SailNet Community - Reply to Topic

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Diesel > Yanmar YM oil pressure alarm failure
 Not a Member? 


Thread: Yanmar YM oil pressure alarm failure Reply to Thread
Title:
  

By choosing to post the reply below you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:
 

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Additional Options
Miscellaneous Options

Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Topic Review (Newest First)
06-27-2013 06:07 PM
mark2gmtrans
Re: Yanmar YM oil pressure alarm failure

The oil pressure sender is located on the engine above the oil filter. It is directly on the block and is slightly below and to the rear of the fuel pump. If you are standing in front of the engine, looking just above the oil filter you should see the wire going to it. If you find it is bad, it is a very simple fix and you should be able to do it in just a few minutes.

You will find the diagrams on page 12 of your owners manual...here


http://yanmar.com/product/marineplea...V2_21JAN09.pdf


Send me a PM if you have further questions.

Mark
06-27-2013 05:54 PM
BellaCoola
Re: Yanmar YM oil pressure alarm failure

Hi CTLOW---Disconnect wires one at a time and see which light does not go on when you turn switch before starting. Your oil sender will be low on your block, probably just near you fill line or above.
I'm trying to find fittings that go metric 10mm to 1/8 pipe standard so I can put an oil pressure guage on too alongside the sender as I have great pressure but sender goes off sometimes , even after changing !!. I know there was a post re this somewhere ????
07-27-2011 10:18 PM
ctlow
Yanmar YM oil pressure alarm failure

The latest is that I jiggled everything I could find both on the engine block and on the back of the instrument panel, and nothing worked to restore the alarm.

The next day, however, and ever since, the alarm (and light) has worked. So if I take it in, it will all be working and they won't want to fiddle with it.

-sigh-

Where is the oil pressure sensor on the block, anyway? I can follow all sorts of wires - sort of - but can't convince myself which one is which and can't find a diagram of it. 3YM20.

Thank you.

Charles
07-07-2011 08:59 AM
ctlow
Yanmar YM oil pressure alarm failure

Hello, saillife.

It simply started working again, and I have neglected to check into it. My bad. I had better have a look at the panel wiring - that alarm is a critical component.

Thanks for jogging my memory!

Charles
07-06-2011 07:32 PM
saillife Did you have any luck finding your problem? I too have an intermittent problem with the alarm. Mine seems to work once the engine is warm. I'm thinking it's the sender but, it could be heat improving a contact via expansion.
06-11-2011 07:27 AM
ctlow All very helpful. Will investigate and hope to report back. Thanks to all.
06-09-2011 08:50 PM
JimsCAL If you remove the wire from the oil pressure switch and ground it, the alarm should sound (if the key is on). That would test the switch.
06-09-2011 04:18 PM
casey1999 The wire harness have splice connectors- open them up and check for corrosion. Also some of these connectors at the panel. Spray with anti corrosion spray. Trace the wires from the panel to the oil pressure switch- the switch should be located around the oil filter- looks like a 1/2 pipe plug with a wire comming out the top. The water temp switch looks the same but located around the thermostat towards the top of the engine.
06-09-2011 09:50 AM
SVCarolena They way you describe it, it is most likely is a problem in the panel switch. I'd start there with a multimeter before going to the sender. Is is very uncommon for a sender to go bad, particularly on an interment basis like you describe. On the other hand, the panel and switch are exposed to the elements, so there could be corrosion inside.
06-09-2011 04:43 AM
ctlow
Yanmar YM oil pressure alarm failure

The other day my oil pressure alarm failed. This is when starting and stopping the engine, the light should come on and the audible whistle activate.

I had this on a charter sailboat recently, too, and then it suddenly self-corrected.

Mine self-corrected too, by flipping the ignition switch from OFF to ON several times (engine not running!). It faltered at first, the light sputtering and the alarm sounding "dirty" and weak, and then suddenly they were both fine again.

I had been working around the engine and wondered if I had knocked a wire loose, but can't find one.

Is this something common or well-known, and easily user-serviceable?

I note that one can buy a replacement oil-pressure sensor, but don't know where it is on the engine itself, to even inspect it.

Thank you.

Charles

Yanmar 3YM20

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


All times are GMT -4. The time now is 02:30 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.