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Temperature Sensor

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billytee
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PostPosted: Tue Mar 26, 2013 21:02    Post subject: Temperature Sensor Reply with quote

As im doing the cooling system on my 1996, 2.8 paj, im going crazy and replacing all the bits, hoses, stats and sensors..
I was just wondering,
Does anyone know what the single blade sensor with the question marks is and what its for ??







Cheers  Wink
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charlieannear
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PostPosted: Tue Mar 26, 2013 21:04    Post subject: Reply with quote

I'd be interested to know as well!

What is the 'ECT' sensor?
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billytee
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PostPosted: Tue Mar 26, 2013 21:12    Post subject: Reply with quote

ECT is the Engine Coolant Temperature sensor.  

I may have to break into the loom to find out..
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kfieldin
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PostPosted: Tue Mar 26, 2013 21:28    Post subject: Reply with quote

hink it's the Temperature sender unit for the temp gauge.
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billytee
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PostPosted: Tue Mar 26, 2013 21:49    Post subject: Reply with quote

That was my first though too kfieldin but, the top sensor is the one that works my gauge, im now thinking it may be a stat for bringing the aircon fan on,
to aid the cooling for the rad like.  Confused
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davembp
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PostPosted: Tue Mar 26, 2013 22:10    Post subject: Reply with quote

Its the temp sensor that switches the air-con OFF at about 115deg C. The sensor on the head 'T' shaped terminals is temp guage and
glow plug ecu temp and also switches the air-con fan ON at about 110deg C, to aid cooling if this is of help.
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davembp
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PostPosted: Tue Mar 26, 2013 22:15    Post subject: Reply with quote

Oh yes, the one marked 'ECT' is the auto box temp (limp mode) sensor.
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billytee
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PostPosted: Tue Mar 26, 2013 22:29    Post subject: Reply with quote

i did have a sneeky feeling it might have brought the air con on/off as cooling aid.
ECT  i just assumed it was engine managment.
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Nvmpaj
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PostPosted: Tue May 07, 2013 1:11    Post subject: Reply with quote

Im needing this sensor fo my conversion you wouldnt happen know what temp rating it is , I have one that is 115 degrees
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PostPosted: Tue May 07, 2013 13:31    Post subject: Reply with quote

OFF @ 115dC and ON @ 108dC.
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Nvmpaj
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PostPosted: Tue May 07, 2013 21:03    Post subject: Reply with quote

Cool I can use the one I have then
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Lord Wighog
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PostPosted: Wed May 15, 2013 20:59    Post subject: Reply with quote

I'm interested in how this works as well, as I'm not sure mine is...

So you're saying that the one at the top of the photo marked "temp gauge sensor" actually does three things, dashboard temp gauge, glow plug ECU temp info AND switches the electric fan on at 108dC?

Also my car (an early '97 2.8 TD Shogun) doesn't appear to have the "off" sensor. It has one that looks like the ECT sensor in the photo, although it's on the right of the two, but the other hole just has a plug in it. Does that mean it only goes off when the coolant temp drops again or is the Shogun set-up different - I've read somewhere that the cooling system can vary depending on the original target sales region?
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Nvmpaj
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PostPosted: Wed May 15, 2013 21:23    Post subject: Reply with quote

I've been reading lots of info , with slightly differing info. there are sensors and or temp switches for the following
1. temp gauge
2. OD enable temp switch
3. glow plug  switch
4. ECT sensor (I'm thinking this tells the auto to go into limp mode if the engine gets too hot
5. Air Con switch
All this is on my ex diesel wiring loom so I'm going to trace each plug and confirm .
Some of the sensors do more than one operation ...........ie the temperature gauge and glow plug I think may be the "T" one , I'll have a play and get back on here later at the weekend
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khanaa
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PostPosted: Sun Aug 15, 2021 16:30    Post subject: Reply with quote

Nvmpaj wrote:
I've been reading lots of info , with slightly differing info. there are sensors and or temp switches for the following
1. temp gauge
2. OD enable temp switch
3. glow plug  switch
4. ECT sensor (I'm thinking this tells the auto to go into limp mode if the engine gets too hot
5. Air Con switch
All this is on my ex diesel wiring loom so I'm going to trace each plug and confirm .
Some of the sensors do more than one operation ...........ie the temperature gauge and glow plug I think may be the "T" one , I'll have a play and get back on here later at the weekend


This is an old thread and pictures uploaded to locate sensors are not accessible anymore. Can you please help my identify the temp sensor on 4M40 (Pajero-II) Right Hand Drive. OD is not engaged on AUTO mode (this still working in HOLD mode). I think I have the broken wire problem with OverDrive Temp Switch (AutoTransmission). Cannot locate any Blue/White wire as told in above discussion. I can see few sensor under the intercooler near the upper water connection for radiator. Being an old and many times repaired vehicle there are no visible labels and wire colors are faded or changed. Can you please share a picture in which OD temperature switch / sensor is marked?
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NDZ
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PostPosted: Thu Aug 26, 2021 15:11    Post subject: Reply with quote

You can bypass the OD sensor (single wire if you can find it!) directly to ground. My loom had a spare ground wire unused and it fit right in.
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