fuel smell, losing fuel, car dies going down rd with no warning, will start back up then acts as if running out of fuel regardless of amount of fuel...

Asked by Oct 28, 2016 at 11:39 PM about the 2005 Pontiac Grand Prix Base

Question type: Maintenance & Repair

Will O2 Sensor cause fuel smell, bad gas
mileage, car not to take fuel at gas
pump...major fuel issues please help

2 Answers

13,155

A bad O2 sensor would not cause the fuel smell. O2's are mounted in the exhaust system. I'm going to state the obvious and say you have major fuel issues. Have you checked for any fuel leaks under the car or hood? There could be a broken, rotted, or disconnected fuel line in the system causing a fuel pressure loss.

1 people found this helpful.
80,385

Could also be a problem with the EVAP system. The gas pump problem sounds like a stuck closed vent valve. HTH. -Jim

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