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1978 Tach problem

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Old Jul 22, 2008 | 05:08 PM
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Default 1978 Tach problem

I've owned my 78 anniversary year vette for 16 years and it's a fantastic automobile. Recently my tach started reading between five and ten thousand RPMs higher than normal. Does anyone know the cause/cure.
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Old Jul 22, 2008 | 07:27 PM
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Originally Posted by art furtado
I've owned my 78 anniversary year vette for 16 years and it's a fantastic automobile. Recently my tach started reading between five and ten thousand RPMs higher than normal. Does anyone know the cause/cure.
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Bypass the filter at the dist. and see if that helps.(Plug your tach wire directly into the dist and dont run it through the condenser or filter that is on the manifold.)
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Old Jul 22, 2008 | 07:35 PM
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Perhaps this thread can help.

http://forums.corvetteforum.com/show....php?t=1999457
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