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1995 Pontiac Bonneville stalls intermitantly while driving (after running perfectly fine for days at a time) and will not start again. At same time will experience some electrical problems with power windows, dash lights, etc. After having it towed it started right up again. This has happened 3 times now. Fuel pump has been replace already because that was what we thought the problem was the first time. Any ideas...?
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Service Engine Soon came back on and the car is again stalling ????? Did you have it checked for DTC'S - diagnostic trouble code's ? Service engine soon light on , codes will be present !
need to pull the balancer off and check the crankshaft sensor for damage. sounds like the fins on the balancer may have gotten bent a little and rubbed through the sensor.
If your check engine light is on, find out the codes. I would have the fuel pressure checked again, first run the car until it stalls again and check it. I've installed pumps that went bad in as little as a couple days
leake intake manafold or bad vac line... try warm soapy water on running motor out of a spray bottle to find leak... the reason the censor seemed to hel is that the take time to set them selfs... after set back to square 1 leak in the air side of motor... typical in your car...
Have you chg.fuel filter and had a fuel pressure test done? Does it have spark after it stalls? Fuel pumps are a common problem, they work when cold get warmed up they quit, after a while quit all together. Do the fuel pressure test.
i had the same problem a few months ago. check your fuel filter. mine was on the car for some time and after replaceing it, car runs great. hope this helps. i would also check your air cleaner. if to dirty will run rich and with a dirty fuel filter your car will stall.
I just went through lots of troubleshooting and expense on my 1996. Whenever I would lift my foot off the accelerator and was below about 30 mph, the rpm's would starts jumping around and sometimes it would stall. If I gave it a little gas (accelerator), I could sometimes keep it running. It also backfired once in a while. Starts right back up. Also, if I let it idle while in part, it would die after 1-2 minutes.
I ended up finding a hole in the fuel regulator. About a ~$70 part if you get an AC Delco, but very simple to change.
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