Member Since: 15 Jan 2010
Location: Chorley, Lancs.
Posts: 100
Engine Temperature Warning Light Problem
Hi, having an intermittent problem with my engine temperature gauge on my 2005 Disco 3 2.7d auto in that the gauge will suddenly ping up to the top (usually after a bit of driving and the engine is probably warm) and the red warning light come on and the fan kicks in. If you pull over, turn off the engine then turn it back on again (even immediately) the gauge drops back to the bottom and stays there even when you set off again and the fan switches back off? If you open the bonnet there is no smell of overheating at all, and i have no idea what the issue is. It has done it 4 times in the last 4 weeks. Any help would be appreciated???
Ta
Kevin
13th May 2010 10:22 pm
01coccobet
Member Since: 23 Feb 2009
Location: on air
Posts: 2624
2p
did you check the water level in hte expansion tank?
cheersfiguring it out!!!!
the best feeling:getting airborne.
14th May 2010 5:59 pm
jambo1972
Member Since: 15 Jan 2010
Location: Chorley, Lancs.
Posts: 100
Hi, a few months ago I had to top up the expansion tank as it was sitting below minimum, will check that again! Thanks
15th May 2010 8:27 am
DiscoBlack
Member Since: 26 Mar 2010
Location: Sheffield, UK
Posts: 23
Keep getting the same problem, usually have to run the car for an hour or so, stop at services, and when I continue the warning light and cooling fan come on. If I then stop the engine and re-start the car its ok for 20 minutes then same problem, a real pain when driving on the motorway as its not always easy to re-start the engine at 70mph
I've checked the coolant level and this looks ok.
14th Jun 2010 10:18 am
DiscoStu
Member Since: 09 Apr 2006
Location: London
Posts: 11412
Member Since: 26 Mar 2010
Location: Sheffield, UK
Posts: 23
Thanks - but I dont think its an overheat problem, the gauge goes from the bottom to top instantly, then immediatly switch off engine and back on all is normall - for a while.
Looks to me to be more of a sensor problem as collant levels are fine.
14th Jun 2010 4:09 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72787
Did that when my turbo went terminal, that among other symptoms.
14th Jun 2010 4:14 pm
DiscoBlack
Member Since: 26 Mar 2010
Location: Sheffield, UK
Posts: 23
f k, I hope not, no warranty
14th Jun 2010 4:25 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72787
It's the only circumstances where I've seen it so it may be a coincidence and hasn't reocurred since.
14th Jun 2010 4:29 pm
DiscoStu
Member Since: 09 Apr 2006
Location: London
Posts: 11412
DiscoBlack wrote:
Thanks - but I dont think its an overheat problem.
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72787
Hopefully just D3 having a minor hissyfit, which is not unknown!
14th Jun 2010 4:33 pm
Trackman
Member Since: 16 Apr 2010
Location: Glasgow
Posts: 430
Is it the temperature sensor wire going to ground ?
In cars of old the temperature guage came of a regulated supply, through the meter then the sensor (thermistor) to ground.
If it still is like this I would look for a wire thats lost its insulation somewhere
Ian.
14th Jun 2010 10:31 pm
jambo1972
Member Since: 15 Jan 2010
Location: Chorley, Lancs.
Posts: 100
Temp sensor now fixed!
Found out the problem with mine was with a broken sensor (was split in 2!), engine temp was perfect but the sensor was knackered. Whilst the car was in with Pete at Bell Autos to get the EGR blanking kit fitted i mentioned the temp gauge issue and he said he would have a look for me. He found the broken sensor and replaced it whilst doing the valve blanking at no extra charge. Not had a problem with it since and the car is like a different beast with the faulty EGR valves blanked off. Big thanks to Pete, brilliant service and knowledge. Well worth the day off and the 3hr round trip to see him.
15th Jun 2010 8:48 pm
DiscoBlack
Member Since: 26 Mar 2010
Location: Sheffield, UK
Posts: 23
Glad to here you got yours sorted.
Any idea (anyone) where the sensor is so that I can take a look ?
Thanks
5th Jul 2010 10:10 am
DiscoBlack
Member Since: 26 Mar 2010
Location: Sheffield, UK
Posts: 23
Went to the dealers and had it checked as it ws getting worse, temp going into red and fans kicking in every 15-20 minutes.
Nothing showed up on test book - so I suggested they replace the sensor, which was ordered and fitted the next morning - excellent service as I was going away for the weekend and needed the car.
Everything working ok - apart from my sat nav now saying it isnt installed!.
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k, I hope not, no warranty 
