U need a new speedometer cable. It runs from the transmission to the speedometer. They tend to break in half or just seize up after they get so old. They are easy to replace, it takes to people to do it but it is really easy to do. I hope I helped you.
To change the speedometer and odometer cable on a 1988 Toyota Camry LE, first, disconnect the negative battery terminal and remove the instrument panel by unscrewing the necessary screws. Once the panel is out, locate the speedometer cable at the back and unscrew it from the speedometer. Next, detach the cable from the transmission by unscrewing it, replace it with a new cable, and then reassemble the instrument panel and reconnect the battery. Make sure to test the speedometer and odometer after installation to ensure they are functioning correctly.
The odometer's gears are wearing out. For more information go to http://cabby-info.com/gauges.htm#odometer .
PROBABLY one of the little tiny itty bitty gears has stripped
The odometer on a 1988 GMC may not work due to a few common issues, such as a broken speedometer cable, a faulty speedometer gear, or problems with the instrument cluster itself. Additionally, worn gears or a malfunctioning electronic component in the odometer mechanism can cause it to fail. Checking these components can help identify the specific cause of the problem. Regular maintenance or inspection may prevent such issues from occurring.
Good question. BUT in most states it is illegal to change the odometer on a motor vehicle.
If your 1988 Mark VII shows a speed of 85 mph and the odometer is still adding miles while in park, it suggests a malfunctioning speedometer or odometer. Typically, the speedometer should not register speed or add mileage when the vehicle is stationary. This could be due to a faulty speed sensor, a wiring issue, or a problem with the instrument cluster. It's advisable to have the vehicle inspected by a qualified mechanic to diagnose and fix the issue.
Your 1988 Nissan 300 speedometer cable is held in place with swivel nuts on each end of the speedometer cable. Turn the swivel nuts to the left. The speedometer cable will come off. Reverse the process to install your new speedometer cable.
One end at the speedometer head The other at the side of transmission
On a 1988 Chevrolet C1500, the speedometer buffer, also known as the speedometer gear or speed sensor, is typically located on the transmission. Specifically, it is found at the tail end of the transmission, where it connects to the speedometer cable. This component is responsible for converting the rotational speed of the transmission into a speed reading for the speedometer.
First I would try replacing the cable(s). If that didn't work, I would try replacing the gauges themselves. Good luck!! :^) The odometer/speedometer are not cable driven, they are electronic from 1986-1993. There are two small plastic gears in the gauge itself that become old and brittle. When they lose a gear tooth, the gauge will stop registering. The gears are available through Ebay sellers and several online vendors. The speedometer uses an electronic sensor on the rear differential. It could be anything from the sensor, wiring or the gauge itself. The odometer may be related. If the speedo won't go, obviously the odo won't either. There is an odo kit available from IPD.
The main reason that a speedometer and odometer will stop is because the speed sensor, located on the back top area of the transmission, has gone faulty. The part can be had very easily at any auto parts store, or junkyard. The reason the check engine light is on is because the speed sensor signal goes thru the ECM (computer) for the car to run the different things. If the signal is intermitent, or interupted, the light is set, as well as the speedo and odometer not working.Another reason is that the ECM it's self is bad, you can locate the ECM behind the glovebox and give it a few knocks while the car is running, if your engine responds by cutting out (even just a little) then replace it. they are around $110.Since there is no speedo cable, it must be an electrical issue with a sensor.QuestionWhy is there no speedometer cable? Does it have digital gauges?The reason I ask, is, when I first got my 1986 Celebrity, the speedometer and odometer did not work. The previous owner had bought a new speed sensor, but had not had it put in yet. I installed it first thing. no luck. In checking the speedometer cable, I found it was broken, (the end of the cable at the tans-axle). After I replaced the speedometer cable, it worked fine.Now, I cannot imaging gm did away with speedometer cables in the two years before the 1988 came out. I do have a 1990 S-15 with digital gauges, and I know it does not have a speedometer cable. But, the 1990 Sunbird I used to own, with analog gauges, did have one.
They don't allow pasting pictures in here. The speedometer cable goes from the transfer case to the speedometer.