tach problem

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Nov 15, 2014 | 03:36 PM

kessroberts1

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4th Gear

Joined: Sep 2014

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tach problem

my 77 tach is pegged at 7000 until i put the turn signal on in witch case it does a 360 with each click of the signal any ideas thanks

Nov 15, 2014 | 06:14 PM

DUB

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Joined: Apr 2009

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From: Charlotte NC

Quote:

Originally Posted by kessroberts1

my 77 tach is pegged at 7000 until i put the turn signal on in witch case it does a 360 with each click of the signal any ideas thanks

OBVIOUS wiring issues. Needs to be investigated and having a wiring diagram is a MUST...along with other specific test tools.

DUB

Nov 16, 2014 | 09:54 AM

0Willcox Corvette

Former Vendor

Joined: Aug 2006

Posts: 76,656

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From: Jeffersonville Indiana 812-288-7103

St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15

Since the 75-77 tach was a plug up direct tach I have to go with DUB, something is spiking the tach thought the t/s circuit. I feel sure it's cooked the tach board what ever it is. But about the only way you'll find out is to tear the dash out of the car.

Willcox

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