95 w124 can’t shake the codes
 

Pin 8, .. 13,25,33,35 blinks. Replaced my 3rd engine harness because the cam sensor line was intermittent. Almost every sensor is new. I’m running out of ideas

Are there any evident driveability symptoms? The 13/33/35 codes are pointing me toward a vacuum leak, but I tend to overthink things sometimes. Also, I know this sounds rudimentary, but make sure to clear the codes and see which ones come back.

Best Regards,
Rob

Run beautiful. If it wasn’t for the light on the dash id say it runs perfect. I’ll double check the vac connectors. Gotta get this cleared up so I can smog it.

any way to supply short burst of power for light after ignition,like using a cap?

Found a vac line off. Only have the pin 8 25 blink code that won’t stay off. I’ve had that code for about 2 years. Not sure what to do about it

That's the cam sensor.

You said in your original post that you've had trouble with this and that "almost" every sensor is new, so I'm assuming that that's one of them. You also said you've replaced the engine wiring harness three times. I was getting weird codes about voltage levels being implausible and just by chance had to replace the lower engine harness (the one with the positive battery lead), after which these codes disappeared; I suggest that you check the condition of the lower harness.

Best Regards,
Rob

The lower harness is new. I have an oscilloscope but have no idea how to use it to check the output of the sensor. I’ve swapped the cam parts from my 94 to see if things change but no change. The only thing I haven’t changed was the ecu.

MAybe the ecu is fubared from the po driving for such a long time with bare wires touching everything?