I have a 1991 Ford Mustang GT Conv. I changed the cluster since the gas guage and the temp guage were not working, and the speedometer was jumping. The gas and temp guages are working now but the speedometer is still jumping all-over. What is the problem?
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Re: I have a 1991 Ford Mustang GT speedo problem
Check the cable for the speedometer at the interconect. the cable is loose somewhere along the length of the cable. one back of he meter, 2, interconnect. 3, transmission case.
make sure the inner cable is square not rounded. if os, you need a new cable.
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Sounds like you need a new car.
With joking aside, the problem with your speedo, tach, gas guage, temp gauge and odometer can probably be one of two things. Check your fuses. If they are fine you may need to replace your cluster panel. I had to have the entire thing changed over my speedo not working right. It was not cheap. You might want to check the relay box under the hood. Does your transmission leak? Check the fuses and relay on it also. Get a new ignition switch and replace the old one if your key is stuck. You can try WD40 on that key but don't expect any miracles. The bearings are likely shot. Sorry I posted all of this bad news. Good luck.
That Cluster will work But, You will have to get an Installation kit if you want the Tach to work. Everything else will hook up the Same. You have a Distribution Box (Fuse Box) Under the Hood on the Drivers Side, There is a Fuse in it for the Speedo. Inside the Cover to the Box is the Fuse Diagram or in the Back of the Owners Manual.