 | Home > Td5 > 2006 Td5 110 temperature gauge jumping to red |
 
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5724  
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The gauge isn’t “real” it reads temp analogue up to just over half way, then shoots too max red when above that indicating an issue.
Do you think it was HOT? Not normal driving hot, but HOT, which is unusual for a Td5. Was your viscous fan fully locked up? Di you have AC, if so it should have activated the AC fan to run and assist in cooling. |
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7th Sep 2024 4:29pm |
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| Printerjohn Member Since: 12 Mar 2024 Location: Poole Dorset Posts: 23  
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Thanks, I have just reached under the plastic fan cowl, and with the engine now cold the fan turns easily. Can I assume that if when the engine is hot (and obviously switched off) the fan will be difficult /impossible to move.
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7th Sep 2024 6:58pm |
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| MadTom Member Since: 10 Sep 2013 Location: Olomouc Posts: 623  
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You will hear working viscous fan, even inside of Defender. It is like a small helicopter, and with idling engine, you can feel hot air on your feet standind behind the car.
On the other side, I had the fan workin only when it was outside like 30°C or more and I was driving up a steep hill very slow speed. "Drobek" = The Small One - Discovery 2, "Blufínek" = The Blue Thing - Defender 130, and for me at least Ford Mondeo  |
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8th Sep 2024 6:00am |
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| Printerjohn Member Since: 12 Mar 2024 Location: Poole Dorset Posts: 23
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In that case the fan is not operating. So can I assume that I have an electrical fault, ie temperature sender intermittent?
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8th Sep 2024 9:20am |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5724
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The fan if running (locked up), you KNOW it’s. It makes a lot of noise. It rarely has to operate in my experience.
The fan is powered by the engine and uses a viscous hub. If yours isn’t operating then a check/replacement viscous hub is the place to go. |
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8th Sep 2024 10:41am |
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| Printerjohn Member Since: 12 Mar 2024 Location: Poole Dorset Posts: 23
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I will see if the fan is getting any stiffer to turn when the engine is at it's normal running temperature. Would that be a way to check if the fan is serviceable?
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8th Sep 2024 10:50am |
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| Jabberwocky Member Since: 27 Oct 2021 Location: Luxembourg Posts: 223 
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Best way to see if the fan is operating as it should it to see if you can stop it with a balled up rag, be careful but with the cowl off and the fan spinning gently touch it with a balled up rag and gradually apply pressure, if you can stop it easily your fan is knackered, replace it with a new one. If it is knackered it will stop with not much pressure, like I say be careful, don’t go at it like a bull in a China shop.
I’m having the same needle flicking up to red and then going straight back down issue with my TD5, after replacing pretty much everything I’m now thinking it’s electrical, possibly an ECU issue or a chafed wire. I’m almost done with the whole thing to be honest. |
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8th Sep 2024 7:05pm |
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| Printerjohn Member Since: 12 Mar 2024 Location: Poole Dorset Posts: 23
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Will take a look at it tomorrow, thanks for the advice.
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8th Sep 2024 7:43pm |
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| Penfold_6290 Member Since: 22 Sep 2021 Location: Dorset Posts: 319 
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If your diagnosis shows the fan is working correctly consider earthing the case of the ECU to the chassis or direct to the battery. Occasionally a poor earth can cause the temp gauge to spike and the vehicle to lose power.
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13th Sep 2024 12:54pm |
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| jimbo55 Member Since: 15 Jul 2020 Location: Midlands Posts: 399
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Get the engine fully heat soaked with everything up to temperature and then try to turn the fan with the engine off, if it spins easily the fans knackered, if it puts up resistance then it is working. It’s a much safer and easier way of testing it than trying to stop the spinning fan with a rag or anything
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13th Sep 2024 2:22pm |
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| Printerjohn Member Since: 12 Mar 2024 Location: Poole Dorset Posts: 23
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Have tried that, and with engine hot the fan is running. I then stopped the engine and tried turning the fan by hand, and it turns very freely. With Nanocom connected the coolant temperature varies between 96 and 107. Most of the time at 98. Do you need the special long spanner tools to remove the fan or can you use normal spanners (what size). We are in Bordeaux at the moment, where would be the best place to get a replacement fan here in France?
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17th Sep 2024 4:00pm |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5724
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The spanner’s are available as a special item but any 36mm spanner and a good tap with a hammer will do the job. The proper spanner set has one spanner to hold one part, as you undo the fan, but a tap works.
Your temps don’t appear silly high to me 98-100c is about what I would expect. |
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17th Sep 2024 5:07pm |
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| Printerjohn Member Since: 12 Mar 2024 Location: Poole Dorset Posts: 23
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My wife who was sat with the nanocom on her knee says the highest wasn't 107 it was 112. I am trying to find some wire to check if there might be an earthing problem with the Ecu.
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19th Sep 2024 9:06am |
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| Justtellme Member Since: 23 Nov 2015 Location: Ottawa Posts: 310  
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Had the TD5 jump into the red twice in my 9 years of ownership.
1. Serpentine belt snapped due to tensioner seizing up…still got hot even though it was -30c…no water pump due to broken belt. Replaced belt, tensioner and all pulleys. 2. leaking injector o rings or cracked head added about 4 extra liters diesel to the sump and the extra friction caused the temp gauge to jerk into the red. Took about 30 min on side of highway to figure out the dipstick was showing high and the oil smelled like diesel. Replaced with new AMC head. Hopefully your cause is something simple and easy to sort out. Patrick |
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24th Sep 2024 7:47pm |
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