, 2.2L ECO-TECH P0300
2002 Pontiac Grand Am • 4 cylinder 2WD Automatic •
I recently had my check engine light start to blink. tested the code and it was p0300.
I changed the plugs, coil,icm,checked vaccum,fuel pressure even battery and alt.
after i changed the icm the car ran beautiful until i was in the drive-thru, the light started to blink again. as it is supposed to do, the engine went into rich mode ie.trac off no power running rich. i am at my wits end! any help in what direction i should go would be greatly appreciated. also when it went into rich mode.it died and acted like the batt. was dead until i jumped it.
also just sis the dollar bill test on the tailpipe, tried to suck it in. vacuum test held steady 40.
When it's cold again how does it run? sitting in drive thru heats engine up. when it does it again, try unplugging MAF or ECT.
May 12, 2011.
May 12, 2011.
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