I have 96' Pontiac Bonneville SE that stalls out either when driving or idleing in park. Sometimes it will start back up right away but other times it wont start again till the next day. It doesn't seem to matter how fast or slow I'm going. Although if it stalls while going free way speeds it will start its self back up. The check engine light came on and I had it checked, it came up MAF Sensor, I tried cleaning it to see if that would solve the problem. It didn't so I replaced it. Now the engine runs better but still stalls. So I thought it might be a bad battery, I had it checked and it had two bad cells so I replaced it. But still it stalls. What could be causing this problem?
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.
SOURCE: engine falls below 500rpm lights dim and engine stalls out
I had a bad air conditioner compressor that caused this same problem. It had almost completley seized and gave the car some real trouble starting. The burning smell I had was caused from the belt rubbing around the seized pully.
SOURCE: cooling fan dosent come on when temperture rises(1996 pontiac bonneville se)
Check the relay for the fan. switch it out with another try this then write back.
SOURCE: cooling fan dosent come on when temperture
You seem to have a bad cooling fan switch...it's connected to the side if the engine and when it gets too hot it turns on your cooling fans. The switch doesn't cost that much, $10 to $15 and takes all of about 15 minutes to replace.
SOURCE: 96 firebird is having problems,
Have you ran a diagnotic check to see what codes are coming up?
Throwing parts at the problem will get expensive. It will also ruin other parts (Like your catalytic converter), when your engine is misfiring and not running properly. Your vehicle is an OBDII system, fix the problems in the order they appear (then clear, run and recheck)...meaning, one problem can cause another and so on. Fixing one problem may correct the other ones too.
You may get lucky with the shotgun approach, but usually not.
Run a diagnostic test, at least you'll know where to start looking for the problem.
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