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Discussion Starter #1
hello...
im a newby and i hope someone can give a good answer:)

09 cobalt lt 2.2 79k 1 owner (ME) Has a bad catch up/slagtime/ when leaving a stop OR hard acceleration BAD ENOUGH TO BECOME A DANGER..
Changed the following..
fuel filter
plugs and wires
air filter
cleaned MAF
ran # diff fuel injec. cleaners over 6 months of so.
always 100% gas
BANGIN MY HEAD HERE....
OTHER THAN THAT CAR RUNS LIKE A SCEAMIN DEMON...ALWAYS HAS.

DEALER SAYS IN SPEC BLA BLA BLA
tps is in the tank with pump..NIIIICE

How do i check fuel pressure? Im starting to think its a failing fuel pump..which was replaced with the recall BS cpl yrs back.
I have scanned with my obd but not sure how to read certain % of certain things like M<AF MAP TPS etc
Any place i can find SPECS online?
THANK YOU IN ADVANCE FOR SOLID FEEDBACK WITH THIS PROBLEM!:)
 

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Have you cleaned the throttle body?
 
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