Sad to report after leaving my sub harnesses in vinegar and picking up a used one, they made no change. Tried all 4 combinations and cyl. 1 & 2 still nothing. Good news is all 4 PTU's and sub harnesses are free of corrosion now and all work fine (or my luck they may all be bad idk). But with this sad reality I am lost now on what it could be. I have yet to try adjusting the CAS. Got home too late. So what do you guys think at this point?