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post #1 of 3 (permalink) Old 12-08-2006, 10:49 AM Thread Starter
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Speedometer Died

So heres the story, on my way to Ocala my battery died (basically exploded) and sent a surge through my electrical system. When it happened all my lights came on in the info center, the windshield wipers went crazy and the speedo read 0. Since then my speedometer hasn't worked and I dont have the slightest idea of what could be wrong. So maybe yall have some ideas? Before this my speedometer used to jump, so hopefully we can fix that while were at it. Big thanks!

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post #2 of 3 (permalink) Old 12-13-2006, 11:12 AM
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Quite possible the surge fried your speed sensor. As long as everything elce works fine that is where I would start and as long a everything elce is ok your PCM is probably OK. The speed sensor is located on the drivers side near the rear of the tranny. It has an electrical plug in connector on it.

As far as the speedo bounce that could be caused by the speedo drive gear. That gear is held in place and tight by two spacers, one on either side of it, inside the tranny. You will need to drop the drive line and tighten the nut that holds the rear tranny yoke in place. This nut needs to be TIGHT, it is the only thing that keeps the speedo drive gear from moving. I have seen cases where less than a 1/4 of a inch makes the difference.

I just remembered - the PCM is located on the inside of the drivers side front fender - behind the battery. It might be a good idea to make sure that the wiring harnes that plugs into it is OK.

Good luck

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Last edited by Bob Beauchaine; 12-13-2006 at 06:04 PM.
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post #3 of 3 (permalink) Old 12-15-2006, 06:35 AM
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I hope that it is a bad connection, for you; as I recall on my 93 it's white-orange stripe to the speed sensor: fortunately a repalcement is easily found and relatively cheap if it needs replacing. We'll hope it didn't fry one circuit in the PCM. Let us know how it goes.
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