Tachometer issue (1 Viewer)

Joined
Aug 24, 2008
Messages
72
Location
Nashville TN
I noticed the other day while driving home that my tach needle was jumping all over the place. Was cruising at 65mph at about 2200 RPM. The needle was was jumping up or down between 100 and 500 RPMs from 2200 RPM. It was cold and raining at the time not sure if that makes a difference. Any ideas?

Thanks
 
Joined
Jan 13, 2005
Messages
1,779
Location
Boise ID
 
 
 
Mine does this on occasion I was thinking it was the ground wire? Anybody know were that is?
 
Joined
Jul 11, 2008
Messages
42
Location
Nashville Tennessee
Mine also seems to stick from time to time, usually when at idle. The engine is idling smoothly but the tach needle jumps from 250 to 650 and back. Seems to only happen when the weather is cold.
 
Joined
Aug 24, 2008
Messages
72
Location
Nashville TN
I guess the consensus is old age and cold weather! My 80 falls into both categories. I am not really to concerned about it the motor still runs fine. :beer:
 

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