I have a 94 vigor in my shop.. It throw engine code 9 (crank/TDC/Cam sensor) I replaced the sensor due to it failing the resistance test.. The new sensor is good.. (650-850 ohms) I tested all the wiring harness from the sensor to the ecm for continuity to ground and the end of the harness.. Everything is fine! I borrowed a known good ecm from a friend, and the same problem occurs. I found a TSB that said it was a possible false code due to a faulty diode in the alternator.. That also is not the problem.
The car cranks all the time but does not always start. When it does start, the idle jumps consistantly from 800 to 3000 rpms.. up down up down..
WHAT AM I MISSING???
Any help would be greatly appreciated
Cavillac