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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Pontiac Technician
Category: Pontiac
Satisfied Customers: 2373
Experience:  GM Grand Master Technician 2007. 14 years experience.
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My 2001 grand prix check engine light stuck on have done many

Customer Question

my 2001 grand prix check engine light stuck on have done many checks and repairs first code came up said it was my maf sensor so I relaced and than code said it was idle arm control replaced and now its showing too lean and check engine light still on and runs terrible in idle but after acceleration runs great
Submitted: 1 year ago.
Category: Pontiac
Expert:  Gary replied 1 year ago.
Welcome! My name is ***** ***** I will do my best to assist you with this problem.
I am sorry for the long wait
what is the code number that is set ?
are you 100 % sure there are NO vacuum leaks at all ?
Customer: replied 1 year ago.
yes, the code is reading intermittent misfire only on 1 bank
Customer: replied 1 year ago.
we've checked for leaks even around manifold gasket took it off and replaced fuel injector O rings, checked egr thingy also,
spoke with someone who said to do some tests for oxygen sensors? Is it possible that the maf sensor I replaced could've been defective?
Expert:  Gary replied 1 year ago.
at idle it runs bad like there is 1 or 2 cylinders skipping ?
off idle or bringing up the RPM over 1000 or 1200 it runs fine ?
it could be but usually would set a code for MAF