97 speedo/tranny problem

My speedometer will suddenly drop to zero and stay there. This also causes the RPM's to act crazy or sometimes drop to zero. The car stills runs but acts like it doesn't want to shift gears. This happens at all speeds.

Any Help or pointers will be appreciated!!

Thanks

bad VSS

I'm sorry but I haven't the slightest what a VSS is. Could you spell it out for me.

Thanks

Vehicle Speed Sensor, its a sensor that plugs into the transmission. Its not terribly expensive but also not very easy to replace

Had the same problem on a 98, was the VSS and cost
about $350.00 for ford to replace it.

check the wires from the vss to the pcm if their deteriorated there,s your problem if their ok replace the vss and do a fluid and filter change