 1 POST
I was on my way home from work last week and I noticed the temperature gauge starting to go up, almost to the point where it was about to overheat. I also noticed it was running slightly sluggish but managed to get home.

I let it sit for a day, it started up but the check engine light was flashing, it was also running really rough.

I let it sit another day and tried to start it today and I wont crank at all. I replaced the Ignition Control Module but that didn't do it. The code i am reading is P0300.

Any ideas of what else it could be, or I should try replacing? My thinking is that if it was plugs, wires, or coils it would at least start but run rough.

1997 Olds 88
Apr 17, 2010 at 2:10 PM
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RASMATAZ
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P0300 is normally caused by vacuum leak and contaminated fuel.Also do below

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 away from ground-have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil
Apr 17, 2010 at 4:35 PM
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HWENICK
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there was a recall in 2003 for a vacuum leak. call olds and see if your car is listed for this recall. but my car still doesnt work right even after it is fixed. it causes serious damage!!! i got cylinder wash had the pump filter and regulator changed now i am showing a P0306.
Apr 29, 2010 at 4:02 PM
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