I have a 1997 Pontiac Firebird with the 3.8L that has a No Crank no start. diagnostics show no spark and no injector pulse. reviewing the scope of the crank and cam sensor showed poor scope pattern and replaced both cam and crank sensor with AcDelco components. When viewing the values for the 3x and 18x Crank sensor, vehicle Key on engine off (not cranking), shows a value of 68.843 RPM while the 3x sensor shows 0 RPM. Camshaft sensor signal request always shows as "YES" regardless of key on, key off, engine cranking, sensor unplugged, ect. I am trying to find an intricate diagram and values of what these sensors run off of. I know they get a reference voltage through my research on ALLDATA but cannot determine if they are supposed to be a 5v reference or what voltage reference. Vehicle has also had a VATS issue when I got it. The wire from the Lock tumbler had been cut going to the VTD. replaced with a new lock tumbler and cut proper keys to the vehicle that are within 10Ohm of the signal the VTD wants. (since I cannot get dead on with a specific key) Can anyone give some insight to a possible cause for this issue? The guy before me replaced the PCM with one out of a 1997 Malibu (That's what I pull up on my Launch scanner with the PCM connected.) and he also replaced the ICM and new Coils.
Thanks in Advance