if you have changed the tires to a different size than what was factory size this will throw the speedo out if your car is computerized this can be corrected at mechanic shop if tires are not the problem and no computer, i would say it is more likely to be the speedo head or the actual speedo cable
I have the same problem; so far the problem seems to be in the transmission. Maybe the gear that drives the speedometer gear, won't know without taking transmission apart.
Having the speedometer jump and the engine stall in the 1994 Jeep Grand Cherokee Laredo could be a problem with the idle and the transmission. The transmission slipping can cause the speedometer to jump.
Had the same problem off and on in my 1999 Taurus. The speedometer needs to be replaced. The problem is in the speedometer and not the transmission like I was initially led to believe. My mechanic said it wasn't that big of a repair.Coincidentally, the vehicle speed sensor feeds information to both the speedometer and the transmission....See "Related Questions" below for more
If it is a stock model speedometer, there is no speedometer cable. there is a sensor on the transmission which transmits signals in a wire to the speedometer assembly, which is on your dashboard. If you have a problem check the speed sensor, or the wiring to it. JOEDI
Speed sensor on rear of transmission where speedometer drive used to be. If ecm receives no speed data transmission, it will send no shift signal.
according to the owners manual this could be related to a problem with the ABS. I have the same problem and am looking for a diy solution. also from the owners manual the ABS controls the transmission , and my transmission is shifting roughly, which is what I noticed before I noticed that the speedometer wasn't working.
check to see if thers a speed sensor unit failure from the transmission.. Had this problem on a Caddy
The VSS (Vehicle Speed Sensor) is located on the transmission. If the speedometer is not working, it is rarely the VSS causing the problem. I would first check fuses and the ECU
Its probably the vehicle speed sensor located on the transmission. Mine had that problem
well that's not to hard to answer. my truck did the same thing i replace the speedometer cable and sensor in the transmission and i never had that problem since. try that first and see what happens if that wont work then replace the speedometer panel in the dashboard.
Have your mechanic check the speedometer cable connections. They no longer use a cable. It is electronic. If the speedometer is not working but the odometer is, the problem is in the dash cluster. If both the speedometer and odometer are not working, the speed sensor in the transmission may be at fault.
If both the speedometer and the odometer do not work I would suspect the VSS (Vehicle Speed Sensor) located on the tail shaft of the transmission is at fault. If only the speedometer doesn't work it's probably a problem with the dash cluster.