I have a Porsche 944 1984. The sppedo stopped working and having changed both speedo and cable it worked for a few miles and then stopped. I have checked both speedo and cable and they are fine, replaced with original as this was OK and again worked for a few miles and then stopped. Help>>>Any ideas???
Might be the sensor on the gearbox that is faulty or wire is damaged and going to earth.
Testimonial: "Hi Thanks, but its a 1984 Porsche 944 with speedo cable (mid 1985 they put in the sensor)to left front wheel (Like VW Beetle)no sensor or anything -all mechanical. It must be something simple (like me) but can't find any problems, all cable and fittings seem perfect. Can only think it might be something in the hub itself - but not sure what should be in there.... "
SOURCE: focus speedo fault
a speedo problem,take dash out ,spray it with wd40 and it will last a bit longer,but you will end up having a new one,if its still under warranty take it back
SOURCE: Need to replace speedo cable in my 91 Festiva
I would go to a salvage yard or an auto parts place and look at one because it sounds like the gear on one end of your speedo cable came off and then all you have to do is get the complete cable and it comes with instructions which end goes to wheel and which end to transmission but if you cannot find that end more then likely it is in the bottom of the transmission pan
SOURCE: speedometer erratic/intermittent
I don't know what is causing this problem, but I know phil140701's answer is completely wrong on two counts. First, 740 Volvos starting at least in 1986 have electronic speedometers and no cable. There is an electronic sensor on the differential which sends a signal to the speedometer cluster. Second, if it were strictly mechanical with a cable then the voltage regulator could have no effect on it at all.
SOURCE: Broken Speedometer on my '84 S-10.
HI. If your speedometer needle doesn't move, or if it flutters, your speedometer cable may be bad.
To determine if it is the cable, disconnect the cable casing from the transmission and from the back of the speedometer on the instrument panel. Draw the cable out from inside of the casing. The cable looks like a twisted piece or wire. If the cable is broken or if it is dry or brittle. It probably needs to be replaced. If the cable is intact and the same length as the cable casing, the problem is likely the speedometer head.
I would also advise to check the speedometer gear as well.
The speedometer gear is located on the output shaft. Inspect it for damage.
This gear rarely suffers damage because the gear from the speedometer that meshes with it is usually made of a softer material. Sometimes, the speedometer gear on the main-shaft is replaceable. A clip can hold it in place or it can be a pressed fit. A special puller is available to pull these gears on the car.
Testimonial: "I suspected this was my only option to suss out the problem but I was hoping there was an easier answer."
SOURCE: 1995 ford taurus no speedometer, abs light, won't shift correctly
speed sensor needs replaced
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