Erratic Tach shows 7k at WOT and 4K at idle etc.

nymack66

Petty Officer 1st Class
Joined
Aug 5, 2009
Messages
356
Folks, I left my Boat plugged in to the on board automatic charger for the first time. I notice during my launch on Saturday my Voltage gauge shows 13v DC which it never did it the past (right on 12vdc).
My assumption at the moment was ?overcharged batteries?.
It gets better started up fine, troll through the wake zone on dead idle which on past experience I know is no more than 800 RPM.
Tach shows 4k !!! Ampere Gauge shows 14v DC !!
Moved up to ? throttle I am now up on a plane all is well except the TACH shows 7K which is the maximum it can show.
 

nymack66

Petty Officer 1st Class
Joined
Aug 5, 2009
Messages
356
Re: Erratic Tach shows 7k at WOT and 4K at idle etc.

Thanks , I found it problem loose ground on the Tach its working fine now ...
 
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