if bank 1 and 2 are running lean and there is a random misc. cylider misfire and also the fuel pressure is lower than normal what could that be. i changed the fuel filter reset the code n it came back

mfidler619
0

Asked by mfidler619 Dec 22, 2012 at 10:43 PM about the 2002 Chevrolet Tahoe LS 4WD

Question type: Maintenance & Repair

1 Answer

John Saffrahn
20,315

Bad fuel pump bad fuel pressure regulator. The low fuel pressure is causing the lean codes and random cylinder misfire. Fix the fuel issue and it will fix all three codes.

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