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Horrible Idle with new Greddy

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Old Aug 16, 2008 | 09:16 PM
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Default Horrible Idle with new Greddy

I just finished my install and the car is having problems idling. I have started it and let it run a few times for about 10 minutes since resetting the battery. The problem only happens when the car is warm and the engine decelerates from anything above idle. Half the time the car will die the other half it will diesel down to 400 or 500 rpm and then continue to idle properly. The car has always had alittle trouble like this when the AC is on and it is hot outside but it never died or dieseled.

Does anybody have any suggestions.
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Old Aug 16, 2008 | 09:26 PM
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do a map wack. I had problems like that and it fixed it.
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Old Aug 16, 2008 | 09:39 PM
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yeah sounds like it might be a map sensor issue. check to make sure you installed it correctly. Check to make sure your PNP harness is fully plugged in as well.
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Old Aug 16, 2008 | 10:01 PM
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map wack for sure, also - this is a stupid question - make sure you relocated the map sensor as per instructions in the greddy manual. our sensors are a little finicky, even when they're N/A!
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Old Aug 16, 2008 | 10:05 PM
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mine did the same thing. map whack that sucker and verify vacuum lines. I also unplugged then re plugged all of the connections of the greddy & ecu harness.
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Old Aug 17, 2008 | 03:39 AM
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Try the map wack, and clean your IAC valve.
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Old Aug 17, 2008 | 02:41 PM
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Nope, not the map. I have not cleaned the IACM though and the car has 42K. I should have done it when I did the turbo or adjusted the valves.
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Old Aug 17, 2008 | 11:47 PM
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what plugs are you running and what are they gaped at?
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Old Aug 18, 2008 | 02:45 AM
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Originally Posted by TRBOKEV,Aug 18 2008, 02:47 AM
what plugs are you running and what are they gaped at?
I would be REALLY surprised if that was the issue.
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Old Aug 18, 2008 | 06:20 AM
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Not sure on the Gap they were pregapped, I will double check.
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