1989 evinrude 110hp alarm

[MattyL13]

I'm sure this is a stupid question but my manual didn't come yet....I just replaced the t stats and I'm getting water (even though the stat housing is leaking. Ill fix this tomorrow) but my question is what does one long beep mean from the buzzer? Its one long 1-2 second buzz. Is this oil or water?

 

[Joe Reeves]

Re: 1989 evinrude 110hp alarm

(VRO Horn Warnings)
(J. Reeves)

NOTE: I retired around 1991/92. Possibly some of the later V4 engines and others may also incorporate a fuel vacuum switch that would enable a fuel restriction warning to sound as mentioned below, an unknown factor to myself.

1 - A steady constant beep = Overheating - The V/6 engines, possibly some others, have a fuel restriction warning which is also a steady constant beep.

2 - A beep every 20 or 40 seconds = oil level has dropped to 1/4 tank. (Late model engine = Every 40 seconds)

3 - A beep every other second = VRO failure, air leak in oil line, oil restriction, (anything that would result in a lack of oil being supplied to the engine).

NOTE - If the warning horn is the black plastic (overpriced) three wire type horn, the warning horn should beep once when the ignition key is turned to the ON position. If it does not, it is either faulty or someone has disconnected it (a stupid move!). At any rate, if it does not beep which indicates that the horn is non functional, find out why and do not run the engine until the problem is corrected.

 

[MattyL13]

Re: 1989 evinrude 110hp alarm

Thanks, looks like I might have an oil issue (which I kinda of figured I did). Now, I had to replace the ignition switch two years ago, and that's the last time I worked on this project. There was no key for the boat so I got a new switch. Fairly certain I wired it correctly. Now, reading your above post, it says the buzzer should beep when the key it turned to ON. this doesn't happen for me. The buzzer only comes on after a minute or two of running on the muffs. I just replaced the stats and now I have water flowing. This was ONE of my issues. When I got this boat (free) 2 years ago, the oil tank was a solid block of ice. Once it melted a few weeks later, I pulled the tank, cleaned everything and put it back in. Last weekend was the first time I ran the motor on the boats gas and oil tanks. before that, I was just running the engine on a small can of mix gas with the fuel line dunked directly in the can. I got the buzzer then too, which would make sense because the system didn't think it was getting oil, even though it was since I was running mix. So I'm thinking I either have air in my oil lines, a blocked oil line or a failed VRO system. Do you think I should just bypass the VRO and be done with it?

 

[Joe Reeves]

Re: 1989 evinrude 110hp alarm

Yes, bypass it as follows.

(VRO Pump Conversion To Straight Fuel Pump)
(J. Reeves)

You can convert the VRO pump into a straight fuel pump, eliminating the oil tank and VRO pump warning system, but retain the overheat warning setup (and fuel restriction warning if so equipped) by doing the following:

1 - Cut and plug the oil line at the engine so that the oil side of the VRO pump will not draw air into its system. Trace the wires from the back of the VRO to its rubber plug (electrical plug) and disconnect it.

2 - Trace the two wires from the oil tank to the engine, disconnect those two wires, then remove them and the oil tank.

3 - Mix the 50/1 oil in the proper amount with whatever quantity fuel you have. Disconnect the fuel line at the engine. Pump the fuel primer bulb until fuel exits that hose with the tint of whatever oil you used. Reconnect the fuel hose.

That's it. If you want to test the heat warning system to ease your mind, have the key in the on position, then ground out the tan heat sensor wire that you'll find protruding from the cylinder head. The warning horn should sound off.

 

[MattyL13]

Re: 1989 evinrude 110hp alarm

Done, It's running great now and no alarm. I did ground out the overheat sensor wires on each head and both sounded the alarm. Seems as though that's one less problem I need to fix. Thanks for the help.

 

[Joe Reeves]

Re: 1989 evinrude 110hp alarm

The warning horn should be an overpriced piece of black plastic that has one built in black ground wire and two slide on type wiring terminals.

The TAN wire must be attached to the slide on terminal closest to that black ground wire..... with the purple voltage wire attached to the slide on terminal furthest away from the black wire. If reversed, weird things will happen.

If wired correctly, and if the horn doesn't beep once when the key is turned to the ON position, that normally indicates that the horn is faulty. However, due to the price of that horn, you could rig a test switch easily by running a ground wire from that TAN wire to and thru a momentary switch to a ground.... press momentary button, horn beeps, horn is okay.

 

[SparkieBoat]

Re: 1989 evinrude 110hp alarm

radio shack has a cheaper horn 12V that I use. works great for me...I have heard of newer EFI/DI motors having issues with the off brand horns though..but for carbbed motors no problem.