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1988 caprice missfire under load

Discussion in 'Other Rides' started by downtime2nite, Apr 15, 2002.

  1. downtime2nite

    downtime2nite Registered Member

    Joined:
    Jan 13, 2002
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    Location:
    washington state
    any idea's ? rebuilt carb, runs good, out on the freeway starts missing and jerking in fourth gear. worse with defroster on
     
  2. lowlevell

    lowlevell 1/2 ton status

    Joined:
    Jun 27, 2000
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    Location:
    Central Ohio, USA
    When your defroster (front heater control) is on, your a/c compressor is "running". This means your engines is under even more of a load. Check your timing first. Since your car is an 88' GM made car, you can pick up the Hanes computer code manual for around $15.00. This will show you how to retrieve codes from your car computer, very easy to do. Also, i hate to say it but, check Fuel filter and fuel pump, pump may have a tear in it... GL
     

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