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ttuck3r



Member Since: 03 Feb 2013
Location: Dunning Scotland
Posts: 277
Scotland 1999 Defender 90 Td5 HT Caledonian Blue
Heat gauge reacting to throttle response.
Hello all, this morning on my way to work I noticed my temp gauge was moving to the input of the accelerator, if i revved her the needle moves instantly down to the cold end and as the Rev stabilises ( to idle ) the needle returns to proper operation position. I will be posting a video, can anyone shed some light please.
Post #376379 4th Dec 2014 6:22pm
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ttuck3r



Member Since: 03 Feb 2013
Location: Dunning Scotland
Posts: 277
Scotland 1999 Defender 90 Td5 HT Caledonian Blue
Here is the video of what happens.
Post #376386 4th Dec 2014 6:38pm
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ickle



Member Since: 22 Jul 2010
Location: South Vendee
Posts: 1728
France 2008 Defender 110 Puma 2.4 CSW Alpine White
Bad earth??? Block to chassis / body
Post #376413 4th Dec 2014 7:48pm
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munch90



Member Since: 26 Oct 2013
Location: guildford
Posts: 3558
England 
I would go with bad earth , or there used to be voltage stabiliser on the back of the gauge cluster that could effect the needles but normally would effect fuel gauge as well but also now days alternators are a bit smoother output then years ago , so I would start with earths checking

also might be worth checking alternator voltage, just in case
Post #376416 4th Dec 2014 7:55pm
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ttuck3r



Member Since: 03 Feb 2013
Location: Dunning Scotland
Posts: 277
Scotland 1999 Defender 90 Td5 HT Caledonian Blue
Well I got to the bottom of my fault that was causing my temp gauge to fluctuate with input from the accelerator, it only took a month and a half.
Post #390061 19th Jan 2015 12:35am
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mk1collector



Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6769
England 2004 Defender 110 Td5 CSW Bonatti Grey
And it was?
Post #390062 19th Jan 2015 12:39am
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leeds



Member Since: 28 Dec 2009
Location: West Yorkshire
Posts: 8578
United Kingdom 
Come on spill the beans!


Brendan
Post #390063 19th Jan 2015 12:40am
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ttuck3r



Member Since: 03 Feb 2013
Location: Dunning Scotland
Posts: 277
Scotland 1999 Defender 90 Td5 HT Caledonian Blue
Haha, so I was installing a new LED light bar and red bison boomslang headlight loom, when running wiring through the bulkhead just behind the dash through an existing grommet and that's when I noticed two wires just behind the brake booster on spade connectors were apart which I connected up and forgot about it, I didn't think anything of it but when I went to test the light on a wee drive, low and behold no more fuel gauge rev counter 👍
Post #390092 19th Jan 2015 8:55am
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ickle



Member Since: 22 Jul 2010
Location: South Vendee
Posts: 1728
France 2008 Defender 110 Puma 2.4 CSW Alpine White
So the earth terminal on the bulkhead was off?
Post #390282 19th Jan 2015 7:26pm
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ttuck3r



Member Since: 03 Feb 2013
Location: Dunning Scotland
Posts: 277
Scotland 1999 Defender 90 Td5 HT Caledonian Blue
well according to the workshop manual this isn't a recorded earthing point, the earthing point is on a ring crimp bolted to the firewall, so I have no idea what this is for!


Click image to enlarge
Post #390371 19th Jan 2015 9:51pm
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