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06-03-2012, 11:05 PM
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#1
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Veteran Member
City: Cochrane, Alberta
Vessel Name: Painters Cove
Vessel Model: 1997 Bayliner 5788
Join Date: Feb 2011
Posts: 88
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Engine alarm buzzer
One of the engine alarms suddenly started buzzing continuously when idling after a long run. The engine oil levels and oil pressure seems ok. This is on a 610 hp MAN diesel on my Bayliner
Next day when starting up the same thing happened, continuous buzzing , but pressure and temperature matches the other engine. Since we were halfway between Shearwater and Prince Rupert I disabled the alarm and continued on with a close eye on temps etc all the way.
So what is causing this, I suspect a faulty sender but not sure where sender is located or how to test it out. Are replacement senders readily available or do I need a special one?
Any advise will be appreciated
Bob
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06-03-2012, 11:49 PM
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#2
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Veteran Member
City: Prince Rupert,BC
Vessel Name: Salty Bear
Vessel Model: Ta Yang Pilothouse Trawler
Join Date: Jan 2012
Posts: 41
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Bob are you still enroute to Rupert?
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06-03-2012, 11:54 PM
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#3
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Master and Commander
City: Vallejo CA
Vessel Name: Carquinez Coot
Vessel Model: penultimate Seahorse Marine Coot hull #6
Join Date: Sep 2010
Posts: 12,559
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Quote:
Originally Posted by weebobby
One of the engine alarms suddenly started buzzing continuously when idling after a long run.
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Which one?
Idling for a long time isn't good. My engine's builder (JD) says not to idle longer than five minutes.
__________________
Kar-KEEN-ez Koot
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06-04-2012, 12:14 AM
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#4
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Veteran Member
City: Cochrane, Alberta
Vessel Name: Painters Cove
Vessel Model: 1997 Bayliner 5788
Join Date: Feb 2011
Posts: 88
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Quote:
Originally Posted by Salty Bear II
Bob are you still enroute to Rupert?
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In Rupert now at PRRYC , just noticed your homeport. Can you recommend a mechanic?
Bob
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06-04-2012, 12:17 AM
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#5
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Veteran Member
City: Cochrane, Alberta
Vessel Name: Painters Cove
Vessel Model: 1997 Bayliner 5788
Join Date: Feb 2011
Posts: 88
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Quote:
Originally Posted by markpierce
Which one?
Idling for a long time isn't good. My engine's builder (JD) says not to idle longer than five minutes.
[/INDENT]
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Mark, This was just as we idled down approaching the anchorage after a 7 hour run.
The alarm is just marked "engine alarm" and I am "assuming" it is a low oil pressure alarm but oil pressure and engine temps were OK and exactly the same as the other engine.
Bob
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06-04-2012, 01:02 AM
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#6
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Veteran Member
City: Prince Rupert,BC
Vessel Name: Salty Bear
Vessel Model: Ta Yang Pilothouse Trawler
Join Date: Jan 2012
Posts: 41
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Bob sent you a PM. Will check in with you later.
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06-04-2012, 01:08 AM
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#7
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Guru
City: Vallejo, California
Vessel Name: Mahalo Moi
Vessel Model: 1986 Grand Banks 42 Classic
Join Date: Jun 2008
Posts: 2,093
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Try switching gauges from engine in question to the other engine even if you have to use jumper wires. That will tell you if the senders are faulty. Easier said than done, I know, but that would be the best way to troubleshoot.
__________________
Ray
"Mahalo Moi"
1986 GB-42 Classic
ΜΟΛΩΝ ΛΑβΕ
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06-04-2012, 01:18 AM
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#8
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Master and Commander
City: Vallejo CA
Vessel Name: Carquinez Coot
Vessel Model: penultimate Seahorse Marine Coot hull #6
Join Date: Sep 2010
Posts: 12,559
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Quote:
Originally Posted by weebobby
Mark, This was just as we idled down approaching the anchorage after a 7 hour run.
The alarm is just marked "engine alarm" and I am "assuming" it is a low oil pressure alarm but oil pressure and engine temps were OK and exactly the same as the other engine.
Bob
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Betcha something is wrong with your sensor(s). I'm assuming you've checked your oil/fluid levels. (Glad I've only one engine. Less to worry about.)
__________________
Kar-KEEN-ez Koot
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06-04-2012, 09:18 AM
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#9
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Senior Member
Join Date: Oct 2007
Posts: 323
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why not switch sending units and see what happens
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06-04-2012, 10:24 AM
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#10
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Guru
City: North Charleston, SC
Join Date: Sep 2010
Posts: 4,870
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Disconnecting an alarm buzzer is not a good idea unless you know for sure that there's a defective sender or circuit. You might have another engine problem and have no warning until it's too late.
capt jerry has the right idea for troubleshooting - swap the sending units and see if the "trouble" moves with the sender.
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06-04-2012, 10:28 AM
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#11
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Guru
City: North Charleston, SC
Join Date: Sep 2010
Posts: 4,870
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Quote:
Originally Posted by markpierce
Idling for a long time isn't good. My engine's builder (JD) says not to idle longer than five minutes.
[/INDENT]
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And yet big rigs and delivery trucks often idle for hours at a time. And of course, we boaters often endure "Idle Speed - No Wake" zones, sometimes several miles long.
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06-04-2012, 03:25 PM
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#12
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Guru
City: Whittier AK
Vessel Name: Apache II
Vessel Model: 1974 Donald Jones
Join Date: Oct 2007
Posts: 3,147
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A friend of mine had an alarm that kept going off.
He said he fixed it when I asked how and what he did .
He said I pulled the fuse.
OK.
SD
__________________
If you can't repair it maybe it shouldn't be on the boat
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