Hi Porkface,

Not a Cam sensor, I meant crank sensor.
I understand the Crank position and engine RPM signals from the CPS.
You can test it to see if it works, but the CPS harness needs better RF shielding especially with old ECU's. The RF can be generated locally by the HV ignition and alternator, or it can come from anywhere.
I think you're a career auto tech, I wonder how many CPS you've junked due to
lousy harness shielding and/or a corrosion problem with the connector.
You probably found after market CPS way less reliable for a reason.
Probably Bougicord uses better shielded wire than other CPS?
Is it braided copper as used in mike cables and RF transmission line or
is it cheesy aluminum foil like the stuff I found in two samples.

Look up EMI shielding and see the wide variety of options available.
There's aluminum tape that you can wrap the CPS harness, but that wont
work over the connectors.

I found a 240 ABS service bulletin that managed some ABS problem by re routing
the ABS harness near the fender, certainly dealing with EMI. Adding snap ferrites might have fixed that. Ferrites come in a variety of mixes that
are designed for certain frequencies. But you can use any cheap ferrite to see if you're on the right track or not. I ordered a pair of 5MM snap ferrites from
China for about $1.50 economy, slow boat shipping. Find a pack of 10 5MM snap ferrites for maybe $10 shipped from USA at Ebay

I'm looking forward to AG's results with his issue.

Whats your email?

Keep cool, Bill