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'99 - '06 GM Truck Modifications
Engine & Performance
Strange idle issues with 4.8 (SOLVED)
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<blockquote data-quote="DarkNinjaSG" data-source="post: 23259" data-attributes="member: 12584"><p>So 2 days ago I changed the IAC with a cheap one off Amazon and it seems to have fixed the high idle problem as I don’t get code P0507, but it still has an RPM hang in park/neutral if I blip the throttle. Also seems like it’s accelerating a lot more in lower RPMs since replacing it. I’m thinking that the problems are the still the IAC so I’m going to put a Delphi unit it. Also tried replacing the PCV valve the day before and that didn’t seem to do anything since the old was still rattling like it should.</p></blockquote><p></p>
[QUOTE="DarkNinjaSG, post: 23259, member: 12584"] So 2 days ago I changed the IAC with a cheap one off Amazon and it seems to have fixed the high idle problem as I don’t get code P0507, but it still has an RPM hang in park/neutral if I blip the throttle. Also seems like it’s accelerating a lot more in lower RPMs since replacing it. I’m thinking that the problems are the still the IAC so I’m going to put a Delphi unit it. Also tried replacing the PCV valve the day before and that didn’t seem to do anything since the old was still rattling like it should. [/QUOTE]
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'99 - '06 GM Truck Modifications
Engine & Performance
Strange idle issues with 4.8 (SOLVED)
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