My 71 442 tach is way too fast
January 27th, 2010, 11:57 PM
#2
Registered User
Join Date: Jun 2009
Location: Palm Bay, FL
Posts: 4,249
Stock tach?
There is a silver "cover" on the back. If you remove it you will find a potentiometer. That will allow you to adjust the tach. Make sure to use a known working diagnostic tach (tach & dwell meter for example) to set it.
There is a silver "cover" on the back. If you remove it you will find a potentiometer. That will allow you to adjust the tach. Make sure to use a known working diagnostic tach (tach & dwell meter for example) to set it.
January 28th, 2010, 03:14 AM
#3
Registered
Join Date: Jul 2006
Location: Northeast Ohio
Posts: 4,430
The Olds Wiki has a section with calibration, basically it's what svnt442 said.
http://www.oldsmobilewiki.com/index....ak_Tic_Toc_Tac
http://www.oldsmobilewiki.com/index....ak_Tic_Toc_Tac
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