88 Monte carlo getting way to much fuel

Asked by Sep 22, 2010 at 07:18 PM about the 1988 Chevrolet Monte Carlo

Question type: Maintenance & Repair

Hi folks .. my 88 monte carlo fires up fine in the morning ,,, but after i drive a while an get it hot it wont restart... i took off air cleaner and can see the injectors are blowing way to much fuel in for cranking... as a matter of fact if i crank it a bit then unhook injectors it fires right up and runs on the fuel laying in the manifold... i have tried unhooking many sensors to no avail... why am i getting the command for so much damn fuel on start up?? thanks for any help .... Frank

1 Answer

13,125

Well it cant be an 88 as that is last year Carburator unless there is a TBI setup out there I do not know about. Mine is an 88 When you car wants to dump fuel the computer has sensed too much AIR via the o2 sensors. Check for vacuum leaks if this came on all of a sudden. Check to make sure the Big tube is tight around the Mass Air Flow sensor or tube to MAP sensor. Make sure the PCV valve to blow apart giving too much air. hmmm Spray around the intake with carb cleaner for any intake leaks ... ( You can use propane )

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