85 Trans Am Tach Reading 2x or more Actual RPM
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From: Ohio
Car: 1987 Trans Am
Engine: 305 TPI
85 Trans Am Tach Reading 2x or more Actual RPM
Started up my freshly rebuilt 350 yesterday and the in dash tachometer was reading ~2500RPM at idle but 850 on the timing light and around 4500 at ~2000RPM on the timing light.
I've read through some threads on here but the only fix i have found is replacing the tach with another good unit or an aftermarket unit. Is there any good way to fix the stock tach or do I need to find a replacement?
I've read through some threads on here but the only fix i have found is replacing the tach with another good unit or an aftermarket unit. Is there any good way to fix the stock tach or do I need to find a replacement?
Joined: Dec 2004
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: 85 Trans Am Tach Reading 2x or more Actual RPM
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michael
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May 26, 2015 11:54 AM
RedIrocZ-28
DIY PROM
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Aug 29, 2002 06:17 PM