, 2.2L ECO-TECH P0300

2002 Pontiac Grand Am

Tiny

jediclon40

May, 7, 2011 AT 4:39 PM


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.

FOUND 181 RELATED QUESTIONS

P0300

13 ANSWERS

How To Fix Dtc P0101&p0300

2 ANSWERS
5 IMAGES

3 Answers

Tiny

fixitmr

May, 7, 2011 AT 5:41 PM

Read codes again?

Tiny

jediclon40

May, 7, 2011 AT 6:59 PM

Yes, same code p0300.

Also just sis the dollar bill test on the tailpipe, tried to suck it in. Vacuum test held steady 40.

Tiny

fixitmr

May, 12, 2011 AT 5:15 AM

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.

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