The tach in my 1980 Chevy El Camino reads high. I have no idea what the schematic looks like, but I assume there's probably an RC network that could be tweaked.

Anyone know?

 

For a four cylinder car, 3000 RPM is 50Hz, 3600 RPM is a 60Hz signal input into the pickup.



Failing that this thread will prob be closed due to Automotive Violation.!!!

 

Thanks. It's a V8..

 

Hello,

I am closing this thread as it violates AAC policy and/or safety issues.

Quote:
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There will be enough sites where automotive questions can be discussed :
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Bertus