Alarm wont stop sounding ? Any ideas why ?
 

Finally have both my spare 575sci's installed together. Ran it like that for the first time yesterday. Boat ran flawless, better then my original motors. Only issue is the buzzer wont stop ringing when both engine keys are in on/run position. When I shut either engine the buzzer stops. Temp is perfect, voltage is fine, drive bottles full, and oil pressure is perfect....... Scanned both engines and no fault codes at all. Neither engine is setting off the alarm. Anyone ever have this happen ? Maybe a faulty buzzer ? Just weird it didn't do it last year with one original and one spare motor running.

Are the wires to the drive lube bottles still hooked up?

Yes...

The mefi 3 monitors the following:
Low oil pressure
Low Drive oil
engine over heating
low voltage

I suppose you went through a shut down and restart deal also right? Just a basic reset. I use to have this happen once in a great while and for the life of me can't remember the problem. It may have been the drive resivor tanks/bottles mentioned in above post. But I would imagine it had something to do with install. Wasn't that way before but is now. Did you clip off a sensor/sender or something lowering new install? Ground? Possibly buzzer itself but I doubt it. Just start process of elimination. Glad all at least went well and it was nothing obvious. You'll find it

Yes, that's why I'm confused.... all those readings are fine. Scanner says that no alarm or light is being set off. I will have to go back and check all the grounds again..... and possibly install new buzzer...... I'll keep you posted..... Thank you for the help.........

I suspect one of the wires going to the buzzer is grounding out somewhere.

Most people just clip the alarm wires and sell the boat.

I had that problem with my 500efi's and it was that the float in the drive lube bottle was stuck down. The bottom of the bottle was all gummed up. Drain the bottles and clean it out. That might be your problem to

Do you have a fuel vapor sensor? When the sensor fails it triggers false alarms all the time. Replace sensor - alarm goes away.

The strange part is the fact that it only goes off when BOTH keys are on.

I will try this..... Thanks....

just did this Sunday when I installed drives for the season.....

Have to check this too...... Thanks

Exactly..... I run just port and its off, run just stbd and its off...... both running and it sounds......weird

Are you sure its the warning horn for the engines NOT a fume detector or CO alarm or Low depth alarm ?

Is your engines stock with stock ECM if so post your engine serial numbers.

Possibles - wiring, low voltage (battery (ies), other possibles- how you have your batteries linked all together, have you load tested your batteries and checked all connections and for corrosion issues ? Shorted wiring.

Unplug your gear lube bottles wires while alarm is going off ? Did alarm go away ?

Next what kind of alarm ??? solid horn - solid horn but stops and starts all over , or Beep beep beep ??? You failed to mentioned that end ? I understand this should be a MEFI ecm is this correct for your app cause 50 % up here do not have stock apps. Always have to ask these important things. Can not fix if you do not know exactly what you have for an app. Just saying

Do you have one warning horn for twin engines or do have 2 warning horns for each engine ???

Possible warning horn bad or shorted

definatly not low depth but it possibly could be fume detector..... I will double check that this week..... engines are not stock but I have no idea what was done to them. I actually started another thread trying to see if anyone knows the engines. They came out of the infamous Cobra marine but were never touched by them. They run great so far but I'd love to know what was done to them. It's a solid alarm, it just goes and goes and goes........ And each engine has it's own alarm. Like I stated before its odd because it only sounds when both engines are running..... as soon as I shut one or the other the buzzers go silent....... thanks for the help so far.......

I just had the same problem last week running the boat for the 1st time. Turned out to be corrosion in the tether/kill switch. I think it was just enough to change the voltage and sounding alarm steady

I'll check that too...... thanks

I had an alarm go off the first year with our boat 7.4 mpi - stock-- turns out it wasn't an engine alarm but a depth alarm-- I inadvertently set the alarm depth wrong and it was going crazy.

3pointstar

Bringing up an old thread...just installed engines.

Stock 500efi setup

Port engine starts fine and no alarms.

Start starboard engine runs fine then 30 seconds later we get a beep beep beep beep. No pattern just a beep beep beep. We tested drive bottle by disconnecting the port engine it gives a different beep pattern. 2 beeps pause then 2 beeps.

Tried disconnecting and re connecting oil pressure senders. No dice.

Hooked up rinda tool. Says it's a general engine alarm type 1. With no other fault codes.

All guages are reading perfect invluding oil pressure, water temp, oil temp, etc

stumped on this one..anyone have any ideas?

read all my posts here and I was not getting mad about the springs in the other thread. ^^^^^^

http://www.offshoreonly.com/forums/g...-mefi-3-a.html