RepairPal is your advocate for car care advice and guidance

Q: tachymeter needle jumps around then falls to zero and check engine light comes on on 1992 Ford Thunderbird SC

I have replaced the cam sensor and the problem still happens. The engine does not miss when this happens and the tachymeter needle comes back in about 5 seconds and the check engine light goes out.
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
I believe, if I'm not mistaken, the the signal for the tach comes from the coil, goes thrugh the TFI (ignition) module, and to the instrument cluster.

You could have an intermittent loose connection issue, or a component failure.
Didn't find what you were looking for?