LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Miss idle in drive standstill

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Old Jul 19, 2007 | 02:09 PM
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onyxblackz28's Avatar
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Joined: Jun 2002
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From: TX
Miss idle in drive standstill

I changed plugs about a week ago. When I started the car it began missfiring I moved some of the wires around and got it to calm down a bit. Then I regapped the plugs to .35 it runs good everywhere else in the RPM range it just has a small miss at idle in drive when stopped. I suspect it is a plugwire or plug problem. Scanned the car this morning and got no trouble codes. I have a data log from freescan. It starts at idle in park then I shifted into drive and I let it miss a few times while the log was being recoreded. I dont know what "out of spec" readings for the sensor values are so if someone could point me in the right direction or take a look at the log I would appreciate it. Problem seems to be on the driver side bank. I am running a delteq unit, it is getting a good signal and the coils seem to be in good shape. Car has never had a pcm tune.

Data log
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