Tach reads funny

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   Thanks for the advise and help. I'll pull the dash and have a look. I was behind the dash on the left side earlier this summer due to a loose ignition set. At that time I didn't notice any corrosion. 

Where is the sending unit for the tach on the '96 ? 351 w/carb.

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woodman935 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: July-31-2010 Status: Offline Points: 36	Post Options Post Reply Quote woodman935 Report Post Thanks(0) Quote Reply Topic: Tach reads funny Posted: July-15-2012 at 11:51pm
	Thanks for the advise and help. I'll pull the dash and have a look. I was behind the dash on the left side earlier this summer due to a loose ignition set. At that time I didn't notice any corrosion. Where is the sending unit for the tach on the '96 ? 351 w/carb.

bhectus Members Profile Send Private Message Find Members Posts Add to Buddy List Platinum Member Joined: July-04-2010 Location: Gator Country! Status: Offline Points: 1809	Post Options Post Reply Quote bhectus Report Post Thanks(0) Quote Reply Posted: July-15-2012 at 11:29pm
	My '96 used to do the same thing. My suggestion is to pull the dash pod and clean all your connections behind the dash, I used a wire brush on all the contacts and nuts, then put them back on. Some dielectric grease will help them from corroding in the future. These older boats are known for having substandard wiring, and over time it catches up to them. Any bit of corrosion will start causing issues such as you are experiencing as the continuity starts getting less and the voltage to the gauges drops.
	'02 Ski Nautique 196 w/ 5.7 Apex bowtie - Sold '87 Barefoot - sold '97 Super Sport Nautique - originally custom built for Walt Meloon '97 Ski Nautique '83 SN 2001

woodman935 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: July-31-2010 Status: Offline Points: 36	Post Options Post Reply Quote woodman935 Report Post Thanks(0) Quote Reply Posted: July-15-2012 at 10:59pm
	Today on my '96 SN the tach started to be weird. I've owned to boat since new and know it pretty well,610 hours total time. At idle, the tach reads, as it should, 800rpm or so. The motor idles fine, no hesitation all, pulls strong, but at 32 mph the tach shows 4000/4200 rpm, at full throttle 40/42 mph the tach shows 5000 + rpm. Anyone have any ideas ? Thanks in advance, Woody

Tach reads funny

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