Depends on the year of the Tracer. You need to figure out if it's the gauge or the cable gone bad. You'll need to remove the whole dash area, which is a royal pain. Remove the speedo cluster, and try moving the car (only a few feet!) to see if the cable that goes into the speedo is spinning. If it isn't, the cable is broken, or the tranny sensor is stripped. If it is, then it's the gauge that needs to be replaced. Sometimes you can find used speedo gauges used on eBay or the likes, otherwise expect the pay hundreds for it! There's also a place online that will rebuild it, you could also try that.
Purchase a Hanes Auto Repair manual for the 1999 Mercury Tracer
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.
Broken tooth in speedometer head. Replace speedometer head
The fuel pump relay for a 1988 Mercury Tracer is located under the center of the dash, and hidden by the carpet. There are websites that have the repair manual for a 1988 Mercury Tracer available to download, either free or for a small charge.
you can't repair the speedometer. You will need to spend 200-300 for new cluster gage
First check the speedometer cable going into the top of the transmission. If it is not broken the instrument cluster must be replaced.
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.
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.
if it's the speedometer cable you just unhook the cable from in back of the speedometer head in the dash by unscrewing it and taking it off and on the transmission it also unscrews and then just pull the complete cable out and replace with a new cable.
Get yourself a Haynes Ford Escorty & Mercury Tracer 1991 thru 2000, all models repair manual. You can pick a copy up at advance auto parts for $17. You'll find any and all of your questions answered there. Get yourself a Haynes Ford Escorty & Mercury Tracer 1991 thru 2000, all models repair manual. You can pick a copy up at advance auto parts for $17. You'll find any and all of your questions answered there.
Stepper motor for speedometer has a broken gear in it, causing unpredictable operation. If the odometer is still working, then the speed sensor is OK. Instrument cluster needs repair.
I'd suggest you take the car to a speedometer repair specialist. They can remove, repair and calibrate the spedometer.