Why is my tach bouncing all over the place?

Joined
May 29, 2011
Messages
65
can someone tell me what would cause my rpm gauge to bounce all over the place... sometimes it works fine but most the time is all over the place. this is a 1997 evinrude intruder 150hp. thanks
 

kayakndave

Seaman Apprentice
Joined
Jun 22, 2004
Messages
46
Re: Why is my tach bouncing all over the place?

Happens on my boat as well. Not sure you can do anything about it. Seems I read that response from a boater with the same problem. The guy explained why it happens but I can't remember his answer. Sorry I'm not much help. I just quit worrying about it on my boat. Like you said....sometimes it works. Sometimes it don't.
 

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: Why is my tach bouncing all over the place?

Loose connections, bad rectifier/regulator or tach.
 

Will Bark

Lieutenant
Joined
Aug 1, 2010
Messages
1,470
Re: Why is my tach bouncing all over the place?

Check for corrosion at the connections in back of tach and as Boobie said make sure they are tight and clean.
 
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