Evening everyone
My 2011 4.4 tdv8 decided it wanted to release some coolant it’s dripping sort of under the fuel filter area but a little further back
Not sure where about if I’m honest. I will post some pictures even though it doesn’t show any coolant but it may get someone to point me in the right direction
Without the aid of a surgical mirror it’s impossible to see I’m thinking
Thanks in advance

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Your fuel cooler is on the offside of the fuel filter. Check that and the hoses running to and from.

Behind the front wheel arch is the fuel burning heater which will also cycle coolant. To have a proper look you'll need to take the wheel off and the plastic arch lining out. You'll know if the coolant is coming from above the fuel burning heater or not.

Otherwise I can't think of any coolant hoses on this side of the engine. 2015 Range Rover Autobiography 4.4 SDV8

Hi. The fuel cooler is the stainless looking thing just by the fuel filter with is it about 4 hoses going to it. Seems to me that is to high from where it is dripping. The fuel burning heater does that have water going to it at all times as part of the cooling system. If so I can see the wheel and liner coming off Saturday. Thanks for the insight 2016 4.4 diesel

I'm unsure how the coolant cycles through the FBH but it's certainly hooked up to the cooling system of the engine because it will heat and cycle it in very cold temperatures before the engine runs.

Also remove the radiator splash shield and have a good look around from above and below.

When you remove it, you'll see the transmission fluid cooler bottom centre of the engine. That's also worth checking. 2015 Range Rover Autobiography 4.4 SDV8

Its definitely coming from the ns. It drips on top of ns driveshaft so discounts the radiator area. The fbh seems like a good shout 2016 4.4 diesel

So. After removing the arch liner I have now discovered it’s nothing to do with the fbh. It’s definitely coming from the rubber hoses beneath the fuel filter that head to some metal pipes leading to the cabin. Is it the heater control valve that sits in this area too
Also as the wheel has been off,does anyone know what the torque setting is for the wheel nut off hand please 2016 4.4 diesel

130-150Nm for the wheel nuts.

Must be the hoses leading to the heater core? 2015 Range Rover Autobiography 4.4 SDV8

Last edited by garyRR on 5th Sep 2022 7:40pm. Edited 1 time in total

The heater control valve lives down there and has pipes going to and from it. At least it does on my 2007 car. I’ve never had cause to look at the 2012.

David. 2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2007 Range Rover Supercharged in Java Black with Ivory Leather
2012 Range Rover 5.0 SC Autobiography in Indus Silver with Jet/Ivory Interior
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior

Mines a 3.6 but had a water leak which lead to some metal pipes......

https://www.fullfatrr.com/forum/topic58611.html

So quick update

Seems like it is definitely the metal pipe that has a leak that is in the link in the above post 700 quid oh my word. I can see it being changed to rubber. It’s in exactly the same spot
Thanks for everyone who has assisted. I will have to wait until next week to reassemble when I get hold of some hose

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As you've got it off, take it to a fabricators and get the hole quickly welded? Can't see they'd want more than £30 for that. 2015 Range Rover Autobiography 4.4 SDV8

I was thinking about getting it welded. But for the faffing about. What if it finds another weak spot 2 months down the line. I was also thinking cutting the bad bit out and replace with rubber. But again what if it goes again soon. 2016 4.4 diesel

I'm unsure why it's got a hole in it anyway.

It's a stainless steel part. It's either had some damage like a drill slip? Or the vehicle's been run for long periods of time with water in the cooling system and not distilled water and glycol changed every 3-5 years. 2015 Range Rover Autobiography 4.4 SDV8

I know it’s mad. It took ages to find because rather than a drip it would spray but not a vast amount. Pretty confident that this is what is causing the issue
I wouldn’t have thought a drill slip due to the location of the pipe. But who knows. Stranger things have happened 2016 4.4 diesel

That's not stainless, not swaged like that - there's be a million fractures in it. Alu most likely, looking at the discoloured areas around the hole, either electrolytic corrosion or an inclusion in the alloy reacting with the coolant. Personally, I'd change the assembly or next-best, get some hose spigots and a length of reinforced coolant hose to replace the bad section in the assembly.
The coolant in LR's hasn't been Glycol based for some time, it's OAT and has a life of ~10 years - don't mix it, pink/orange is OAT, blue is Glycol based