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1999 Buick Regal 3800 SC rough idle, occasionally stalls, p0102

From a cold start car will start and run good. but as it warms up the idle gets alot more rough, and will randomly surge. also sets maf code p0102 when that happens

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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  • 24 Answers

SOURCE: 1999 buick regal codep0305

Cylinder number 5 is misfiring. Check spark plug, spark plug wire and ignition coil for the number 5 cylinder. The number 5 cylinder is the closest to the front of the car on the drivers side. With engine running in dark (at night) take a spray bottle of water and lightly mist spark plug wires and coil and look for arcing. Autozone will test coil for free.

Posted on Nov 30, 2008

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SOURCE: 1991 buick regal starting and running problem

Sounds like your car is overheating. If you have a temp gauge it should show that. If you just have an idiot light, by the time it comes on it's already too hot to operate. AFTER the car is cooled down, open the radiator cap to see how much coolant has been lost. Chances are there is alot missing. Add WATER (no sense in adding coolant if it's going to leak out) and idle the car at home. Look underneath as it warms up to find where the leak is.

Posted on Apr 05, 2009

emissionwiz
  • 76132 Answers

SOURCE: check engine light comes on intermittently,

the 1st thing u need to do is have the system computer tested for trouble codes, anytime the light comes on a trouble code is stored, there are over 200 of these codes for potential system malfunctions, yours sounds like a O2 problem.

Posted on Jun 10, 2009

  • 2 Answers

SOURCE: ENGINE IDLES ROUGH, BUT RUNS FINE WHILE DRIVING

Check all vacuum lines for leaks. Check spark plug wires for and spark plugs that may be worn and causing idle misfire.

Posted on Aug 29, 2009

  • 196 Answers

SOURCE: 97 buick lesabre 3.8 Idles rough and stalls out.

ignition system not operating properly ,or intake air leak ...crank engine get a can of staring fluid spray around the intake if the motor idles up you got a leak hope this helps

Posted on May 08, 2010

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