rosesrfree4u
Recruit
- Joined
- Jul 24, 2010
- Messages
- 3
I have a 1988 Evinrude 88 SPL with an omc tach. The boat has only been used in FRESH water service. The tach was installed by me (shadetree boat mechanic) in spring of 10' and worked correctly that season, but at the begining of the season it was giving me a lower reading under the same operating conditions by about 15%, then last year halfway thru the season last year it suddenly started doing the following: when the key is turned to the run position the gauge begins to read 5200 rpm even with the engine off, upon leaving the key in the run position, over the course of several minutes, the gauge will climb to over 6000 and stay pinned at maximum. Turning off the key returns the gauge to 0.
Things I thought to check:
I've checked the pole setting and it is correct for this engine/tach.
I visually inspected the electrical connection at the throttle control and it appears uncorroded and normal, removing the connector returns the gauge to a normal off reading of 0.
Under the engine cover, all the wiring appears normal with no obvious corrosion or damage to any wiring.
There may be an inch of inch on the ground but I'm already thinking of summer!I tried contacting omc support since the gauge lasted about a year I thought they would be willing to give some info but they were less than supportive. I can still fish without the tach but after finally investing in one, I've gotten used to it and would sure like to get it working again.
Am I looking at a bad gauge, or stator, or something else? What steps should I take to troubleshoot further?
Things I thought to check:
I've checked the pole setting and it is correct for this engine/tach.
I visually inspected the electrical connection at the throttle control and it appears uncorroded and normal, removing the connector returns the gauge to a normal off reading of 0.
Under the engine cover, all the wiring appears normal with no obvious corrosion or damage to any wiring.
There may be an inch of inch on the ground but I'm already thinking of summer!I tried contacting omc support since the gauge lasted about a year I thought they would be willing to give some info but they were less than supportive. I can still fish without the tach but after finally investing in one, I've gotten used to it and would sure like to get it working again.
Am I looking at a bad gauge, or stator, or something else? What steps should I take to troubleshoot further?
