Alternator/Rev counter

Derek · Post by **Derek** » Sat Dec 18, 04 5:55 pm

HELP....Why is it that since i had the alternator rebuilt the rev counter does not work the way it should, if i turn on anything electrical the rev counter goes up, the more things i turn on the more the rev counter goes up, If I rev the engine the rev counter bounces all over the place it's not the rev counter as i have put a new one on. Anyone got any idea what it could be.

Pete · Post by **Pete** » Sat Dec 18, 04 6:46 pm

I always wonder about bad earths when things like that happen.

Also Autometer advised me that you can get interference on some systems that cause the tach to over-read.
In my case the motor was idling at 600 rpm but the tach registered 1200 rpm. A Snap-On RPM & stobe light proved the motor was doing 600rpm....

Good luck, this could be a hard one to track down....

Derek · Post by **Derek** » Sun Dec 19, 04 10:06 pm

Played around with it today, If I take the small wire off the back of the alternator the rev counter works fine, does this mean the alternator is at fault

Dave-R · Post by **Dave-R** » Mon Dec 20, 04 9:20 am

Probably means the rev counter is not connected correctly?