Reply
 
Thread Tools Search this Thread Display Modes
 
Old 10-05-2009, 02:21 PM   #1
Lt. Commander
 
Cymru's Avatar
 
Join Date: Aug 2009
Location: Atlanta, Georgia, United States
Posts: 247
Default Engine Alarm

Hi All,

Last weekend I left the boat running beautifully. Yesterday after pressure washing we started the boat and the alarm immediately sounded and would not go off. Oil pressure, temp (cold start) all seemed fine but obviously, I would not run it. I'm thinking and hoping that the problem may be that more water than normal has gone into the engine compartment and somehow caused the alarm to go off. thing is, I can’t for the life of me figure out what. I assume the alarm sounds when there is a problem with oil pressure, water pressure and temperature. What else will cause the alarm to sound?

As always, thanks in advance.
__________________

Cymru is offline   Reply With Quote
Old 10-05-2009, 03:02 PM   #2
Commander
 
Join Date: Jun 2006
Posts: 298
Default Re: Engine Alarm

Quote:
Originally Posted by Cymru
Hi All,

Last weekend I left the boat running beautifully. Yesterday after pressure washing we started the boat and the alarm immediately sounded and would not go off. Oil pressure, temp (cold start) all seemed fine but obviously, I would not run it. I'm thinking and hoping that the problem may be that more water than normal has gone into the engine compartment and somehow caused the alarm to go off. thing is, I can’t for the life of me figure out what. I assume the alarm sounds when there is a problem with oil pressure, water pressure and temperature. What else will cause the alarm to sound?

As always, thanks in advance.
Did you check your gear lube reservoir level?
__________________

racer2c is offline   Reply With Quote
Old 10-05-2009, 03:20 PM   #3
Lt. Commander
 
Cymru's Avatar
 
Join Date: Aug 2009
Location: Atlanta, Georgia, United States
Posts: 247
Default Re: Engine Alarm

I haven’t checked that at all. To be honest, I don’t know where it is or what type of oil it takes. I just looked in the manual and there is no image of the engine or its parts location. I have the single 7.4MPI with BIII.
Cymru is offline   Reply With Quote
Old 10-05-2009, 03:27 PM   #4
Commander
 
Join Date: Jun 2006
Posts: 298
Default Re: Engine Alarm

Quote:
Originally Posted by Cymru
I haven’t checked that at all. To be honest, I don’t know where it is or what type of oil it takes. I just looked in the manual and there is no image of the engine or its parts location. I have the single 7.4MPI with BIII.
It's going to be a small semi-transparent plastic reservoir mounted on the front or side of the engine (I'm only assuming that the Bravo III system uses one like this as my experience is with the A1). It will have blue gear oil in it and the alarm is triggered when the gear oil falls below the minimum fill line. It is one of the more common reasons for the alarm to sound and the first place I look.
racer2c is offline   Reply With Quote
Old 10-05-2009, 03:33 PM   #5
Commander
 
Join Date: Jun 2006
Posts: 298
Default Re: Engine Alarm



I would guess that the gear lube reservoir is the one on the port side in this picture (to the right of the 7.4 MPI decal). Your owners manual for the boat probably won't have engine pictures. Were you not given a Mercruiser owners manual? that's the one you want.
racer2c is offline   Reply With Quote
Old 10-05-2009, 03:37 PM   #6
Lt. Commander
 
Cymru's Avatar
 
Join Date: Aug 2009
Location: Atlanta, Georgia, United States
Posts: 247
Default Re: Engine Alarm

There were no manuals when I bought the boat. It was a bank repo so thats not a surprise. I'll have to do a search for the mercruiser manual and see if I can find one. Thanks.
Cymru is offline   Reply With Quote
Old 10-05-2009, 09:07 PM   #7
Lieutenant
 
Join Date: Mar 2008
Posts: 59
Default Re: Engine Alarm

My mechanic, who is excellent, says 9 times out of 10 it is the IAC motor when you get the intermittent alarm.
Ticamo is offline   Reply With Quote
Old 10-05-2009, 09:54 PM   #8
Admiral

 
seapuppy's Avatar
 
Join Date: Nov 2005
Location: Everett Wa
Posts: 4,681
Default Re: Engine Alarm

Quote:
Originally Posted by Ticamo
My mechanic, who is excellent, says 9 times out of 10 it is the IAC motor when you get the intermittent alarm.

ok...now I'm corn-fused...what is the iac motor??...never heard of one...


SP irate:
__________________
Don't compare your life to others. You have no idea what their journey is all about.
------------------------
SSN683 Association member
Par Excellence
------------------------------
2008 Bayliner 340 - "Wild Whim"
--------------------------------------
I live in my own little world....but it's okay-they know me here!!!

Avid practitioner of the martial art: KLIK-PAO.
Tap-Rack-Bang

Anyone that sez "Size doesn't matter" has never owned a boat!
seapuppy is offline   Reply With Quote
Old 10-05-2009, 10:30 PM   #9
Lt. Commander
 
Cymru's Avatar
 
Join Date: Aug 2009
Location: Atlanta, Georgia, United States
Posts: 247
Default Re: Engine Alarm

I guess its the Idol Air control motor but I'm not sure either.
Cymru is offline   Reply With Quote
Old 10-06-2009, 04:23 PM   #10
Lieutenant
 
Join Date: Mar 2008
Posts: 59
Default Re: Engine Alarm

Right, Idle Air Control motor.
Ticamo is offline   Reply With Quote
Old 10-06-2009, 05:18 PM   #11
Commander
 
Join Date: Jun 2006
Posts: 298
Default Re: Engine Alarm

Quote:
Originally Posted by Cymru
I guess its the Idol Air control motor but I'm not sure either.
So it wasn't the gear lube reservoir? I see you are from Atlanta. I spent last week there on a biz trip. Stayed in Vinings. Nice area.
racer2c is offline   Reply With Quote
Old 10-07-2009, 08:45 PM   #12
Ensign
 
Join Date: Sep 2009
Posts: 3
Default Re: Engine Alarm

I replaced my IAC valve last month. I got the alarm (2 beeps), engine wouldn't start unless high rpms. Low oil pressure. The valve is $100 bucks. Once replaced the boat runs like new. I have 5.0MPI mercruiser.
IAC Valve - 803149 Mfr. Quicksilver by Mercury $97.12
caleb is offline   Reply With Quote
Old 10-07-2009, 09:24 PM   #13
Lt. Commander
 
Cymru's Avatar
 
Join Date: Aug 2009
Location: Atlanta, Georgia, United States
Posts: 247
Default Re: Engine Alarm

Quote:
Originally Posted by racer2c
Quote:
Originally Posted by Cymru
I guess its the Idol Air control motor but I'm not sure either.
So it wasn't the gear lube reservoir? I see you are from Atlanta. I spent last week there on a biz trip. Stayed in Vinings. Nice area.
I haven’t gotten out to the boat yet. Will probably go on Saturday and run through everything one more time before calling the mechanic.

I actually live right around Vinings. My office overlooks the village too. Where did you stay?
Cymru is offline   Reply With Quote
Old 10-09-2009, 02:42 PM   #14
Commander
 
Join Date: Jun 2006
Posts: 298
Default Re: Engine Alarm

Quote:
Originally Posted by Cymru
Quote:
Originally Posted by racer2c
Quote:
Originally Posted by Cymru
I guess its the Idol Air control motor but I'm not sure either.
So it wasn't the gear lube reservoir? I see you are from Atlanta. I spent last week there on a biz trip. Stayed in Vinings. Nice area.
I haven’t gotten out to the boat yet. Will probably go on Saturday and run through everything one more time before calling the mechanic.

I actually live right around Vinings. My office overlooks the village too. Where did you stay?
The Courtyard Marriott on Paces Ferry Rd. Had a few Guinness at Meehans across the street. In the mornings I sat in line at the Starbucks with numerous BMW's, Audi's and Jags. My rental car didn't fit in!!!
racer2c is offline   Reply With Quote
Old 10-09-2009, 06:30 PM   #15
Lt. Commander
 
Cymru's Avatar
 
Join Date: Aug 2009
Location: Atlanta, Georgia, United States
Posts: 247
Default Re: Engine Alarm

Brilliant mate. My office is in that silver glass building just off to the right of the hotel. I can see Meehans from my window. If you're in town again, let me know and I'll buy you a pint.
Cymru is offline   Reply With Quote
Old 10-09-2009, 07:08 PM   #16
Commander
 
Join Date: Jun 2006
Posts: 298
Default Re: Engine Alarm

Quote:
Originally Posted by Cymru
Brilliant mate. My office is in that silver glass building just off to the right of the hotel. I can see Meehans from my window. If you're in town again, let me know and I'll buy you a pint.
Thanks! You're on!
racer2c is offline   Reply With Quote
Old 10-12-2009, 03:37 PM   #17
Lt. Commander
 
Cymru's Avatar
 
Join Date: Aug 2009
Location: Atlanta, Georgia, United States
Posts: 247
Default Re: Engine Alarm

I just wanted to close the thread and let you guys know what the problem was. It appears that the culprit was the gear lube oil. I had not checked it since a complete service was done in late august. One thing I did learn was that if the oil is not filled properly, the reservoir appears to be full but there is air trapped that makes it appear fuller than it is. I'm guessing this is the case for me since I see no evidence of a leak anywhere. That said, I'll know to keep a better eye on it.

Thanks again to everyone that tried to help. It’s really appreciated.
__________________

Cymru is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
1900 SR3 with stains on upholstery Captain's Cove Maxum Maxum Maintenance 5 12-22-2009 10:31 PM
Zodiac help NWINMaxum Maxum Owners General Discussions 4 06-22-2009 02:53 PM
depth finders. enivalg Electronics 19 04-14-2009 04:58 PM
Bowed Seat bmetro Maxum Owners General Discussions 3 04-06-2009 04:46 PM
1999 5.7 2bl timing issue BayBoy Engines 6 07-15-2008 03:03 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT. The time now is 05:22 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2020, vBulletin Solutions, Inc.