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Rough idle

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by KILLERK5, Feb 15, 2003.

  1. KILLERK5

    KILLERK5 1/2 ton status

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    I started my truck one morning last week when the temperature was below zero. It had trouble running and it kept dying. I thought it was just from the cold weather, but it hasn't stopped. If I don't give it gas it will die, but it will run after a couple of seconds. The exhaust smells like gas now as well. I don't know what the problem is. Please Help!!

    Thanks in advance!!
     
  2. tmaxxer9

    tmaxxer9 1/2 ton status

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    Ok as everyone here knows, I am no expert, but have you tried to raise the idle a little bit yet??
     
  3. k20

    k20 3/4 ton status

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    You got TBI right? Have you checked for codes? Could be a IAC or a Temperature sensor, those two things did that to me when it got down to teens in december.
     
  4. dyeager535

    dyeager535 1 ton status Premium Member

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    Believe you could also have an issue with the ECM temp sender circuit. If the ECM "thinks" the engine is warm, it will try and idle the engine like its warm.

    Scantool is a big help if you can justify it. Run about $150, if you start replacing parts blindly, you'll get there in a hurry.

    You can clean the IAC too, sometimes they get sticky apparently.
     

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