1990 Chevrolet K1500 Logo
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dan kondak Posted on May 21, 2014
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Ran it out of gas, now runs fine cold, as soon as its warm starts hard, and stalls when put in drive

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Bryan Nakamura

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  • Posted on May 21, 2014
Bryan Nakamura
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Is the \'Service Engine Soon\' light on? Only from what you described, it sounds like the engine\'s running in \'open loop\' (fast idle, cold) okay, then when it\'s supposed to go into \'closed loop\', you have a malfunction. Checking the trouble codes will pinpoint the problem; your truck is pre-\'95 so it\'s the older OBD-I and you could get the trouble codes by grounding the proper terminal in the ALDL, counting the blinks of the SES light and using it to determine what electronic control device is malfunctioning. If no SES light/trouble codes and since you ran out of gas (?), it might be time to replace the fuel filter and possibly check the fuel pressure and/or fuel pump.

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  • Chevrolet Master 3,718 Answers
  • Posted on May 21, 2014
 steve
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May have sucked up some sludge and blocked some jets ,try a fuel addative specific for blocked fuel lines etc ,other wise strip down the inj/carb and clear any obstruction

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5 Related Answers

dennymulford

Dennis Mulford

  • 1055 Answers
  • Posted on Jan 24, 2009

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

tps sencor or maf sencor

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Anonymous

  • 6784 Answers
  • Posted on Feb 11, 2009

SOURCE: car spudders when i put in gear

This is water in your fuel lines. when it was very cold, the water in the lines froze. when it melts, it runs to the injector system and causes these types of things to happen during acceleration. i would pick up some techtron. ths is good stuff. it will remove the water and, clean out the fuel system.

Anonymous

  • 957 Answers
  • Posted on Apr 17, 2010

SOURCE: car runs fine when cold, when warm it stalls

My first guess is a vacuum leak or maybe a defective IAC. Tests need to be run to narrow the search down.

Testimonial: "Was bad egr valve. had leak in diaphram."

Anonymous

  • 31 Answers
  • Posted on May 11, 2010

SOURCE: MY 1990 5.7 CAMARO RUNS FINE COLD,AS SOON AS IT

head gasket?

cansmo

Reynaldo Andico

  • 2431 Answers
  • Posted on Mar 10, 2012

SOURCE: 1990 1500 runs good when cold but when it warms up rough idle then stalls

Remove the EGR you have carbon,that is keeping the pintle open,if there is no carbon and the pintle is open replace it.

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When the engine warms up the engine computer goes into closed loop mode and relies primarily on the O2 sensors and the MAF sensor to calculate the correct fuel to air mixture - if one of the O2 sensors is fouled or the MAF sensor is not working properly, this can cause the problem.
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I need to get a clear mental picture of what exactly is happening.

With this said, you stated that the car "runs fine" until warmed up.

Q: When you start the car when cold it idles fine?
Q: If you allow the car to idle until "fully" warmed does the car stall?
Q: As the car begins to warm up, Does the RPM fluctuate abnormally?
Q: Does the car Only stall when you press on the gas pedal or does it stall just sitting and idling in addition to pressing the gas pedal?
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Car spudders when i put in gear

This is water in your fuel lines. when it was very cold, the water in the lines froze. when it melts, it runs to the injector system and causes these types of things to happen during acceleration. i would pick up some techtron. ths is good stuff. it will remove the water and, clean out the fuel system.
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