64chevy Posted September 30, 2010 Share Posted September 30, 2010 How do I check and clean the IAC & EGR on a 1989 4.0? Link to comment Share on other sites More sharing options...
HOrnbrod Posted September 30, 2010 Share Posted September 30, 2010 http://www.lunghd.com/Tech_Articles/Engine/Basic_Sensors_Diagnostics.htm Link to comment Share on other sites More sharing options...
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