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kevin50

Temprature Rising

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Another of my Problems that's just came up. 

300Tdi, out of Disco. Got it up and running couple of months ago after been stood about 10 years, New Timing belt, Water Pump Clutch. Only ever started it for a few minuets at a time.
Let it run for a good 5 to 10 minuets for the first time, Temp Gauge Needle started to rise slowly until it reached the red mark within this time., does it every time now. Does not loose any water at all , not that I can see anyway. I have the Correct Sender in which is Defender AMR3321 black.
Not got a clue when it comes to Engines , I've Probably done something wrong along the way.
Any Ideas as how this is happening ?

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I'd check the thermostat - throw a new genuine one in with the vent hole / jiggle pin.

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2 minutes ago, FridgeFreezer said:

I'd check the thermostat - throw a new genuine one in with the vent hole / jiggle pin.

Put new one in today Mate, wasn't Genuine Mind. Anyway, Cant try it until tomorrow. one of the bolts was rounded from Previous owner so had a right job getting the Dam thing off, and in my Buckets full of nuts and bolts there was Not 1 of these. gonna try my local Landy shop tomorrow for them, they are FS108251 M8 x 25, but could I just use same size bolt with washer if I cant get them ?

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I'd say you need to verify the actual temp somehow. If the gauge is in the red then the hoses should all be pretty hard to the grasp.

I've usually never been able to get a diesel up to temperature just by idling an engine, generally always had to take them for a short drive to get them up.

Temp senders do age and stopped working correctly, they're not expensive,I'd reccomend you swap it out for new or a known good one.

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Laser thermometers and/or temperature indicator labels are cheap ways to verify.

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Tdi's are usually not running very hot.

As suggested, get an IR gun to see what the gauge tells you is actually correct

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Check also your belt that drives the water pump, if it’s very loose it could cause it to overheat. 

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With all the fiddling inside the dash, I’d say your most likely cause is the earth from the gauges is faulty, so the cases are building up a charge and causing over indication.  It’s a common enough problem when the earth is disconnected or gets corroded.

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You say you’ve got the right sender... but is this a car that was previously NOT a 300tdi? 

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Posted (edited)

Kev, on back of the gauges, make sure the live & signal wires are not touching the gauges U clamps, if it does the gauge goes straight to full scale reading when power is applied.

Edited by western

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Posted (edited)

Well Bought new Sender fitted new Thermostat. still the same, was just about to go home in Bad Mood then looked at thread and seen posts about earths.

Had a good look but I cant see anything wrong, but not really sure what Im looking for, Pic here if anyone can notice anything.

Anyway I ran an Earth straight from dial to Earth point in Bulkhead and the Needle went back down only Moving when I took earth off one end.

So I am really hoping ot is just an Earth Problem and nothing Serious.🤔

IMG_20200522_184035.jpg

IMG_20200522_184057.jpg

Edited by kevin50

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upper right of all 3 photo's is a disconnected plain black earth wire with a male bullet terminal, this needs to be connected to it's mate, 

Quote

Anyway I ran an Earth straight from dial to Earth point in Bulkhead and the Needle went back down only Moving when I took earth off one end.

the gauge earths under the knurled thumb nuts look clear & not touching any other terminals.

I think you may need the sender unit that was fitted to the original TD engine as it worked ok with the existing gauge.

the 300tdi senders have different gauges.

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20 minutes ago, western said:

upper right of all 3 photo's is a disconnected plain black earth wire with a male bullet terminal, this needs to be connected to it's mate, 

the gauge earths under the knurled thumb nuts look clear & not touching any other terminals.

I think you may need the sender unit that was fitted to the original TD engine as it worked ok with the existing gauge.

the 300tdi senders have different gauges.

With this Conversion Disco In to Defender the Defender Sender has to be used Black Top, as the Disco Blue Top does not work with Defender Gauge.  I did have Black Top in but changed it anyway for same, with Thermostat.

Can you remember in my Electrics Thread we discussed this Black with Male Bullet , I looked and Looked but could not find a Mate to connect it with.  

So do you think  this Problem with Earthing ? and not Overheating. ?

 

 

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You need the sender to match the gauge. So you either need one of the conversion senders from Steve Parker, or you need the sender from the original engine. 

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Would be worth connecting that black wire to the earth point on engine side of the bulkhead with all the others

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15 minutes ago, landroversforever said:

You need the sender to match the gauge. So you either need one of the conversion senders from Steve Parker, or you need the sender from the original engine. 

The Conversion Kits from Steve Parkers would work but this way is much cheaper,  This  Info is from  here http://www.glencoyne.co.uk/tdig3003.htm  Temperature sender - the Disco sender will not work with the Defender gauge.  Replace with a standard Defender 300TDi sender (AMR3321)

They Also. Specialise in Tdi Conversions 

21 minutes ago, western said:

Would be worth connecting that black wire to the earth point on engine side of the bulkhead with all the others

Im sure I tried that, and Nothing happened,will have another go tomorrow though. Couldn't  get the Battery Gauge to work neither if you remember  unless I ran earth from It to Bulkhead.

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You need 300tdi gauge.

300tdi sender doesn’t read correctly with Td gauge. It doesn’t even read correctly with 200tdi gauge.

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17 minutes ago, oneandtwo said:

You need 300tdi gauge.

300tdi sender doesn’t read correctly with Td gauge. It doesn’t even read correctly with 200tdi gauge.

I have Origional Defender Gauge and am using  Defender Temp Sender which is AMR3321 Black Top rather then the Disco AMR1425 Green Top as they say the Green Top does not work with Defender Gauge.

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And what we’re saying is you need the TD sender in the engine to match the gauge. None of the 300tdi senders are any good. 

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13 minutes ago, kevin50 said:

I have Origional Defender Gauge and am using  Defender Temp Sender which is AMR3321 Black Top rather then the Disco AMR1425 Green Top as they say the Green Top does not work with Defender Gauge.


AMR3321 BLACK TOP ONLY WORKS WITH 300TDI DEFENDER GAUGE 1994-1998.

AMR3321 BLACK TOP WONT WORK WITH “ORIGINAL DEFENDER GAUGE” FROM A 19J

AMR1425 GREEN TOP WONT WORK WITH ANY DEFENDER GAUGE FROM ANY YEAR UNLESS TD5 DASH FITTED.

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Posted (edited)
34 minutes ago, oneandtwo said:


AMR3321 BLACK TOP ONLY WORKS WITH 300TDI DEFENDER GAUGE 1994-1998.

AMR3321 BLACK TOP WONT WORK WITH “ORIGINAL DEFENDER GAUGE” FROM A 19J

AMR1425 GREEN TOP WONT WORK WITH ANY DEFENDER GAUGE FROM ANY YEAR UNLESS TD5 DASH FITTED.

Please Forgive me Everyone, Im hopeless with things like this.

My Defender is WAS 1987 110 2.5  So which Sender will work or will I have to change Gauge.

Edited by kevin50

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You need to find a gauge out of an old 300tdi defender, or get an adaptor to reuse your original sender with the 300tdi engine (if there is such a thing)

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No worries Kev, if you don't know, that's what the forum is for to help & share information.

 

300tdi temperature gauge is AMR2631 https://www.ebay.co.uk/sch/i.html?_from=R40&_nkw=AMR2631&_sacat=0&LH_TitleDesc=0&_dmd=1&rt=nc which will work with the 300tdi sender you have now

OR

the sender from the original TD engine is PRC6663  https://www.ebay.co.uk/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=PRC6663&_sacat=0 which will work with your existing temp gauge.

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...Or just get a VDO gauge and sender if you actually want to know how hot it is.

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22 minutes ago, cackshifter said:

...Or just get a VDO gauge and sender if you actually want to know how hot it is.

Will have a look at these.

 

43 minutes ago, western said:

No worries Kev, if you don't know, that's what the forum is for to help & share information.

 

300tdi temperature gauge is AMR2631 https://www.ebay.co.uk/sch/i.html?_from=R40&_nkw=AMR2631&_sacat=0&LH_TitleDesc=0&_dmd=1&rt=nc which will work with the 300tdi sender you have now

OR

the sender from the original TD engine is PRC6663  https://www.ebay.co.uk/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=PRC6663&_sacat=0 which will work with your existing temp gauge.

Will The PRC6663 fit / be the same Thread as my 300tdi ??

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