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Unicornscort
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When I am driving mostly on highway but it pretty much can happen anytime the speedometer is screeching or chirping and bouncing all over the place.Would it be the cable,cluster or something else?Any help would be appriciated. Thanks
 

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jacobsmom99 said:
When I am driving mostly on highway but it pretty much can happen anytime the speedometer is screeching or chirping and bouncing all over the place.Would it be the cable,cluster or something else?Any help would be appriciated. Thanks
This is caused by worn bushings in the speedometer head. A speedometer repair shop should be able to rebuild your speedo head.

OTOH, I have had fair results with sneaking a bit of gear oil onto the shaft and letting it ooze into the worn bushing.

If you have the speedometer head out of the cluster and look into it from the side, behind the numbered face panel, you'll see a can-shaped piece of metal on a shaft that connects to the speedometer cable. The bushing that the shaft rides in is the one that wears out. This can-shaped metal bit spins, and the drag from the two magnets attached to the speedo needle's shaft causes the speedo needle to push against the spring and indicate your speed. When the bushing wears out, the can rubs slightly against the magnets, causing much better coupling between the speedo cable and the speedo needle, making the needle vastly exaggerate the car's speed, as well as accounting for the intermittent dentist's drill noises emanating from the dash when it's acting up....

On my first attempt at fixing it, I used WD40, which lasted a couple weeks before drying up. Then I tried gear oil, which is much thicker. It didn't totally fix it, but it instead of jumping around, wildly exaggerating the car's speed, it just wobbles a bit. I have a tachometer, so this has been "good enough" of a fix to satisfy me. The next time I have the cluster apart (which will be soon, since I need to put a new bulb in the high-beam indicator), I'm going to try to shove a little heavy grease in that bushing, which may yield better results.

Getting the speedometer cable loose can be a bit tricky, but is not difficult. It is one of several little tasks on the Escort where it helps to be left-handed or at least moderately dexterous with the left hand. I'm not lefty, but I've played guitar for years, so my left hand dexterity is a bit better than the average Joe.... I find it much easier to reach under the dash and disconnect the speedo cable if the steering column is dropped (easy--four bolts with 12mm heads) to allow better access to the back of the cluster.

HTH!

C ya,
Dutch
 
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