92 evinrude buzzer problems... Stumped...

[jmanf150]

omc control box is making buzzer steady. it keeps going off in boat. i can jump around inside the boat and it will go off been doing some troubleshooting its belived to be something inside that control box. need some help with all this. starting with that control box assembly is tuff to take apart? any help or diagrams.? suggestions for troubleshooting? Thanks guys.

 

[jmanf150]

Re: 92 evinrude E90TL buzzer problems

Re: 92 evinrude E90TL buzzer problems

its just buzzing like crazy not been running i can jump in the boat and it goes off. dont worry it will be back.

 

[jmanf150]

Re: 92 evinrude E90TL buzzer problems

Re: 92 evinrude E90TL buzzer problems

i tried again it buzzed for about 3 min. then goes off.i flipped back to accessory and it will be clear for a while but then it comes back. there is no good disconnect for the brown heat wire coming out of upper left cylinder. i think it is a bad buzzer inside that control box. should i take it all the way apart?

 

[Rick.]

Re: 92 evinrude buzzer problems... please help

Re: 92 evinrude buzzer problems... please help

I'm inclined to tell you to just keep jumping around in your boat if that works. I have a funny mental picture. If the jumping works and your convinced it is not coincidental then I would guess you have a loose wire, no pun intended, (Same one you describe as the brown heat wire) right around the buzzer that is going to ground. That's where I would start to look and then keep following it to the motor. Best of luck. Rick.

 

[jmanf150]

Re: 92 evinrude buzzer problems... please help

Re: 92 evinrude buzzer problems... please help

i will have to get that video of me jumping up and down , but that dont always work. im going to take that control box apart.

 

[jmanf150]

Re: 92 evinrude buzzer problems... please help

Re: 92 evinrude buzzer problems... please help

alright, i feel like i am making some progress. I found the buzzer it was about 2.5" in diameter there are 2 purple wires on one terminal and that one tan wire on the other terminal The tan or should i say "brown" wire, which i think is going to the heat wire in the upper left cylinder. i pulled it off the buzzer cleared. im still testing , -is there a good way to test that buzzer?

 

[Daviet]

Re: 92 evinrude buzzer problems... help testing buzzer?

Re: 92 evinrude buzzer problems... help testing buzzer?

You know the buzzer is working, purple wire has voltage with the key on, brown wire grounds through the temp sender. If the brown wire is grounded anywhere in the system, the horn will sound. If you disconnect the brown wire at the buzzer and it stops buzzing, the ground is somewhere between the buzzer and temp sender. You could spend a lot of time checking the wire, or just run a new wire.

 

[jmanf150]

Re: 92 evinrude buzzer problems... help testing buzzer?

Re: 92 evinrude buzzer problems... help testing buzzer?

both the purple wire and the tan wire have 12v. it looks like it is a marine 12conductor or something the wire runs back and connects to a big red connector under the engine cover. then i can see the bundle of wires, at that point i can see the breakout, there is 2 tan wires 1 going to cylinder head and 1 going to the oil resevoir over another set of wires that are not in the bundle. How do i recreate the buzzer going off?

 

[keefallan]

Re: 92 evinrude buzzer problems... Stumped...

You need a multimeter or continuity checker to do this. As previously stated the tan wire is supposed to be grounded only when an alarm is needed( aka water temp, vacuum switch etc). There is already 12v at the horn when you turn the key on. It just needs to be grounded to go off. That is what is happening with you, the tan wire is grounding out. To make it do it manually, you just have to take the tan wire to ground and the horn will go off. All of the tan wires on your motor should be all the same(connected in parrallel). They are all spliced together in the harness. Now you need to isolate what is causing the short. It can be in your harness. It can be one of the senders. It can be a nick in a wire. That's where a meter comes in.............

 

[jmanf150]

Re: 92 evinrude buzzer problems... Stumped...

so im checking the wire but the problem has gone away. how is that wire connected to a vacuum switch amd where is it located

 

[ezeke]

Re: 92 evinrude buzzer problems... Stumped...

With the igniion key on, the horn should sound if you ground the control end of the disconnected tan wire to the engine block.

The temperature switch is an on/off switch in the cylinder head so if it is on when the engine is cool it has corroded and shorted to ground.

 

[keefallan]

Re: 92 evinrude buzzer problems... Stumped...

If you look at your wiring diagram for that motor, you'll see that that wire is common to many different spots(temp senders, vac switch etc). But if you do exactly what EZEKE said(with key on) and ground out the tan wire, the alarm will go off. If it has cleared, I would take an ohmmeter reading in the harness for the tan wire and then take a reading in the motor harness just to see how much resistance is in the wiring. Compare it to other wires in the harnesses to see an approximate resistance from point a to point b.

 

[ezeke]

Re: 92 evinrude buzzer problems... Stumped...

The 90HP motors don't have the vacuum switch for fuel obstruction warning.

 

[jmanf150]

Re: 92 evinrude buzzer problems... Stumped...

thanks guys . buzzer is sounding steady i can grab the wire at the buzzer terminal and wiggle it and the prob clears. ?

 

[Rick.]

Re: 92 evinrude buzzer problems... please help

Re: 92 evinrude buzzer problems... please help

I'm inclined to tell you to just keep jumping around in your boat if that works. I have a funny mental picture. If the jumping works and your convinced it is not coincidental then I would guess you have a loose wire, no pun intended, (Same one you describe as the brown heat wire) right around the buzzer that is going to ground. That's where I would start to look and then keep following it to the motor. Best of luck. Rick.

So we're not going to get the video. Glad you found the problem. Rick.