1989 3.1 olds cutlass supreme fuel injected.

Asked by sconner133 Jun 09, 2014 at 03:33 PM about the 1989 Oldsmobile Cutlass Supreme

Question type: Maintenance & Repair

My car starts and runs really rough to the point where it stalls out. I replaced the
throttle position sensor the map sensor and a fuel filter. it ran fine for about 1/2 hr drove
it 25 miles and then it died as i turned onto my road. fuel pump is engaging and i have
spark i put fuel into it dry gas and fuel injector cleaner and it still runs really rough i
touch the gas and it stalls. i was told that i need to replace the fuel pump is there
anything else i can try b4 i drop the gas tank and buy a new fuel pump? i tried the fuel
release valve but nothing comes out. fuel pump is my last option. I need suggestion on
what else to try or answers telling me what i need to do to fix it fuel pump?

1 Answer
125

Claude answered 10 years ago

Take tour gas cap off and try running it on the road. Same happened on my 88, then cap vent was plugged up, causing a vacuum. The the engine would stall out. Good luck!

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