No start Cranks MS3 Pro PNP won't sync RPMs


New Member
1987 Grand National in a sand car. We've literally bought all the new parts you could suggest for this thing. It will not start. Everything on the no start tree checks out. Car should run. Only thing I can figure is the RPMs aren't syncing on the computer. Occasionally they will but not for long. They seem to be intermittent on the tach. I have the CCCI Sensor tester and everything looks good on it so I don't know why the signal isn't getting to the ECM. Wired look fine too