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Roy
Roy, import/domestic specialest
Category: Chevy
Satisfied Customers: 6057
Experience:  ASE master tech for 40 years
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2007 impala 3.9 afm p0300 code. engine bogs 500 rpm and back

Customer Question

2007 impala 3.9 afm p0300 code. engine bogs 500 rpm and back again.
changed wire harness under intake. mice. code and engine performance bad after.
Submitted: 1 year ago.
Category: Chevy
Expert:  Roy replied 1 year ago.

good morning my name is ***** ***** I will assist

300 code is most commonly caused by low fuel pressure. there may not be enough fuel for the engine to run correctly. I would test this first. you can rent a tester at a parts store.

Roy

Expert:  Roy replied 1 year ago.

how are you making out