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Old Sep 23, 2007 | 08:44 PM
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From: parkersburg,WV
Default idle problem

i just installed my new tranny and 3000 stall and for some reason when im at a stop light my car seems to idle weird.. its idling up and down acouple hundred rpms when im just sitting and the oil pressure needle is moving a lot also.. it seems like i have a cam in it but i dont... anyone kno what would be going on thanks
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Old Sep 23, 2007 | 10:53 PM
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is it hunting for an idle speed meaning it might go to 1k rpm then fall to 500rpm then up to 800rpm then back to 500rpm when your coming to a stop. It should even out and settle to 550rpm or so(stock cam). If so you might need some tuning with the idle circuit.
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Old Sep 23, 2007 | 11:06 PM
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Since you just did work first I would recheck the work and all vacume lines towards rear of engine , But assuming a small diameter converter I have heard of a tuning issue and I am not sure at all because I am not a tuner but it has something to do with crank sensor relearn or calibration due to the lower weight of the converter.
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Old Sep 24, 2007 | 12:02 AM
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it's because you have less rotating mass... you will get a couple of misfire codes too, Im sure. You need to bump your idle up to about 750 and your surging problem will go away.
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Old Sep 24, 2007 | 03:39 AM
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i have a pcm4less tune already so should i just send it back and tell them to bump my idle up to 750
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Old Sep 24, 2007 | 11:29 AM
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yes...
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