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2002grandprixgt

2002grandprixgt

New member
can sumone tell some of the signs of a mass airflow senors taking a crap? My 02 grand prix will hit about 45 50 mph and not wanna go any faster can sumone give me some insite plz?
 


a bad maf would make the check engine light come on. is it on? have you had it scanned if it is?

could be a number of thing that could be wrong.
 
the one code is for low cat effeciency, which can mean a clogged cat, which would most certainly account for the lost power. 440 is evap. could be a bad charcoal canister? not sure about that one... 128 is most likely low coolant, or bad thermostat.
 
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