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Jim Grant Tech Tips Jim Grant Tech Tips
A collection of helpful articles based on reader submissions
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  Jim Grant's Tech TipsJim Grant's Tech Tips
Below is a collection of Jim Grant's Tech Tips sorted by Vehicle Make. These Tech Tips were answers to questions submitted to Jim by users over the course of many years.
If you have any questions, please feel free to email us.



Lincoln - Mercury
  Jim Grant's Tech Tips

'86 Chrysler Le Baron GTS , Speed-O-Meter Problem

Q: Noisy speedo cable? I have an ‘86 Chrysler Le Baron GTS 2.2 that has a few people confused; even at the Chrysler dealership. Namely a noise coming from the dash on the driver's side. It occurs only between 60 - 90km and only in dry weather. The sound is difficult to describe. But an analogy would be when we as kids would put a piece of light cardboard on to our bicycle spokes to emulate a motor sound. This sound is not constant either when it occurs. But it is loud. Some people say it's a speedometer cable that needs a lube or replacement. But there's no fluctuation in the needle. The dealership says they'll have to pull out the dash in order to even diagnose the problem.

A: How about this approach? The speedometer cable is surprisingly easy to disconnect on the engine compartment side. How about the next time the noise starts happening (only in dry weather) you temporarily disconnect the cable to see if the noise goes away? I believe that the speedometer cable in your vehicle is a 2 piece cable. The vehicle speed sensor is mounted in between the 2 cables. If you disconnect the upper cable from the vehicle speed sensor the computer will not know the difference so the engine will perform as usual. If the noise goes away then the upper half of the cable or the speedometer head is the problem. If the noise remains then the lower cable or the vehicle speed sensor is the problem. If the cable is the problem don’t waste time trying to lube the cable. Buy a new one and get it over with, they’re not that much money.

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