More car problems

[Nismo_Freak]

I got a rolling noise which I believe is the timing chain making racket. The screw on my ECU for some reason now turns in full 360 degree circles instead of stopping. And no I didnt force it. Its a real pain in the *** to get it in gear in the morning, I believe this is due to dirty transmission fluid. I still have a CEL, and no way to check the codes. It should just be the purge valve on the charcoal canister.

Dr. John do you think its possible to go from a 96 OBDII Manual CA Emissions ECU to a Jim Wolf Tuned 95 Automatic OBDI ECU? Also what are the symptoms of the timing chain being loose?