Check the fuse blocks under the hood. Check the main red power wire running from the battery to the fuse block. This was my problem. It was a little lose. Take off the terminal and clean it up and put it back on. It should fix it. It fixed mine. ----
I had this exact problem in my 1999 Toyota Camry and it was a simple fix. The issue was cause by a trailer/tow light harness attached to my back brake lights. I traced the wires of the harness back to where it attached to my brake lights and removed the connections.
In my particular case the harness attached to my left brake light and had easily removed connections that clipped onto the original brake wires without splicing or cutting them. I simply had to open the plastic connector and release my original brake wire (without damaging it).
My RPM used to fluctuate at idle and when using my turn signals and that stopped immediately. Also before the fix using my right turn signal would cancel my cruise control but that went away immediately as well. ----
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.
The problem would be that the car is messed up
It is electrical. Vehicle Speed Sensor (VSS) on top of gearbox sends signal to ECU which sends signal to gauge cluster.
A short in the turn signal wiring can cause the voltage gauge to fluctuate. A loose ground wire can also cause the gauge to fluctuate.
It most likely means you have a short to ground somewhere. You don't want wires getting hot, unless you want an electrical fire. If you're not comfortable checking electrical systems, then get it checked out ASAP.
The gauge is part of the instument cluster ( the part with the speedometer ).The gauge is part of the instument cluster ( the part with the speedometer ).
why would a speedometer stop working on a Mazda
A speedometer will stop working if the gauge has failed, the wiring is loose, or the sending unit has become defective. Each component must be tested to determine the cause.
A mechanical oil gauge may bounce if you are low on oil. An electric oil gauge may bounce if the sending unit or the gauge itself is faulty and of course you are low on oil.
got the same exact problem.
A blown fuse can cause your fuel gauge and speedometer to stop working. Replace the fuse. The fuse can be found in the fuse box. The location of the fuse will be listed on the inside cover of the fuse box.
1998 Nissan Pathfinder the speedometer and heat gauge quit workin?