If speedometer working--probably needs new head or repair If speedometer not working could be a bad cable
When it comes to calibrating your speedometer, most auto repair shops can handle just about any car. With that being said, I would try to contact an auto repair shop in your area and ask them about receiving a speedometer calibration.
Need to figure out what's wrong with them, first.
There are several things you can do to repair your speedometer. You can replace the speedometer cable. You can replace the speed sensor in the transmission.
According to my Chilton's Auto Repair Manual : A 1991 Ford Mustang has a ( 15.4 U.S. gallon gas tank )
There is no particular class in order to repair a ford mustang. If the mechanic have the experience then they are able to repair the vintage Ford Mustang.
The speedometer itself will work but you will need to take the instrument cluster apart and transplant the speedometer unit from the 92 cluster into the 87 cluster. The speedo mechanism is the same but the clusters are different.
The best way is to buy a book on your model and see if you can do it. Then! Ask again on this sight for help when you feel confident that you know what your doing to repair the speedometer.
A Mustang Cobra;s Speedometer tops out at 160 MPH. But have been known to exceed that.
I'd suggest you take the car to a speedometer repair specialist. They can remove, repair and calibrate the spedometer.
Go to your local mechanic
If the speedometer and abs light are not working then you have a speed sensor problem. If the speedometer or odometer are not working then you will need to take it to the dealership and have them send it off for repair.
Loose or failing speedometer cable Speedometer head needs repair
Send to a speedometer repair shop or replace speedometer head
A brake repair for a 2004 Ford Mustang costs about $1500.
If the speedometer is not working it probably needs a new speedometer cable. If the speedometer is actually broken either take it to as speedometer repair shop or replace it.
The speedometer is cable driven.
check the wiring to the speedometer. Check the sending unit as well. If the problem is internal then the speedometer will have to be replaced.
Speedometers have to be repaired by an authorized repair shop.
The speedometer doesn't work. It doesn't respond to the speed we are going.
May have to take the truck to a certified speedometer repair shop
May have to take it to a certified speedometer repair shop
To repair the speedometer on the 2003 Suburban, first check to see what is causing the malfunction. You might need to replace a fuse or even the cable.
A 1991 dodge dynasty speedometer bouncing could be a sticking speedometer cable, or a bad drive gear. Check the cable first, and lubricate it to see if the problem stops.