Question about 1998 Pontiac Bonneville

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No codes random misfire idle down and stalls out and restarts on my 98 pontiac bonneville

It will be running great going down the road and have to stop at a red light and the car will idle down and stall out what could cause that to happen?

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  • 379 Answers

Sounds liek your crankshaft postion sensor but to be sure i would replace spark plugs and wires and change the oil if you havent recenly and check your air filter if its to dirty the car will stall

Posted on Jan 14, 2013

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Posted on Jan 02, 2017

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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

  • 93 Answers

SOURCE: 1997 Bonneville - Engine light code P0303

the code you have is for a misfire on #3 cylinder. (im sure you knew this right?). the crankshaft position sensor will not cause one individual cylinder to misfire. what i typicaly do in this scenario is switch the ignition wire off of the guilty cylinder onto a known good firing cylinder and see if misfire moves to the other cylinder. i repeat this process by switching the spark plug and finaly the fuel injector. a compression check may be in order as well (but not a likely cause) unless you have access to a tech 2 (gms diag computer) you will need to clear this code after each component is moved and see if you get a new code ie :p0304 if switched to #4 cylinder..other wise if you do have access to a computer that has a misfire chart in its features you can quickly identify the guilty component. as i side note the ignition coil may also be faulty, but i believe your vehicle has a 3.8liter meaning that it has a coil pack....switch the others i listed and see ow you make out....good luck!

Posted on Jun 11, 2009

  • 69 Answers

SOURCE: Car stalls at idle

the lock up converter is staying engaged when you stop have it scanned for trans codes may need lock up selinoid (tcc) or torque converter changed try putting it in neutral before you stop if it stays running this is probibally your problem

Posted on Jul 15, 2009

  • 84 Answers

SOURCE: 2000 pontiac sunfire misfire

Solution is in the wiring harness....these cars are noted for this as it runs under the rad exposing it to the elements and corrosion. You will need a dealer with the proper scanner to read the code & find the wire.

Posted on Dec 31, 2009

  • 1 Answer

SOURCE: 2001 pontiac bonneville SSEi 3.8 l supercharged.

I have a 2000 Bonneville - I had a problem with the car stalling out - then it did not want to start back up. (When it did it would idle up and down and then die) I changed out the mass air flow sensor - now I have not had a problem. Good luck with it.

Posted on Mar 17, 2010

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My 2004 pontiac grand prix stalls and randomly shut off but will always restart


Does it stall at idle or going down the highway? How long since a tune-up? Can you check for applicable trouble codes? Some of the national brand auto stores will check codes for free.
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Random misfire idle down stall out and restart and drive normal what causes it?


if you have a crankshaft sensor going bad, that could be it. have a parts store retrieve a trouble code, from computer, your service engine soon light came on, yes ? egr valve can cause this, spark plug wires might cause this, check distributor cap/rotor, old spark plug wires can cross fire because of shorting out. see how that works

Jan 14, 2013 | 1998 Pontiac Bonneville

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2001 pontiac bonneville SSEi 3.8 l supercharged. The car runs smooth for 15-30 min then stalls out. And when you attempt to restart it starts and idles up and down. And dies after 30 sec. With no check...


I have a 2000 Bonneville - I had a problem with the car stalling out - then it did not want to start back up. (When it did it would idle up and down and then die) I changed out the mass air flow sensor - now I have not had a problem. Good luck with it.

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1997 Bonneville - Engine light code P0303


the code you have is for a misfire on #3 cylinder. (im sure you knew this right?). the crankshaft position sensor will not cause one individual cylinder to misfire. what i typicaly do in this scenario is switch the ignition wire off of the guilty cylinder onto a known good firing cylinder and see if misfire moves to the other cylinder. i repeat this process by switching the spark plug and finaly the fuel injector. a compression check may be in order as well (but not a likely cause) unless you have access to a tech 2 (gms diag computer) you will need to clear this code after each component is moved and see if you get a new code ie :p0304 if switched to #4 cylinder..other wise if you do have access to a computer that has a misfire chart in its features you can quickly identify the guilty component. as i side note the ignition coil may also be faulty, but i believe your vehicle has a 3.8liter meaning that it has a coil pack....switch the others i listed and see ow you make out....good luck!

Jun 11, 2009 | 1997 Pontiac Bonneville

2 Answers

2000 bonneville


P0300 is a random misfire code, if you are not mechanically inclined the first thing i would do if you havent done so in the past year or more, is change the plugs and wires, a random misfire code can be caused by worn plugs and/or wires not firing properly. let me know if that fixes it.

Jul 03, 2008 | 2000 Pontiac Bonneville

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