Tachometer Problem

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Jul 19, 2008 | 05:22 PM

hamsteria

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Tachometer Problem

I just noticed today that my tach stays at 1500 even when the car is turned off. It won't go to zero no matter what. What do I need to do to fix it?

Thanks!

Jul 19, 2008 | 06:18 PM

Dunner

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From: Port Dover Ontario

this is normal. When I shut mine off it goes to zero then goes up to about 900-1000 rpm. I have an 81

Jul 19, 2008 | 06:30 PM

OURSHARK

Burning Brakes

Joined: Oct 2007

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From: Alcolu S.C.

You have no problem it's normal, I have an 81 also.

Jul 19, 2008 | 06:36 PM

hamsteria

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Mine's a 78. It only started doing this today. It always went to zero when I shut the car off before today.

Jul 19, 2008 | 06:40 PM

Dunner

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From: Port Dover Ontario

I don't know about 78's but possibly you may want to test the circuit board and get a new one.

Jul 19, 2008 | 07:15 PM

ACECO

Drifting

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From: Northern NJ

St. Jude Donor '04 & '05

All tachs from 75 on were electronic. On the bench if you remove the distributor/tach signal before removing the 12V power, then the tach will zero. However if the 12V power just stops regardless of what's happening w/the distributor signal, then the tach needle will just stay where it is. FWIW.

Jul 19, 2008 | 11:41 PM

65GGvert

Team Owner

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From: Kannapolis NC

If you turn the ignition on, the tach should go to zero. It doesn't matter where it goes with the switch off. When 12 volts and ground are present, it should read zero.