JOhnson 40 hp 1999 loud horn/ Beeeep!!!

[fishmonkey]

I just got back form a fishing trip and just when I was heading in I started up to go and this loud solid horn blows off I shut down right away and though low oil check tank and bulb all is ok tank was down to about a 1.5 inches, water pump pumping water no steam or anything wierd going on just this horn Beeeeeeeeeeeeepping sound pulled the top off and checked the cyliders not hot to the touch so I limped back in about 3 mins. no noticeible effect ,, Just a Note I have the VRO/ OMS. pump replace about 6 mouths ago thing has ran fine till now it pumping oil been checkin levels REGular basis what now ..
Any help would be Great ?? where to start :facepalm:

 

[Silvertip]

Re: JOhnson 40 hp 1999 loud horn/ Beeeep!!!

Solid beep is overheat. Have the alarm system tested. By the way, 1.5 inches of oil in the resevoir is getting pretty low.

 

[fishmonkey]

Re: JOhnson 40 hp 1999 loud horn/ Beeeep!!!

Solid beep is overheat. Have the alarm system tested. By the way, 1.5 inches of oil in the resevoir is getting pretty low.

Thanks for the info so were shouLd I start by replacing the thermostat checking the wiring to the horn ,?
Thanks

 

[wilde1j]

Re: JOhnson 40 hp 1999 loud horn/ Beeeep!!!

I would suggest getting an OEM shop manual if your going to do it yourself.

 

[fishmonkey]

Re: JOhnson 40 hp 1999 loud horn/ Beeeep!!!

Yep got one yesterday online ..
So Here is what I did went out first got muffs and did a cold start beeeper sounded so I know its not getting hot .
Uplugged the sencer wire buzzer still going off ..
The buzzer is under the console so IM tracing the wire for breaks..no luck yet ..
Now what ??

 

[fishmonkey]

Re: JOhnson 40 hp 1999 loud horn/ Beeeep!!!

Yep got one yesterday online ..
So Here is what I did went out first got muffs and did a cold start beeeper sounded so I know its not getting hot .
Uplugged the sencer wire buzzer still going off ..
The buzzer is under the console so IM tracing the wire for breaks..no luck yet ..
Now what ??

Well not having much luck no grounding or breaks in the wire anywhere I can find. someone told me it could be a short in the sending unit it the oil tank that make in it go off , which dont make much sence it was a solid beeeeep. the wiring diagram show the wire going from the senser to the wiring harness to the horn any input would be great .. Help!!!! :facepalm:

 

[e10]

Re: JOhnson 40 hp 1999 loud horn/ Beeeep!!!

Doesn't 99 come with a system check gauge?

 

[jonesg]

Re: JOhnson 40 hp 1999 loud horn/ Beeeep!!!

Definately sounds like elec fault.
If the engine was cold at startup and the alarm sounded, it can't be overheat.
Fuel pump woes usually show up at WOT, not idle.

Its definately not oil alarm, wrong sound.

Problem is...you need to replicate the problem to troubleshoot.
If the alarm is sounding you can disconnect the grey signal wire at the horn, if it continues beeping the horn is bad.
Unplug the port heat sensor and ground to block (key on) beeper should sound.

As the pump was recently done, I would go over all the elec connectors all the way back to oil tank.
disconnect and clean, look for any corrosion, that will cause the alarm too.

With the ignition on, not running, wiggle any related elec connector, if its intermittent the alarm will beep.

Maybe use some spray aerosol elec cleaner, reconnect and use dialectric grease to seal.

Get the genuine factory service book, not seloc junk. You need to order it from the dealership.

 

[fishmonkey]

Re: JOhnson 40 hp 1999 loud horn/ Beeeep!!!

Definately sounds like elec fault.
If the engine was cold at startup and the alarm sounded, it can't be overheat.
Fuel pump woes usually show up at WOT, not idle.

Its definately not oil alarm, wrong sound.

Problem is...you need to replicate the problem to troubleshoot.
If the alarm is sounding you can disconnect the grey signal wire at the horn, if it continues beeping the horn is bad.
Unplug the port heat sensor and ground to block (key on) beeper should sound.

As the pump was recently done, I would go over all the elec connectors all the way back to oil tank.
disconnect and clean, look for any corrosion, that will cause the alarm too.

With the ignition on, not running, wiggle any related elec connector, if its intermittent the alarm will beep.

Maybe use some spray aerosol elec cleaner, reconnect and use dialectric grease to seal.

Get the genuine factory service book, not seloc junk. You need to order it from the dealership.

OK I will try that. yes the online manual is difficult to understand at best ..I tryed ebay for the real amnual but no luck searched the web no luck parts house's no luck ??
looked for J40pleea .. nothing on the manual .I better go try to fix this beast the spring walleye bite is on and I have no BOAT!!!

 

[jonesg]

Re: JOhnson 40 hp 1999 loud horn/ Beeeep!!!

Post 1996 you have to order factory service books from the dealership, worth their weight in gold.
Even if you don't work on it yourself, its explains everything.
The worst manuals are the CDROM's. They are just scanned selocs.

 

[Joe Reeves]

Re: JOhnson 40 hp 1999 loud horn/ Beeeep!!!

Warning horn has a black built in ground wire and 2 slide on terminals. The TAN wire must be attached to the slide on terminal closest to the black ground wire. If otherwise, weird things happen.

Test...... All wires attached properly. Turn key ON (engine not running). If horn beeps remove the TAN wire from the horn. If beeping continues, the horn is faulty. If horn stops beeping, one of the sensors at the engine is grounding or the TAN wire has shorted out at some point.