Mike386 Posted March 17, 2005 Share Posted March 17, 2005 I just finished putting in an '85 XT MPFI Engine into my '88 GL WGN (spfi - engine died). The problem I'm having is with the idle after warm up. When I start the engine cold, it goes to high idle just fine and runs smooth. But when it warms up it will intermittently "flutter" and drops rpm, then tries to recover; and when I try to rev it a little it will "flutter" until the rpm get way up. Do I have a vacuum problem or a sensor issue? Help! Quote Link to comment Share on other sites More sharing options...
NoahDL88 Posted March 17, 2005 Share Posted March 17, 2005 it could be vacuum or it could also be the idle air control valve, its the gizmo on top of the thermostat Quote Link to comment Share on other sites More sharing options...
GLCraig Posted March 17, 2005 Share Posted March 17, 2005 it could be the MAF too Quote Link to comment Share on other sites More sharing options...
Mike386 Posted March 17, 2005 Author Share Posted March 17, 2005 Thanks for the response, I'll check it out tomorrow. -Mike it could be the MAF too Quote Link to comment Share on other sites More sharing options...
phishy75 Posted March 17, 2005 Share Posted March 17, 2005 could be any of the suggested... MAF or vacuum leak (not mutually exclusive either) would be my guess. Try pulling codes and see what you get. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.