C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette

bad tach

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Nov 23, 2007 | 07:20 PM

markey mark

Thread Starter

Intermediate

Joined: Sep 2007

Posts: 34

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bad tach

got a bad tach in my 75. seems to start at 6,ooo and go'es backwards. does't anyone have any ideas?

Last edited by markey mark; Nov 23, 2007 at 07:23 PM.

Nov 23, 2007 | 09:19 PM

G dad

Burning Brakes

Joined: Jun 2005

Posts: 764

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From: THE OLDER I GET THE BETTER I WAS! NORTHERN ONTARIO

yup...just went through it...tach circuit board...Doc Rebuild has the best boards they are pre calibrated...about $75 bucks.

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