Question about 1994 Pontiac Bonneville
You have to jumper the two top right terminals in the ALDL connector to pull up the codes. It should flash a 12 first to tell you that you are talking to the ecu. Check all of your fuses.
Posted on Oct 11, 2013
Testimonial: "I did that the light would not flash I checked all fuse they r fine I don't know y the radio would go out after I did it n the air bag light n a weird buzzing sound when I start it my car has a mind of its own thanks for the solution"
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Posted on Jan 02, 2017
It sounds like your alternator belt is loose. It will expand as it gets warm from running the engine. That will allow the battery to drain. Tighten or replace the belt.
Posted on Jul 15, 2009
SOURCE: 1995 pontiac bonneville stalls
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.
Posted on Dec 24, 2008
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