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View Full Version : '02 150 hp Yammie, got no juice



Sea Gristle
11-08-2009, 09:13 PM
on an 02 SeaPro. Pulled, recharged the batteries (boat had been sitting a since August) hooked them back up. I have power at the console (lights, horns, radio etc) but nothing to the voltmeter, engine or trim motor. Checked the fuses on the engine, all good. Can't see anything amiss wiring-wise. Any ideas?

Grady23
11-10-2009, 01:37 PM
Are you SURE the throttle control is in neutral???? What about the safety switch?

Sea Gristle
11-10-2009, 02:13 PM
Checked those. There's no power registering on the Volt meter, but the trim should work even if the key is off, or at least it used to. That's what stumps me. I wonder if I can hot wire the trim motor so I can get the thing up so I can drive it to a mechanic?

RickyF
11-10-2009, 02:19 PM
You should be able to manually raise the motor by opening the plug at the top of the trim assy. You can then lift it by hand and lock it back down if you can't get power to it.

Sea Gristle
11-15-2009, 10:08 AM
Thanks for the tilt suggestion. I'll keep that in mind if I can't figure the underlying problem and take it to a professional.

So the hunt continues. The power seems to have restored itself to the gauges ( I'll have to look more deeply into that later!); I'm showing 12 volts but when I turn the ignition key, or hit the tilt switch (either at the helm and the engine) the voltmeter drops to zero and I hear clicking from the area of the starter motor. (Kinda like when the battery is dead on your car)

According to a Yamaha wiring diagram it looks like the power from the Battery goes to the Starter relay which supplies the starter motor and then goes to the Power Trim relay. If a starter is bad, would there would still be power to the trim?

Capt Kid
11-15-2009, 10:22 AM
yes you would still have power to the trim. sounds to me like you have a bad ground somewhere or the main batt. cable is shorted somewhere

supermuff
11-16-2009, 08:37 AM
I had an issue where the motor would click like it was a dead battery.
Turned out to be the cables not grounding on the batteriers. Buddy took a knife scrapped cables and the boat fired right up. I think the last guy was correct on looking for a poor ground.

A pain in rear to fix intermitten issues.

Sea Gristle
11-17-2009, 08:18 AM
Bingo. The only thing I didn't check was the hot wire connection at battery switch. Unhooked the switch cleaned the terminals and power was restored. The thing that threw me is I was getting 12.7 volts on the meter beyond the switch, but I guess when you really put a load on it if it's not a good connection there's not enough amps to do the job?

Rockfish here I come. Thanks guys!

supermuff
11-17-2009, 08:51 AM
i took a mter and did the same thing
Glad to hear it worked!!!!