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Tach Spins Backwards

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Old Feb 6, 2004 | 12:17 PM
  #1  
HDFLH67's Avatar
HDFLH67
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Racer
 
Joined: Jan 2003
Posts: 294
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From: Rochester NY
Default Tach Spins Backwards

The tach in my '75 has actually started to spin backwards! Has anyone else actually ever seen this? People have suggested replacing the electronics board as a guess, but I hate to invest the time and money on a speculation.

Could some wiring have gotten reversed along the way somewhere?

Thanks.
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Old Feb 6, 2004 | 12:29 PM
  #2  
cell2each's Avatar
cell2each
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Joined: Sep 2003
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From: Cedar Rapids Ia
Default Re: Tach Spins Backwards (HDFLH67)

On my '76 I had a similar situation I first replaced the tach filter which did nothing then I replaced the circuit board and it works perfect now. Don't forget to zero the tach when you install the new circuit board.
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Old Feb 6, 2004 | 12:39 PM
  #3  
JOliver's Avatar
JOliver
Burning Brakes
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Default Re: Tach Spins Backwards (cell2each)

New circuit board ..Thats all there is to go wrong on it.

VetteInstruments@aol.com
Jason
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