Question about 1999 Pontiac Sunfire

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Car stalls My car stalls sometimes but then starts right away What is the cause

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  • Craig Ward
    Craig Ward Feb 03, 2009

    i'll be driving along smoothly and suddenly the car will stall and stop.So i suspect a fuel filter clog or the injecters may need cleaning.

  • Anonymous Mar 28, 2014

    car stalls right away after starting

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Diving away form stop and engine will stumble and stal.engine will start after 5 to 10 min and drive fine until porb starts again.

Posted on Feb 25, 2009

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Ive seen fault crank positon sensor cause this also clogged injectors cause this ,for sake of saving money try some chevron techron injecttor cleaner but if u end up having take this car in i would go to the dealer cause all places charge the same 4 labor n lot small shops cause more damage than they fix

Posted on Jun 22, 2008

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michigan man
  • 3533 Answers

SOURCE: Car stalls right after starting

check all vacuum lines and also check to see if there is any leaks around the intake manifold and check the fuel pressure and check for any loose or damaged wires to the coil packs and the alternator

Posted on Mar 20, 2009

  • 1 Answer

SOURCE: stalls while driving

i have a jeep grand cherekee it was doing the same thing for me it was the computer

Posted on Apr 21, 2009

GM Elec
  • 1000 Answers

SOURCE: car can stall in warm weather

Most likely if it is temperature related you may have a temperature sensor that is failing. The sensor may not be reacting properly to the actual temperature and causing the engine to run rich in warmer weather when a richer setting is not required.
You could have a sticking injector or sticking EGR valve or a faulty TPS switch, all can cause a rich condition and a poor running engine.
Is the service engine light on or come on at some point?
I would start by having the car scanned for trouble codes. You can have the scanned at no cost to you at your local Auto Zone or Advance Auto Parts. Write the codes down and respond back.

Posted on Sep 19, 2009

Testimonial: "Hi I unplugged the heat sensor and it stopped doing the problem so thanks for the great input thumbs up for u...."

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SOURCE: Car stalls while you drive sometimes. It stalls

have the egr checked

Posted on May 21, 2010

  • 1 Answer

SOURCE: MY 1997 GMC sierra 2500 diesel stalls. you can be

Purchased a new gray Standyne Fuel Solenoid Driver kit with heat sink and extended wire harness. Mounted on left fender well and was able to do the work myself in about an hour. No need for injector pump work. Solved stalling issues and it starts up easier as well. These are all over ebay. Very common issue with this engine, and the GMC knuckleheads knew about it and didn't do anything to educate dealerships on a permanant fix.

Posted on Aug 05, 2011

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Car can stall in warm weather


Most likely if it is temperature related you may have a temperature sensor that is failing. The sensor may not be reacting properly to the actual temperature and causing the engine to run rich in warmer weather when a richer setting is not required.
You could have a sticking injector or sticking EGR valve or a faulty TPS switch, all can cause a rich condition and a poor running engine.
Is the service engine light on or come on at some point?
I would start by having the car scanned for trouble codes. You can have the scanned at no cost to you at your local Auto Zone or Advance Auto Parts. Write the codes down and respond back.

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Lugnut61

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Here is the most common cause of surges and stalls and low idle, it is the idle speed control air-bypass valve and throttle valve (IAC for short), they get full of gunk over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

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