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furianer

Member Since: 06 Feb 2011
Location: Coomberdale Western Australia
Posts: 27

Puma temperature gouges, do all lie ?

Good morning, just come across this.

One of my customers is running a 110 TD4 2007 Modell so far covert 185.000km. The truck is used to tow a trailer cross 3500kg most days.
On a warm one like today, high 20°, charging up a steep hill, the engine goes into limpmode, temp gouge shoots up to high for a couple of seconds then drops back to normal, engine regains power, car is up and running again.

We fitted a temp. sensor externally , hooked the car up to a obd reader, engine temp. varies from 60° to 112° land rovers temp. gauge shows just normal temperature, so you could just about cook this piece of ford engineering without knowing. Engine hits limp mode by 112°, power is back by 108°

Viscous hub was shot, replaced with a TD5 one, they are same, hope this solves the problem.

stay cool and have a nice day

Richard

11th May 2011 7:51am

pumajake

Member Since: 11 May 2011
Location: Denmark
Posts: 1

2007 Defender 90 Puma 2.4 HT Galway Green

Hello
I have the same suspicions. Wrecked on the highway because the vacuum pump broke. The water boiled and the temperature gauge showed what it used to display. Approximately in the middle.

11th May 2011 9:58am

MK

Member Since: 28 Aug 2008
Location: Santiago
Posts: 2420

2007 Defender 110 Puma 2.4 SW Chawton White

The temp dial stays in the middle from app 84º and ca.110ºC. Perhaps the customer should go on a lower gear to get more revs for the fan and less fuel injected. It works for me. Puma 110" SW

.............................................................
Earth first. Other planets later

11th May 2011 11:00am

furianer

Member Since: 06 Feb 2011
Location: Coomberdale Western Australia
Posts: 27

pumajake wrote:
Hello
I have the same suspicions. Wrecked on the highway because the vacuum pump broke. The water boiled and the temperature gauge showed what it used to display. Approximately in the middle.

Did the engine go in to limp mode when it happen.

what kind of damage did yit do to the engine?

cheers Richard

11th May 2011 11:51am

furianer

Member Since: 06 Feb 2011
Location: Coomberdale Western Australia
Posts: 27

MK wrote:
The temp dial stays in the middle from app 84º and ca.110ºC. Perhaps the customer should go on a lower gear to get more revs for the fan and less fuel injected. It works for me.

thanks
so what would be the point of having such a tem. gauge, there is no warning at all before the engine is just about going in to a melt down.

There is not much chose for gears if you have to pull 3.5 to up a swiss mountain pass

Could this be software related i guess the signal for the dial is feed trough the engine managment system.

Hope not all TD4s are running this hot without the driver being aware of.

cheers Richard

11th May 2011 11:58am

qwert

Member Since: 26 Aug 2010
Location: Switzerland
Posts: 33

2015 Defender 110 Puma 2.2 Heritage Edition SW Grasmere Green

If it is an "Engine Coolant Temperature Gauge" on dash then it is either sensor or SW:

"The ECT gauge is driven by high speed CAN bus messages from the ECM."
(from Workshop, page 884 ). No info in there on type of a sensor or tests/calibrations.

11th May 2011 1:05pm

MK

Member Since: 28 Aug 2008
Location: Santiago
Posts: 2420

furianer wrote:
MK wrote:
The temp dial stays in the middle from app 84º and ca.110ºC. Perhaps the customer should go on a lower gear to get more revs for the fan and less fuel injected. It works for me.

thanks
so what would be the point of having such a tem. gauge, there is no warning at all before the engine is just about going in to a melt down.

There is not much chose for gears if you have to pull 3.5 to up a swiss mountain pass

Could this be software related i guess the signal for the dial is feed trough the engine managment system.

Hope not all TD4s are running this hot without the driver being aware of.

cheers Richard

No, nothing happened. I think all Pumas are the same. The other solution would be to fit a pair of extra fans. I do not know if you can set them to start at 100ºC or so. Puma 110" SW

.............................................................
Earth first. Other planets later

11th May 2011 2:26pm

dgardel

Member Since: 30 Nov 2008
Location: Veneto (Heart & Head)
Posts: 3586

All moder cars have this "Strategy" on showing the engine temperature (golf, BMW, ....)

and all modern engines works "around" 95-105 °C, for a higher thermodynamic efficiency. Discovery 5 td6 HSE Stornoway Gray Outback Engineering Limited Edition

IID Pro MV License

11th May 2011 4:58pm

BigMike

Member Since: 13 Jul 2010
Location: Lancashire
Posts: 2253

More for my own interest than a particular problem, how can you tell if the viscous hub has failed? (apart from considering it an option in terms of diagnosing).

11th May 2011 5:15pm

mse

Member Since: 06 Apr 2008
Location: UK
Posts: 5038

2016 Defender 110 Puma 2.2 XS CSW Scotia Grey

Its always been for me when the engine is warm it offers more resistance to spin than cold Mike

11th May 2011 5:21pm

BigMike

Member Since: 13 Jul 2010
Location: Lancashire
Posts: 2253

The manual says fuse 29 is the one - cant find a layout of the fusebox to say which is which number though. I want to just check mine as its been running a little warm

eta, found it. for anyone else its the second bank from the left, 3rd fuse down - yellow 20 amp.

11th May 2011 5:25pm

BigMike

Member Since: 13 Jul 2010
Location: Lancashire
Posts: 2253

and would the engine management light not come on in the event of a failed cooling fan?

11th May 2011 5:46pm

mse

Member Since: 06 Apr 2008
Location: UK
Posts: 5038

THe main fain is viscous the air con fan is electric.

It used to be the aircon fan would activate to support the viscous in an overheat condition Mike

11th May 2011 6:14pm

furianer

Member Since: 06 Feb 2011
Location: Coomberdale Western Australia
Posts: 27

BigMike wrote:
More for my own interest than a particular problem, how can you tell if the viscous hub has failed? (apart from considering it an option in terms of diagnosing).

there is a hard core bush way of testing the visco, don t try this at home, this can be lethal !!!!
take the plastic cowling of, have piece of soft timber ready 2by 4 about 1.5metr long will do, start your engine, keep it reving at around 2500rpm, keep checking temp. with a obd reader, you can hear the visco locking up as the engine heats up, careful try to slow the fan with the piece of timber, flat side to the end of the blades, if the hub is past its use by date you can bring the fan to a stop, if it is ok, it keeps spinning.

this is not a advise,

Just borrow a new visco from your local land lover workshop, do a testrun, obd reader in hand, see if temp. stays the same as with your unit.

Richard

11th May 2011 6:57pm

BigMike

Member Since: 13 Jul 2010
Location: Lancashire
Posts: 2253

Interesting, thanks. How did you attach the external temp sensors and what are they?

Actually come to think of it I dont think my fan is spinning at all which might well be the problem.

11th May 2011 6:59pm

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