 | Home > Td5 > Intercooler fan |
 
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| bpman Member Since: 21 May 2008 Location: Oslo Posts: 8069  
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If it's got ac then I might be the aircon fan - standard electric fan in front of aircon rad / intercooler / rad
Do you have a picture ? Are you experiencing this with the ac off ? |
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15th Nov 2014 7:05am |
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| CDN38 Member Since: 14 Nov 2014 Location: Courtenay, BC Posts: 729  
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Yes, it's got A/C. The fan stays on at all times, even with A/C off.
I'll post a picture once I get a chance |
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15th Nov 2014 2:06pm |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5642 
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Sounds more like you've got an AC problem and that is causing fan to continually run.
Pull the AC fuse and see if it stops. Andy |
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15th Nov 2014 2:55pm |
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| CDN38 Member Since: 14 Nov 2014 Location: Courtenay, BC Posts: 729
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So it defiantly shouldn't be running with the A/C off? Hmm must be a sensor or switch issue.
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15th Nov 2014 2:59pm |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5642
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No. Although I believe if the engine temp is very high the ECU can activate the fan to assist with cooling, but normally only on when AC switched on.
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15th Nov 2014 3:11pm |
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| CDN38 Member Since: 14 Nov 2014 Location: Courtenay, BC Posts: 729
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Hard to think of the engine ever getting hot... Gets warm, but hot is on the wish list.
I'll try pulling the A/C fuse and see what we get. |
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15th Nov 2014 3:17pm |
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| Fatboy Slim Member Since: 04 Feb 2008 Location: Bridgend Posts: 1006 
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You'll find you have a logged fault for a temperature sensor. Clear it and all will return to normal
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15th Nov 2014 5:47pm |
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| Lorryman100 Member Since: 01 Oct 2010 Location: Here Posts: 2686 |
landyandy is spot on about the AC fan running as part of the EMS overheating strategy on Defenders fitted with A/C. Have you carried out any diagnostic checks? I would be curious to know what the readings/live data are from the CHT sensor?
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15th Nov 2014 6:47pm |
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| CDN38 Member Since: 14 Nov 2014 Location: Courtenay, BC Posts: 729
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Going to take it in on Monday and plug it in.
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15th Nov 2014 6:49pm |
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| Lou Sparts Member Since: 15 Apr 2012 Location: Kent Posts: 1501  
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I believe the A/C fan should normally cut in when the ambient temperature is above 28 degrees C ( not very often in the uk). I hope someone hasn't wired the fan to run continuously to disguise an engine temperature issue ! 2005 Td5 90 XS
Steve |
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15th Nov 2014 7:14pm |
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| MadTom Member Since: 10 Sep 2013 Location: Olomouc Posts: 614  
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A/C fan si controled by the TD5 engine ECU. I was written here - check engine ECU for faults. When TD5 engine goes over temperature it started the A/C fan and will start it again every time engine is running.
With Nanocom you can also test the fan - it can energize it for a short time. "Drobek" = The Small One - Discovery 2, "Blufínek" = The Blue Thing - Defender 130, and for me at least Ford Mondeo  |
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15th Nov 2014 7:28pm |
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| ozzy57 Member Since: 14 Feb 2014 Location: Farnborough Posts: 221 
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An overheating fault or a faulty sensor will cause the A/C Dan to run constantly. Clear the fault and/or replace the sensor should cure the issue. It wasn't me!
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17th Nov 2014 10:34pm |
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| Fatboy Slim Member Since: 04 Feb 2008 Location: Bridgend Posts: 1006
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I've had this happen several times in the past with flat batteries or a jump start causing the temp sensor fault. Clear it and all returns to normal
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18th Nov 2014 7:18pm |
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