Diesel Fuel Gauge - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Chat  
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
 Not a Member? 
  #1  
Old 07-31-2011
Member
 
Join Date: Mar 2008
Posts: 37
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
SawWhet is on a distinguished road
Diesel Fuel Gauge

We have a 1997 Beneteau 321 with a Yanmar 3GM30F -VDO fuel level gauge plus a combined oil pressure /engine hour meter
The fuel gauge is staying on the full mark all the time with no movement .
The gauge will show empty when key is turned off All connectors,fuse ect.at back of gauge are in good condition
Any suggestions as to what the problem is and where would I get spare parts if needed.
Thanks
Reply With Quote Quick reply to this message Share with Facebook
  #2  
Old 08-01-2011
MacGyverRI's Avatar
Senior Member
 
Join Date: Nov 2007
Location: East Providence, R.I.
Posts: 360
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 8
MacGyverRI is on a distinguished road
It could just be a bad connection, clean them 1st.
Next, could be a stuck swing arm on the float but that requires taking the sender out of the tank to check it.

Some gauge senders also use a "pulse" type power supply unit (works like a turn signal flasher) to get a reading and that could be bad if equipped w/ one. The boat elec. schematic would show it inline w/ the power supply.
__________________
Ken, East Prov., R.I. Bootlegger, PY26 Paceship

If you like my posts, or they were helpful, please click the "scales" icon on top right to add Rep points.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Quick reply to this message Share with Facebook
  #3  
Old 08-01-2011
Maine Sail's Avatar
Senior Member
 
Join Date: Jan 2003
Location: Maine Coast
Posts: 5,691
Thanks: 17
Thanked 169 Times in 133 Posts
Rep Power: 16
Maine Sail is just really nice Maine Sail is just really nice Maine Sail is just really nice Maine Sail is just really nice
Your VDO gauge is likely a standard 240-33 Ohm unit. First measure your sender to see what the OHM reading is. Simply put your meter across the center pin and the aluminum top of the gauge to measure the resistance.

If the reading on the sender never changes, bad sender.. Any Teleflex fuel gauge should easily replace that VDO or you can get another VDO gauge. Most all, unless it is one of the European VDO senders & gauges use the 240-33 Ohm scale. The gauges simply read resistance.

If replacing the sender consider a mechanical with electric capsule or WEMA type as they FAR more reliable than the standard sending units.
__________________
______
-Maine Sail / CS-36T


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.




© Images In Posts Property of Compass Marine Inc.


Reply With Quote Quick reply to this message Share with Facebook
  #4  
Old 08-19-2011
Mad Bavarian
 
Join Date: May 2007
Posts: 33
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
BigNige is on a distinguished road
Quote:
Originally Posted by Maine Sail View Post
Most all, unless it is one of the European VDO senders & gauges use the 240-33 Ohm scale.
My VDO sender is 3 to 300 Ohms, and the gauge reads full scale if the sender is disconnected.
__________________
--
Nigel
See new
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
- it's FREE!
Reply With Quote Quick reply to this message Share with Facebook
  #5  
Old 08-20-2011
JimsCAL's Avatar
Senior Member
 
Join Date: May 2007
Location: Glen Cove, NY
Posts: 2,549
Thanks: 2
Thanked 50 Times in 45 Posts
Rep Power: 8
JimsCAL is on a distinguished road
I agree with Mainesail. The vast majority of fuel gauge systems are as he describes. My guess would be the sender is since the gauge does read both full and empty. Disconnect the wires at the tank and measure the resistance with a DMM as Maine suggests.
Reply With Quote Quick reply to this message Share with Facebook
Reply

Quick Reply
Message:
Options

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

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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Cat 42 fuel gauge problems Konaschultz Catalina 0 05-11-2010 06:10 PM
fuel gauge -- any suggestions? pegasus1457 Diesel 24 11-28-2009 03:01 PM
Fuel Gauge Morgan 30 Twoowls Gear & Maintenance 8 11-18-2009 02:02 AM
Fuel Gauge questions rikhall Gear & Maintenance 20 01-02-2009 10:22 PM
Fuel Gauge Problems trodzen Gear & Maintenance 14 09-05-2007 08:23 AM


All times are GMT -4. The time now is 04:51 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2015, 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.