From the looks of the wiring diagrams there appears to be some ground wires on the green plug that isn't utilized on the red plug PCM's but that appears to be about it.Īny help on this wiring would be appreciated or if you have had issues with this blasted idle problem. A notch on the lower edge provides safe clearance for the fuse harness to pass through. The fuse block is to be attached to a sturdy shelf on the opposite side. I have the throttle stop set where it idles a bit high when warm to get it to idle pretty quickly cold but still stalls nearly every time if I turn the AC on. These are designed to mount your Gen III LS ECM (’99-’07) directly to the bracket with hardware provided. Everything else I have tuned in and runs very strong but this idle is annoying. I know this green/blue connector PCM was primarily used with drive by wire setups and so I would like to try changing my wiring to run a red/blue plug 12200411 older PCM that was used with cable operated throttle bodies to see if I can get this thing to idle correctly. So the thing won't idle worth shit when cold and will stall darn near every time I turn the AC on as the computer seems to make no attempt to open the IAC valve to control the idle. I bought this setup complete wiring, accessories, computer the whole 9 yards and the Van setup came from the factory with cable operated throttle body but no matter what I do in the programming I can't affect the idle speed. This will be one of many videos upcoming to help with you LS/LT Swaps. In this video Matt is here to help you with all thing PCM mounting Matt has lots of information that he would like to share with you to help with any swap. How to and where to mount a PCM/ECM that is the question. While similar to molex connectors they are not the same. LS3 (58X) With 6L80E/6L90E Engine Controller Kit. its using computer service number 12583659 which uses the Green and Blue plugs. My ECM has 2 connectors, a 14 way connector and a 60 way connector. Hey guys, I swapped a 2004 LQ4 6.0L 4L80E trans setup from a 2004 Express van into my 1994 Chevy truck. Our EFI 24xand EFI 58x Product Lines bring Gen III LS1 PCM control and Gen IV LS3 ECM control to these popular engines.
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