sgolenski

Since the DIS was mentioned, where do I find one? Super Coupe Performance? Seems to be about as available as the crank sensor.

Tach dancing is usually the DIS module or the cam sensor(which I know you already replaced),but it could've went bad.

cam sensor x 2 . Check for clean connection first .

Is the upshift light on when cranking to start? Are you able to pull codes? Are you able to attach a fuel pressure gauge to the fuel...

Doug H - DIS was replaced a few years back. I have a Motorcraft Cam senor on the shelf (NOS). I never considered the DIS. Easy swap...

89 SC has run great (within reason) for the past 34 years. Last summer the cam sensor finally died. I replaced it and drove it for a few...