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Misfire #3 cylinder




By aflerblance on Sep 09, 2009

" "
P0303 OBD-II code after replacing ignition coils, plugs, and reprogramed ecm

Clarification Request

Posted by emissionwiz on Sep 09, 2009

WHY ID YOU REPLACE THESE PARTS? DID YOU TEST THEM FIRST OR ARE YOU JUST GUESSING HERE?

Posted by fknstart on Sep 09, 2009

IS THE HEAD GASKET OK

Best Solution

posted on Sep 09, 2009
Very Helpful)

MNfisherman

Rank: Wiz  Cars  Expert
Rating: 85%, 2687 votes
did you change the wires? Most people don't know that plug wires need to be changed just as often as plugs. They get worn out quick. Also check voltage pulse coming from crank sensor to see if it sending signal to module and coil packs.
Also check that you do not have any stuck or leaky injectors.

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