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Grockle



Member Since: 24 Nov 2008
Location: Peak District National Park
Posts: 2266

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Tonga Green
temp gauge needle...
...starts to rise up the gauge then falls to the bottom, any ideas chaps? 2.4 90 XS
1968 1/32 scale Britains 109 Pick up.
Post #281240 11th Nov 2013 2:41pm
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Lorryman100



Member Since: 01 Oct 2010
Location: Here
Posts: 2686

My first port of call would be the CHT sensor. If available plug in a diagnostic tool and check the CHT reading on the live data page to see if it corresponds with the temp needle movements. If that is not the cause then you can move onto the next possible issue. Thumbs Up
Post #281295 11th Nov 2013 6:18pm
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bell-auto-services



Member Since: 08 Jul 2007
Location: North Yorkshire
Posts: 2232

United Kingdom 2013 Defender 110 Puma 2.2 USW Orkney Grey
Does the rev counter fall at the same time as the temp guage ? After the temp guage has fallen does it jump back up or does it move up slowly ?

Pete
Post #281300 11th Nov 2013 6:22pm
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Grockle



Member Since: 24 Nov 2008
Location: Peak District National Park
Posts: 2266

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Tonga Green
Hi Pete and Lorryman,

No just the temp gauge, someone mentioned the sender unit in the block could have developed a fault,
as eng temp rises the gauge goes up slowly then falls rapidly then sometimes to rise again then fall. 2.4 90 XS
1968 1/32 scale Britains 109 Pick up.
Post #281490 12th Nov 2013 7:54am
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Lorryman100



Member Since: 01 Oct 2010
Location: Here
Posts: 2686

Grockle unplug the CHT (Cylinder Head Temperature) sensor plug and clean the plug contacts with electrical contact cleaner to see if that rectifies the fault. If not then it is an easy enough job to swap out the CHT with a new one. Thumbs Up



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Post #281597 12th Nov 2013 3:55pm
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Grockle



Member Since: 24 Nov 2008
Location: Peak District National Park
Posts: 2266

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Tonga Green
Cheers LM is it easy to remove the plastic rockerbox cover ? 2.4 90 XS
1968 1/32 scale Britains 109 Pick up.
Post #281611 12th Nov 2013 4:57pm
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Lorryman100



Member Since: 01 Oct 2010
Location: Here
Posts: 2686

Yes it is only 2 x M6 bolts at the front of the block. You may need to wiggle it a bit around the injector pipes. Thumbs Up
Post #281632 12th Nov 2013 6:03pm
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Grockle



Member Since: 24 Nov 2008
Location: Peak District National Park
Posts: 2266

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Tonga Green
thanks again LM for your help Thumbs Up 2.4 90 XS
1968 1/32 scale Britains 109 Pick up.
Post #281791 13th Nov 2013 7:58am
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Grockle



Member Since: 24 Nov 2008
Location: Peak District National Park
Posts: 2266

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Tonga Green
all sorted, had a look but it was freezing, so took it to the local garage in Hartington, all in £29.00 Thumbs Up 2.4 90 XS
1968 1/32 scale Britains 109 Pick up.
Post #282706 16th Nov 2013 4:09pm
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Lorryman100



Member Since: 01 Oct 2010
Location: Here
Posts: 2686

Grockle, what caused the fault?
Post #282715 16th Nov 2013 5:13pm
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