↓ Advertise on Defender2 ↓

Home > Td5 > Water temperature gauge show going hot
Post Reply  Down to end
Page 1 of 2 12>
Print this entire topic · 
RF3777



Member Since: 10 Apr 2015
Location: Hong Kong
Posts: 144
Hong Kong 2003 Defender 110 Td5 USW Corris Grey
Water temperature gauge show going hot
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!
Mr. Green

Post #447303 19th Aug 2015 10:21am
View user's profile Send private message View poster's gallery Reply with quote
excossack



Member Since: 22 Feb 2012
Location: North West
Posts: 5745
United Kingdom 1999 Defender 110 Td5 SW Caledonian Blue
My gauge had a habit of bouncing around, normal to hot to cold back to normal. In the end I replaced the coolant temp sensor by the top hose/cylinder head side and that cured it. 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock
Post #447345 19th Aug 2015 1:23pm
View user's profile Send private message View poster's gallery Reply with quote
ttuck3r



Member Since: 03 Feb 2013
Location: Dunning Scotland
Posts: 277
Scotland 1999 Defender 90 Td5 HT Caledonian Blue
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...
Post #447490 19th Aug 2015 7:44pm
View user's profile Send private message View poster's gallery Reply with quote
RF3777



Member Since: 10 Apr 2015
Location: Hong Kong
Posts: 144
Hong Kong 2003 Defender 110 Td5 USW Corris Grey
What was the problem?
Post #447574 20th Aug 2015 2:10am
View user's profile Send private message View poster's gallery Reply with quote
roel



Member Since: 08 Aug 2009
Location: Lelystad
Posts: 2039
Netherlands 2003 Defender 90 Td5 PU Caledonian Blue
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)
Post #447603 20th Aug 2015 8:40am
View user's profile Send private message View poster's gallery Reply with quote
excossack



Member Since: 22 Feb 2012
Location: North West
Posts: 5745
United Kingdom 1999 Defender 110 Td5 SW Caledonian Blue
This is what mine was doing

 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock
Post #447607 20th Aug 2015 8:45am
View user's profile Send private message View poster's gallery Reply with quote
RF3777



Member Since: 10 Apr 2015
Location: Hong Kong
Posts: 144
Hong Kong 2003 Defender 110 Td5 USW Corris Grey
I have check both fans works, a small fan start to work after air con turn on, anything to do with air con?
Post #447648 20th Aug 2015 10:47am
View user's profile Send private message View poster's gallery Reply with quote
RF3777



Member Since: 10 Apr 2015
Location: Hong Kong
Posts: 144
Hong Kong 2003 Defender 110 Td5 USW Corris Grey
excossack wrote:
This is what mine was doing


So your TD5 getting cold Rolling with laughter
Post #447649 20th Aug 2015 10:48am
View user's profile Send private message View poster's gallery Reply with quote
Redlinemike



Member Since: 27 Oct 2013
Location: Frozen north, Just off the M8
Posts: 93
Scotland 2004 Defender 110 Other XS DCPU Auto Bonatti Grey
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
Post #447683 20th Aug 2015 12:33pm
View user's profile Send private message View poster's gallery Reply with quote
RF3777



Member Since: 10 Apr 2015
Location: Hong Kong
Posts: 144
Hong Kong 2003 Defender 110 Td5 USW Corris Grey
Redline kid, would you teach me how to make the earth point to ECU and battery? Bow down
Little update, the temperature niddle move to a bit cold side when I turn on the heater, how funny? Mr. Green
Post #447686 20th Aug 2015 12:39pm
View user's profile Send private message View poster's gallery Reply with quote
Redlinemike



Member Since: 27 Oct 2013
Location: Frozen north, Just off the M8
Posts: 93
Scotland 2004 Defender 110 Other XS DCPU Auto Bonatti Grey
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
Post #447687 20th Aug 2015 12:43pm
View user's profile Send private message View poster's gallery Reply with quote
Disco_Mikey



Member Since: 16 Nov 2014
Location: Dundee
Posts: 531
Scotland 2009 Defender 110 Puma 2.4 DCPU Keswick Green
As above. Common issue on the Td5 Thumbs Up
Post #447688 20th Aug 2015 12:46pm
View user's profile Send private message View poster's gallery Reply with quote
RF3777



Member Since: 10 Apr 2015
Location: Hong Kong
Posts: 144
Hong Kong 2003 Defender 110 Td5 USW Corris Grey
Redlinemike wrote:
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,


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?
Post #447766 20th Aug 2015 5:29pm
View user's profile Send private message View poster's gallery Reply with quote
Disco_Mikey



Member Since: 16 Nov 2014
Location: Dundee
Posts: 531
Scotland 2009 Defender 110 Puma 2.4 DCPU Keswick Green
By running a new wire...
Post #447793 20th Aug 2015 6:59pm
View user's profile Send private message View poster's gallery Reply with quote
RF3777



Member Since: 10 Apr 2015
Location: Hong Kong
Posts: 144
Hong Kong 2003 Defender 110 Td5 USW Corris Grey
Done this morning


Click image to enlarge


Click image to enlarge


Click image to enlarge
Post #447902 21st Aug 2015 3:47am
View user's profile Send private message View poster's gallery Reply with quote
Post Reply  Back to top
Page 1 of 2 12>
All times are GMT + 1 Hour

Jump to  
<  Previous Topic | Next Topic >
Posting Rules
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



Site Copyright © 2006-2024 Futuranet Ltd & Martin Lewis
DEFENDER2.NET RSS Feed - All Forums