twisted tach

dreamchaser

Petty Officer 1st Class
Joined
Aug 31, 2006
Messages
228
Hello everyone, my tach is doing all the same things that are the usual problems ie; jumps all over the map, on lower rpm it seems ok, needle zeros out when key is turned to on pos, which is good, But this one is new to me, While operating my vhf on high the needle goes round counterclockwise. it does not do it on low , My chargin system seems to be workin as the volts do rise from 12.60v up to almost 15v under light throttle. My tach reads about 1100 rpm at idle , and my digital tool tach reads about 850-950 at idle in neutral . Time for a new tach ? anybody seen this b4 .thks Leo
 
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