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-   -   tach problem (http://forums.pelicanparts.com/porsche-911-technical-forum/880051-tach-problem.html)

Boydskyking 08-22-2015 05:14 PM
tach problem
 
I have a 1980 911 that has a problem thats driving me nuts. When I turn the key on the tach moves uo to about 1100 to 1500 rpms and the engine is not running. I have unpluged the ignition box and it goes away. I have checked the ground for the box(its good) Changed the box( I have a new rebuilt box) still the same thing. Does anybody have any ideas what is the problem. I appricate any suggestions. Thanks guys

Bob Kontak 08-22-2015 07:01 PM
Check the ground for the tach. On the gauge and then where it terminates.

Reiver 08-22-2015 07:20 PM
^^^
The vast majority of gauge issues are simply mild corrosion at the connections...it's 35 years old.


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