bottomline89 Posted December 28, 2010 Share Posted December 28, 2010 i have an 89 comanche, 4.0 |6, starts great and idles great at first.. after it warms up its wanting to idle at 2000.. it's not egr Link to comment Share on other sites More sharing options...
Mongo Posted December 28, 2010 Share Posted December 28, 2010 sounds like a bad idle solenoid, it is next to the TPS on the throttle body. Pull it and clean it before you buy another one. Link to comment Share on other sites More sharing options...
Pete M Posted December 31, 2010 Share Posted December 31, 2010 could be a vacuum leak too. one that only shows itself as the engine warms up. Link to comment Share on other sites More sharing options...
bottomline89 Posted December 31, 2010 Author Share Posted December 31, 2010 thanks guys.. it was a leak in the intake manifol gasket. i swapt it out and the truck runs great now Link to comment Share on other sites More sharing options...
Pete M Posted January 1, 2011 Share Posted January 1, 2011 :banana: Link to comment Share on other sites More sharing options...
89Tonto Posted January 2, 2011 Share Posted January 2, 2011 thanks guys.. it was a leak in the intake manifol gasket. i swapt it out and the truck runs great now Did you end up using carb cleaner/WD 40 to detect the vacuum leak? Link to comment Share on other sites More sharing options...
bottomline89 Posted January 2, 2011 Author Share Posted January 2, 2011 no.. when the engine got hot enough you could see grease boiling on the gasket, it was very obvious Link to comment Share on other sites More sharing options...
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