jvecchione wrote:
Is there anything else I can try to diagnose this?
Short of having an oscilloscope to test the CPS signal and if you did not get any DTC's when using a scanner, no.
The CPS are known for going bad and not producing a signal as they go through the heat up cycle of the engine.
Some have put a ohm meter on the signal pins and put the CPS in a pot of water and heat the water on a stove and monitor the signal to see if it looses continuity as it goes thought a heat up cycle.
They don't always set a DTC when they go bad either, so you cannot depend on that as a true indicator.
When mine was going bad back many years ago, it put me on the side of the road twice and never set any DTCs. I had to set there until it cooled off and allowed the engine to restart.
Best to just replace it, and it is much easier to access it from underneath the vehicle if you can get on a lift or drive up ramps.
If you have to jack it up, be SURE and use jack stands and do it safely. See picture 2 below.
Autozone can provide you with the OEM Bosch CPS in their "reboxed" Duralast line; that is where I purchased mine about 10 years ago.
Duralast Crankshaft Position Sensor Part #SU8492
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