If the check engine light is on then find out what codes and start there. Sounds like a map sensor, maybe a bad vac leak.
December, 31, 2010 AT 1:03 AM
How did you determine that it's overfueling?
dave's big backyard!
December, 31, 2010 AT 2:30 AM
Yes this would be nice to know.
November, 11, 2011 AT 7:20 PM
SOUNDS LIKE THE FUEL INJECTION OR WHAT THEY CALL(CMFI) IT IS LOCATED UNDER THE PLENUM OR UPPER INTAKE MANIFOLD. WHAT USUALLY HAPPENS IS THE PLASTIC FUEL LINE THAT GOES TO THE CMFI UNIT CRACKS AND FLOODS THE LOWER INTAKE MANIFOLD AND ALL THE GAS FLOODS ALL CYLINDERS. THIS IS A VERY COMMON PROBLEM USUALLY AFTER ABOUT 180,000 MILES. IT SHOULD HAVE BEEN A RECALL!