Question about 2000 Pontiac Bonneville

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Stall on hiway wont restart til it cools off once restarted runs really rough

Just replaced fuel pump and coolant temp sensor

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Check coils.

Posted on Nov 29, 2013

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6ya6ya
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Posted on Jan 02, 2017

  • 67 Answers

SOURCE: 1994 pontiac bonneville fires up but stalls imediatly

WOW a 94 with 46K on it thats rare. Your computer may be bad it sends the pulse to the injector.

Posted on Apr 10, 2009

ourhowse
  • 2007 Answers

SOURCE: car idles rough and stalls

Have you ever changed the fuel filter? If it's not that, and it's not a vacuum leak, it is probably your idle air control valve.

Posted on May 08, 2009

  • 14036 Answers

SOURCE: 2002 Pontiag Grand Prix GT 3.8 Runing rough and stalling at stops

sound like vacuum leak or fuel pump problems.scan it to see if egr valve sticking open.

Posted on May 14, 2009

  • 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

polarcycle
  • 1392 Answers

SOURCE: RPMs rev up while driving, mechaninc said the

Why would you replace the fuel pump and filter for a compression problem. You either have a bad cylinder head, or a bad motor. Those are the only 2 things that will give you low compression. If you are talking about the engine revving up while driving down the road, you have a transmission problem.

Posted on Jul 29, 2009

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