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My 99 sunbird runs fine when cold but stalls when warmed up starts fine after warming up but stalls if you put it in gear smokes black out the mufflers when stalling

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Do you have any codes? it could be bad o2 sensor or Cadalatic converter. i would go to your loacl Autozone or O'relly's have a computor check done its free. there are some cases that the check engin light may not come on but there will be a code saved in the computor. good luck

Posted on Nov 19, 2013

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Posted on Jan 02, 2017

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leetamara
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SOURCE: Stalls when engne warms up

Your ECT (Engine Coolant Temp) sensor is bad. What's happening is at cold start it richens up the fuel mixture and as it warms up the ECM thinks it's still cold and essentially the "choke" is still on. Also check your coolant level. If you don't have enough coolant in you engine/radiator, the ECT doesn't know what to do so it thinks it's cold.

Posted on Jul 13, 2008

dennymulford
  • 1055 Answers

SOURCE: 91 s10 blazer engine surges warm and cold, stalls

tps sencor or maf sencor

Posted on Jan 24, 2009

66 chrgr
  • 1011 Answers

SOURCE: 2000 durango 5.2 cold starts, engine stalls or rpm surging

i know this may sound stupid but if your battery is old or a little weak on this vehicle the idle air control solenoid will act speradicley hunting for were it should be and the vehicle will stall.replace battery

Posted on Feb 01, 2009

  • 62 Answers

SOURCE: Car hesitates/stalls when engine is warm and car starts to move.

Sounds like a bad motor mount, pop the hood and see if the motor shakes or moves rapidly when u put it in gear holding down the brake.

Posted on May 10, 2009

  • 18 Answers

SOURCE: 1999 honda civic 1.6L very intermittent no

IT SOUNDS LIKE A FUEL PUMP OR A IGNITION PROBLEM A INDICATION OF A IGNITION PROBLEM IS THE TACHOMETER SMETIMES WILL START TO BOUNCE UP AND DOWN. CHECK FOR SPARK WHEN IT DIES IF THERE IS NO SPARK THAN IT IS A IGNITION PROBLEM. TO CHECK THE FUEL PUMP TURN THE KEY OFF THEN TURN FORWARDTO THE ACC POSIION AND LISTEN FOR THE FUEL PUMP TO HUMM IT WILL ONY HUMM FOR 5-10 SECONDS EACH TIME TOU DO THIS. THE REASON IT WORKS INTERMITANTLY IS BECAUSE THEY ARE BOTH ELECTRONIC PARTS AND WHEN THEY WARM UP THEY FRITZ OUT LET ME KNOW WHAT HAPPENS AND GOOD LUCK

Posted on May 18, 2009

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I have1990 Chevy Astro van,it starts just fine,when it warms up,driving it or sitting still in drive or reverse, it stalls,I start it back up,in park or neutral,it stays idiling.Idles cold,stalls warm


Check the ECM grounds, they are under the passenger side kick panel. When the engine goes to warm status, the Oxygen sensors come on, If there is no ground on the ECM then it starts pulling ground voltage across the sensors and that causes big issues.

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Isuzu c190 wont start when warm


C190 is a 2.0 L OHV 8V engine same as marine 4AA1.
when warm did you try diesel test fuel?
runs now , right, or runs and stalls. right?
that be the biggest clue there.
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1996 mercedes c280 dies when put in drive


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This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve but always run a OBD2 fault code as well as the cleaning procedure. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control

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2000 durango 5.2 cold starts, engine stalls or rpm surging


i know this may sound stupid but if your battery is old or a little weak on this vehicle the idle air control solenoid will act speradicley hunting for were it should be and the vehicle will stall.replace battery

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93'Saturn engine problem:


engine coolant temp sensor is most likely cracked.. I know it sounds strange but pull it if your looking at the engine it is on the right side of the head Will make the car hard to start, smoke, and the idle will often race up and down.. easy to fix 15 dollars or so..

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