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excossack



Member Since: 22 Feb 2012
Location: North West
Posts: 5725

United Kingdom 1999 Defender 110 Td5 SW Caledonian Blue
Nanocom - over heat alarm
For the first time, I had the Nanocom plugged in doing a bit of data logging on the run home from Shell Island.
Part way through the trip, I heard beep beep beep beep. Turned out the Nanocom was alerting me to the engine temp being 92.5 deg c. At one point on the hills the temp got to 95 dec c and then dropped back down to around 88deg c on the descent.
On stopping at a garage the viscous fan was spinning, top hoses hot, but the bottom rad fins were cold?

This may have been happening for ages and not noticed (no Nanocom plugged in on other trips.)

Is this a normal engine temp ? Or anyone else had this before? 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock
Post #639133 23rd Jul 2017 11:02am
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roel



Member Since: 08 Aug 2009
Location: Lelystad
Posts: 2039

Netherlands 2003 Defender 90 Td5 PU Caledonian Blue
my normal temp is also around 88 - 92 deg depending on my driving style. You don't see that on the normal gauge. The normal gauge is steady till it gets to hot and then jump from the middle to the right corner. I didn't have my (old style) Nanocom connected when then happened so I don't know that temperature. But the numbers you gave don't look shocking to me.
My viscous fan is always turning, I never hear any difference. Roel

1984 90 2.5 na Diesel - RR V8 (1994-2001)
1997 Camel Trophy Discovery 300TDI (2001-2009)
2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts.
2003 90 Td5 (2009-now)
Post #639159 23rd Jul 2017 2:55pm
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Ian825



Member Since: 31 Oct 2016
Location: East Yorkshire
Posts: 11

England 2006 Defender 90 Td5 HT Zambezi Silver
I've had similar, checked out thoroughly, new rad, new stat x2, new pressure cap, pump checked, every water passage proved clear and clean, ended up doing the head as saw some minor cam damage while looking into it, injectors checked (because of cam damage) all rebuilt still very similar maybe lost a degree!! but still seeing temp similar to yourself. a friend has driven it and we think it may have a light remap this could possibly add a degree or two?? (I've only had it 10 months and don't use it every day) 38k miles.
I've gone through everything I can think of, it runs sweet as anything so I'm not looking any more!
If yours checks out I'd be prone to monitor it.
Ian
Post #639178 23rd Jul 2017 3:40pm
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JWL



Member Since: 26 Oct 2011
Location: Hereford
Posts: 3443

England 2002 Defender 110 Td5 SW Coniston Green
Nothing to worry about, I've had my Nanocom 1 plugged in today mainly out of curiosity on an hour long journey. The trip out in the cooler morning with a bit of hard country road driving with some good uphill pulls the highest I got was just into the early 90's. On the way back nearly 10'C warmer and on a couple of the longer pulls I got up to 95'C, that was hanging on in 5th and pulling hard, that's what I expect to see.
You can set the "warning" perameters of the Nanocom, with the Nanocom 1 it's easier when coupled to a laptop, I don't know about the newer one, can't see it being any different. With mine I've got it set at 110'C, it's getting warm by then and when you start getting over 115'C you're starting to get towards limp mode. The guage on the dash doesn't show much of this, when you get to 110 it might move the needle a little higher, then when you get over 115 it shoots up into the red and straight into limp mode.
I found this out over the years watching the Nanocom and temp guage when towing trailers up long hills in Wales with a radiator that was three parts blocked with Salisbury Plain cement in the fins Rolling Eyes
Post #639192 23rd Jul 2017 4:30pm
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excossack



Member Since: 22 Feb 2012
Location: North West
Posts: 5725

United Kingdom 1999 Defender 110 Td5 SW Caledonian Blue
Thanks JWL. My mind is at rest. With the Nanocom I am sure I can alter the alarm from within the box itself.

I have a new thermostat to go on as I am doing the coolant as well, so seems a good time to do it. (plus flushing the rad out at the matrix for good measure)

I did toy with changing the water pump as well....but not sure. 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock
Post #639357 24th Jul 2017 10:14am
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roel



Member Since: 08 Aug 2009
Location: Lelystad
Posts: 2039

Netherlands 2003 Defender 90 Td5 PU Caledonian Blue
I would worry at all. It looks good to me. My radiator isn't very clean either Smile Roel

1984 90 2.5 na Diesel - RR V8 (1994-2001)
1997 Camel Trophy Discovery 300TDI (2001-2009)
2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts.
2003 90 Td5 (2009-now)
Post #639607 25th Jul 2017 11:47am
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