LS1 MOLESTER

Boat is 89 Baja 235. Stock gauges.
I'm told it's an electrical (not mechanical) linkage.

At idle it reads 0.. as RPM's climb near WOT so does the gauge. When i'm near top end, the RPM gauge reads 2,000RPM's or so.

When backing off the gas, the gauge drops accordingly.

Any suggestions before i run out and buy a new gauge?

mats

You could of course check the wiring before buying a new guage. You may have a short somewhere even if it is not likely since the ignition appears to work.

CPPerformance

Check the setting on the gauge. On most brands of Electric Tachometer gauges there is a switch on the back. It will most likely read something like 1, 2, 3, 4.
1 = 4 Cyl
2 = 6 Cyl
3 = 8 Cyl
4 = Most Outboards

If the switch is set incorrectly the Tach will function but read incorrectly like you describe above.

mtocrs1

Some of the older boat Tachs have a adjuster screw on the back. All you have to do is use the screw to adjust the needle while the boat is at idle. Use your timing light to get the accurate RPM and adjust screw until tach matches timing light reading. Let us know what you find.

GOODT

this guy doesnt know a "rpm gauge" is a Tach and you think hes going to fix it or knows how to use a timing liight ????

no offence

SB

Well, you have to start your DIY some where.

Personally, I'm more disturbed by his name though.

GOODT

LMAO

mtocrs1

GOODT
Just trying to help the guy out. No need to bash him. No offense taken on my part, but he might not like your comment.

GOODT

Im not trying to be mean or bash him.....

but too much info to some people can be a dangerous thing...


because they will try and fix it with not mech ability's at all, Im always more then happy and enjoy helping people here but when someone demonstrates absolutely no mech ability I always recommends they take it to a reliable shop in there area for that reason......

for people WITH mech back round / ability, alot of times it hard to see some people just can visualize a mech problem in there head

just like I have a hard time figuring out how this stupid computer works....

but give me a 525 with smart craft and I have no problem figuring out a problem

My brother has a doctorate in computer engineering (yes hes dr computer) he designs them....I start talking about intake, compression, power, exhaust ( the 4 strokes ) hes lost just as Im lost when he starts talking about pc boards ect

Im not trying to bash him just help him

mtocrs1

I totally understand. No worries.