Home > Technical (L322) > FBH Changeover Valve |
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Westridge177 Member Since: 12 Oct 2021 Location: Birmingham Posts: 21 |
Hi can anyone advise on accessing the FBH changeover valve on a 2011 TDv8
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19th Jan 2023 2:19pm |
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Discotigger Member Since: 12 Feb 2013 Location: Cumbria Posts: 804 |
There's loads of info on the FBH Changeover Valve on this thread:
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19th Jan 2023 3:37pm |
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Westridge177 Member Since: 12 Oct 2021 Location: Birmingham Posts: 21 |
Thanks for taking the time to reply.
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19th Jan 2023 4:38pm |
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Westridge177 Member Since: 12 Oct 2021 Location: Birmingham Posts: 21 |
Thanks again for responding, I will take a look for it tomorrow. When you say on the inner wheel arch is it accessible from the top of the engine bay, underneath or through the wheel arch. My symptoms are that it is not closing hence the fbh is trying to heat the whole block during parking heat operation. My understanding was that half of the heater (dual) valve kits would effect a repair but I’m here to learn. |
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19th Jan 2023 11:23pm |
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Discotigger Member Since: 12 Feb 2013 Location: Cumbria Posts: 804 |
Hi, sorry for the delay in responding. The FBH Changeover Valve is accessed from the engine bay. If you have a look on the wheel arch to the LHS of the engine you will see it bolted to the arch. There aren't any specific repair kits for the Valve, most kits are for repairing the twin heater control valves. The Changeover Valve is different in that it has a different piston setup inside. I managed to hunt down a cheap genuine valve, after having purchased a 'repair' kit which didn't work. |
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21st Jan 2023 9:19am |
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Westridge177 Member Since: 12 Oct 2021 Location: Birmingham Posts: 21 |
Thanks again for your input and the info that you can’t repair using seals from the dual valve kit. I’ve seen the genuine valve at over £300 and copy parts at 1/10th of that. As it’s not exactly a crucial part I’m tempted to have a punt.
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21st Jan 2023 10:22am |
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Haylands Member Since: 04 Mar 2014 Location: East Yorkshire Posts: 8176 |
That's a dilemma, how long does it take to change, if not long maybe worth a punt... Pete
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21st Jan 2023 10:36am |
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Westridge177 Member Since: 12 Oct 2021 Location: Birmingham Posts: 21 |
That’s a good point. I will have a proper look at the location before ordering |
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21st Jan 2023 11:06am |
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Discotigger Member Since: 12 Feb 2013 Location: Cumbria Posts: 804 |
That Valve, part no. LR016848 will fir your Fattie and should work ok. It's the same Part No. as the replacement valve I got when I had the problem with my heater. I was lucky enough to get a genuine one of fleabay for £140.00, but the cheaper ones will be pretty much the same quality as the genuine article.
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21st Jan 2023 2:27pm |
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jaguar3 Member Since: 25 Sep 2022 Location: Estonia Posts: 193 |
Why you dont like the engine block is also preheated? I doing exactly the same thing with my valve, fix it in open position forever. |
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22nd Jan 2023 7:55pm |
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AdrianL322 Member Since: 06 Sep 2022 Location: Ås Posts: 15 |
I also want to fix it permanently in the open position, how did you manage that? Just disconnecting the valve? 2012 Range Rover TDV8 4.4 |
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24th Jan 2023 10:44pm |
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jaguar3 Member Since: 25 Sep 2022 Location: Estonia Posts: 193 |
Here you can read how I do it
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25th Jan 2023 4:46am |
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Westridge177 Member Since: 12 Oct 2021 Location: Birmingham Posts: 21 |
Because when heating the block the cabin heater takes too long to become effective. Because with the fbh running for longer to assist the block the two heater control valves are overridden and stay open hence your hater controls are not effective. This is a common complaint on the Range Rover. Because here in the uk we never get temperatures that need the block heated. The vehicle is set up to kick this in at -20c. |
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29th Jan 2023 1:43pm |
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jaguar3 Member Since: 25 Sep 2022 Location: Estonia Posts: 193 |
Yes, thats true, RR have too big cabin, engine block, wrong air direction, so 20min (with older soft 30) heating time is not enough.
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29th Jan 2023 2:45pm |
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