Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 20-04-2015, 12:15   #1
Registered User

Join Date: Oct 2011
Location: Winter Bahamas - Summer BC
Boat: Lagoon 450, Bavaria Vision 40
Posts: 615
Volvo D2-40B Additional temperture sender

I want to add an additional temperature sender for an instrument on a Volvo D2-40B. Mine only has the sound when things get too hot.

I have not found a suitable port yet.
roetter is offline   Reply With Quote
Old 20-04-2015, 13:46   #2
Senior Cruiser
colemj's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,049
Images: 12
Re: Volvo D2-40B Additional temperture sender

Just plumb a "T" into the fitting for the hose going to the water heater and install the sensor in that. If you don't have a water heater, use that port.


You do not need a parachute to skydive. You only need a parachute to skydive twice.
colemj is offline   Reply With Quote
Old 20-04-2015, 19:54   #3
Registered User

Join Date: Nov 2014
Posts: 607
Re: Volvo D2-40B Additional temperture sender

When VP changed from the D2-40A to the D2-40B the main change was the introduction of the MDI (mechanical diesel interface) system. This system allows a mechanical engine to interface with the same canbus gauge instrumentation system as used in the larger electronic engines in the VP line, even though the D2-40 engine itself is not electronic.

What this means is that the "temp sender" which is already installed in your engine is not a normal temp alarm switch which opens and closes, but is a thermistor which sends varying resistance values to the MDI box depending on the engine temp. When the MDI circuit sees a resistance value that corresponds to "over heat" it sounds an audible alarm and lights the high temp light in the alarm instrument or illuminates the alarm in the tach window.

If you want to install a temp gauge, all you have to do is source the proper gauge, (metric or US), and hook it up to the daisy chain harness which is already connected to the tachometer. The temp information is already flowing on the canbus, and the gauge will display it.

If you want to get a bit fancier, you could buy an NMEA 2000 gateway and connect the engine data into your vessel NMEA 2000 bus and display all the engine data on your compatible chart plotter.

Have fun.
DougR is offline   Reply With Quote


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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
Engine Temperture Jaguar2728 Engines and Propulsion Systems 18 19-04-2015 04:20
Acceptable Operating Temperture Range for Large-Frame Alternators Dockhead Electrical: Batteries, Generators & Solar 12 21-01-2014 07:41
Temp Alarm Sender for Volvo Penta islandrunner70 Engines and Propulsion Systems 4 09-08-2012 09:17
Volvo TAMD 40B - Reviews and Comments? jamesns Product or Service Reviews & Evaluations 0 27-05-2012 11:45
Volvo TAMD 40B - Reviews and Comments? jamesns Engines and Propulsion Systems 0 27-05-2012 11:40

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 23:47.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.