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View Full Version : Tachometer Needle Bouncing at Idle


bjm300zx
07-08-2007, 01:05 AM
Hi, my tach is boucing at idle, and I have checked all connections. The boat only has 110hrs on so I don'tt think it should need replacing yet. Any ideas on how to fix this?

bigmac
07-08-2007, 07:38 AM
Hi, my tach is boucing at idle, and I have checked all connections. The boat only has 110hrs on so I don'tt think it should need replacing yet. Any ideas on how to fix this?Sounds like a loose connection somewhere. I'd start with the a close look at the wiring from the MMU to the gauge, unplug the conncector to the tach, spray it with electronic cleaner and replug.

93ProStar205
07-08-2007, 09:00 AM
When it bounces - are you running your stereo or high-drain electronics? My tach bounces with the bass at high volumes on my 97 PS.

bigmac
07-08-2007, 09:08 AM
When it bounces - are you running your stereo or high-drain electronics? My tach bounces with the bass at high volumes on my 97 PS.

Ooh...that's a good suggestion. High current-drain items could indeed cause that at idle.

bjm300zx
07-09-2007, 01:01 AM
I have those electroinics, but they are not turned on when this is happening.