Close
QUESTIONS

RepairPal is your advocate for car care advice and guidance

Q: Possible bad fuel pump??? on 1996 Pontiac Bonneville

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Car turns on right away, but when i'm driving, the engine revs up. It almost feels as if the engine is choking and gasping for air. I just drov 75 miles from my home. the rev comes and goes. I did a stretch of over 25 miles without anything happening. The power drops too. My alternator is new and I just has the fuel filter replaced this morning. Any advice would be much appreciated.

Thanks,

Ron
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
| |
Its so hard to guess at the problem without being able to experience the problem first hand or be able to drive the car. The problem could be caused by a multitude of problems. I wonder if the problem is the transmission that is slipping or a restriction in the exhaust that is causing back pressure and not leaving exhaust out of the engine. Checking fuel pressure by tapping into the fuel line and taping the fuel pressure gauge to the windscreen prior to test driving the car. Drive the car and see whet the fuel pressure gauge reads when you experience the problem. It would be interesting to see if you are loosing ignition when you experience the drivability problem .I do not have great experience with Pontiac but to diagnose this type of problem I usually end up attaching a scan tool to the diagnostic socket under the dash and or an oscilloscope on any sensor I feel may be failing (crank angle and cam sensors are real important as to is the air flow meter signal to the computer).
Didn't find what you were looking for?