On cars with an electronically controlled transmission, the answer is yes. The transmission may not shift properly.
Nope, bet it was the other way around... Your speedometer stopped working and your check engine light came on. A broken speedometer (don't know what car so I can't pinpoint it) will cause a whole bunch of codes.
Your speedometer may have failed, or the speedometer cable that connects to the transmission, or the plastic gear in the transmission may be broken.
Check the sensor that is attached to the transmission. The other possibility is that the motor inside of the speedometer is broken. That happened to me on my 93 Wrangler. Went to the junkyard and got another instrument cluster.
If both speedometer and odometer do not work, usually the pulse signal are missing. E.g. the wiring coming from the rear differential where the sensor is located, can be deteriorated (broken or shorted). If speedometer only is inoperative, it is easiest to change the whole speedometer. To repair it, you need to be able to work on electronics, disassemble the speedometer unit, access the printed circuit board, and usually replace the leaking electrolytic capacitors on that board, as well as clean the circuit board of the electrolyte. Some other components may be broken also.
The speedometer is on the dash like any other car....
you need to change the speedometer cause if your odometer is counting then speedometer should be working too. make sure your speed gear its working its in the side of the transmission The odometer and speedometer read off of the same signal. If one works, the signal is ok and the other gauge is bad.
you cant you basically have to go and get one from a junk yard because I have a 97 Jetta and thatsw what I did because there was no other way to replace it.
speedometer is not working 91 astro van other instruments are
There is no speedometer cable on a 1995 caravan. it is done by a speed sensor on the transmission and digtal data is sent to the computer and the computer then sends the signal to the speedometer. This is the case even when the speedometer looks analog. Likely a bad speedometer is the cause if it does not move as the speed sensor is used for other functions and would trip the "check engine" light if it was bad. the speedometer is part of the instrument cluster and likely you would need to change the whole thing.
Speedometer cable (most common) Speedometer head Gear on transmission end of speedometer cable
One end at the speedometer head The other at the side of transmission
One end attached to the speedometer head The other attached to the speed sensor at the transmission