You all wont beleive this but my buddy told me to tap on the maf and it worked the car is now sitting and idling at 900 rpms what the hell!!!!!!!!!!!!!!!!!!

Thank you!!!!!!!!!!!!!!! i will try and get a scanner and send you the logs.

I have no check engine light that comes on either.

I will have to find a scanner then or is there a way to do it without a scanner ?

So i need to get rid of this msd then....

I just put a new msd opti and water pump on my 1994 lt1. When I start up it will idle normal for about 45 seconds and then the rpms will fluctuate between 1,500 and 2,000 rpm and seems to miss some....

I just put a new msd opti and water pump on my 1994 lt1. When I start up it will idle normal for about 45 seconds and then the rpms will fluctuate between 1,500 and 2,000 rpm and seems to miss some....