Here's a weird Tach problem!!! - Team Camaro Tech
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post #1 of 3 (permalink) Old Sep 4th, 09, 05:35 PM Thread Starter
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Here's a weird Tach problem!!!

Okay so I have been having trouble with a factory repro tach in the gauge carrier. It works, it doesn't, etc... So I hooked it directly to the battery and neg coil post out of the carrier - it works. I started piecing it together, testing it along the way with my wife and once I screwed it into the carrier - no workee.

To cut to the chase, after much troubleshooting, we narrowed it doen to when the metal backing of the tach connects with the gauge carrier, it stops being grounded. I shoved a piece of plastic in between the metal backing and the carrier and it works fine. Does anyone have ANY idea why this could happen?

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post #2 of 3 (permalink) Old Sep 4th, 09, 07:27 PM
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Re: Here's a weird Tach problem!!!

Apparently, the tach chassis should not be grounded. Keep it isolated and should work for a long time.

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post #3 of 3 (permalink) Old Sep 4th, 09, 07:31 PM
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Re: Here's a weird Tach problem!!!

Quote:
Originally Posted by Everett#2390 View Post
Apparently, the tach chassis should not be grounded. Keep it isolated and should work for a long time.
weird. right in this case, but not right, as the tach chassis was designed to be grounded. Still, whatever works, right?





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