 | Home > Td5 > Water temperature gauge show going hot |
 
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| RF3777 Member Since: 10 Apr 2015 Location: Hong Kong Posts: 144   
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These days the TD5 water temperature gauge niddle move over the middle to the red zone, sometimes just a bit over the middle, but sometimes goes closed to the red zone, but it goes back to the middle after few minutes??? Then will go over middle again...
Does it mean it's electricle error, or something else! I did cold check no coolant lost! 
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19th Aug 2015 9:21am |
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| ttuck3r Member Since: 03 Feb 2013 Location: Dunning Scotland Posts: 277  
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i do hope this is not the case with you but mine did this and at the same time i noticed my heating inside was getting quite hot and then slowly got cooler then hot again, found my expansion bottle an hoses very hard and then after about 3 months my head went. keep an eye on the heating...
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19th Aug 2015 6:44pm |
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| RF3777 Member Since: 10 Apr 2015 Location: Hong Kong Posts: 144
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What was the problem?
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20th Aug 2015 1:10am |
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| roel Member Since: 08 Aug 2009 Location: Lelystad Posts: 2039  
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If your td5 rally gets hot it will first move a little higher, like yours shows and then suddenly jump to the red zone. So that is a normal behaviour, but as yours jumps up and down quickly I would suggest, like as said before, to check/change the temp sensor.
If it really gets hot the ecu will reduce power and it will take some munites before the temp gauge will go down. 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) |
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20th Aug 2015 7:40am |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5864  
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This is what mine was doing
1999 Defender TD5 110 Regards John M0VAZ Econet Station 48 no clock |
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20th Aug 2015 7:45am |
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| RF3777 Member Since: 10 Apr 2015 Location: Hong Kong Posts: 144
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I have check both fans works, a small fan start to work after air con turn on, anything to do with air con?
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20th Aug 2015 9:47am |
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| RF3777 Member Since: 10 Apr 2015 Location: Hong Kong Posts: 144
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So your TD5 getting cold  |
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20th Aug 2015 9:48am |
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| Redlinemike Member Since: 27 Oct 2013 Location: Frozen north, Just off the M8 Posts: 100 
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run an additional earth from the ecu mounting plate to the battery,
it "should" cure that problem of the guage moving about on its own 110 XS DC M57 + 8 Speed auto ORA jeep- Sold Tomcat 88 |
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20th Aug 2015 11:33am |
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| RF3777 Member Since: 10 Apr 2015 Location: Hong Kong Posts: 144
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Redline kid, would you teach me how to make the earth point to ECU and battery?
Little update, the temperature niddle move to a bit cold side when I turn on the heater, how funny? |
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20th Aug 2015 11:39am |
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| Redlinemike Member Since: 27 Oct 2013 Location: Frozen north, Just off the M8 Posts: 100
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to easily prove /disprove take a langth of wire approx 5ft long, i normally use 2 core & terminate both ends together, small 6mm ring terminal at the ecu side & a 8mm ring at the battery side,
remove one of the ecu mounting bolts & secure the cable to it, on the battery side connect the other end to the NEGATIVE post on the battery, basically you are bypassing any flaws in the earth path between the ECU & battery, 110 XS DC M57 + 8 Speed auto ORA jeep- Sold Tomcat 88 |
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20th Aug 2015 11:43am |
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| Disco_Mikey Member Since: 16 Nov 2014 Location: Dundee Posts: 531 
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As above. Common issue on the Td5
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20th Aug 2015 11:46am |
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| RF3777 Member Since: 10 Apr 2015 Location: Hong Kong Posts: 144
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The battery is on the passages side, and the ECU is on the driver side... How can I connect the cable from battery negative to ECU bolt? |
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20th Aug 2015 4:29pm |
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| Disco_Mikey Member Since: 16 Nov 2014 Location: Dundee Posts: 531
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By running a new wire...
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20th Aug 2015 5:59pm |
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| RF3777 Member Since: 10 Apr 2015 Location: Hong Kong Posts: 144
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Done this morning
Click image to enlarge Click image to enlarge Click image to enlarge |
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21st Aug 2015 2:47am |
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