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93, 245 surging idle 200

posted by  marklar on  Fri Jan 17 20:11 CST 2014
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last visit: Tue Sep 30 05:30 CST 2014
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Hey all, long time lurker first time poster. Ive got a new to me 93, 245 w/ LH 2.4, its an awesome machine except it idles extremely rough, the best way to describe is a surging idle; it also seems like it wants to shut down when I brake. Ive done quite a bit of research which has told me first to look at the IAC, I took out the IAC and cleaned it with no real change. However I found when I disconnected the IAC harness, the surging idle ceases to a nice smooth idle; albeit the idle is a little high. My question is, with my IAC unplugged how should my engine react? Is what I experienced normal or is this an indication that my IAC is broken?
I have also checked the OBD which gives me the 232 code. Im to understand that this boils down to a vacuum leak or something like that? Can anyone confirm this?






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