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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

I have to keep my foot on the brake and give it a little gas while in gear to keep it running. On a cold start, like first thing in the morning, it starts up and runs perfect until it warms up, then the problem occurs, any idea?

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  • Cars & Trucks Master
  • 16,243 Answers

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.

Posted on Apr 29, 2017

Testimonial: "Okay, also it ran fine until it sat for 6-7 months, now has this problem"

  • 3 more comments 
  • Jason stein
    Jason stein Apr 29, 2017

    Okay, also it ran fine until it sat for 6-7 months, now this is happening

  • Brad Brown Apr 29, 2017

    I have seen the ground connections just come loose or get corroded. No rhyme or reason to it..

  • Jason stein
    Jason stein Apr 29, 2017

    Okay, I'll check, are the grounds by the ECU box under the toe kick panel

  • Jason stein
    Jason stein Apr 29, 2017

    I can't find them

  • Brad Brown Apr 29, 2017

    The ECM is on the right vertical panel just in front of the passenger door.

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