Question about 1991 Chevrolet S-10 Blazer

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1991 chevt t10 blazer 4.3l . will not stay running uslee i unpluge the vacum line that goes the the pcv

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  • dougfetterma Sep 09, 2009

    was not driving the truck at time it started run bad. it will not run of 15 mph will not shift. have replace map snesor tps sensor vechile seep sensor idle air control valve. if you start it up with vacum hose on the nipple that is in the intake that goes to the pcv valve , inside vac assy etc. it cut off .unplug it and stays running but not driveable thanks doug

  • Samuel Charles Spriggs May 11, 2010

    Sounds like the PCV valve needs replacing. Charlie

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  • Master
  • 631 Answers

Its probably a plugged up PCV valve. Change out your PCV valve.

Posted on Sep 10, 2009

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