Member Since: 30 Jan 2012
Location: Banbury
Posts: 202
Cheers Robbie.
12th Dec 2012 8:47 am
Martin Site Admin and Owner
Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 18506
Fudpucker wrote:
Exclamation marks are not usually used to signify a friendly comment.
Well I apologise if that's how you've taken the comment but that was not the intention, I was trying to be helpful.06 D3 SE / 15 LR D90 XS SW / 88 LR 90 Td5 / 68 BMW 2000 ti
Any issues with the site let me know!
12th Dec 2012 9:22 am
Fudpucker
Member Since: 30 Jan 2012
Location: Banbury
Posts: 202
Thank you but no need to apologise. This is the problem sometimes with the impersonal nature of emails, forum messages etc - that the way they are intended and the meaning behind them can be easily misunderstood. As others stated on the message string - at least my fbh is working on these cold mornings
12th Dec 2012 9:31 am
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8154
Getting back to the OT when you girls have finished arguing. Does it actually save fuel turning the heater off and running with an engine that is not up to working temperature? IMHO it don't, if it does the engine is not performing at it's best, surely the sensors are sensing the temperature of everything and saying to the ECU it's cold give the injectors more fuel, i.e. it is under fueled. Consider the days of the petrol engine and running on choke for 5 miles.
If the heater is turned off during a journey will that not switch the FBH off.It can when others can't,
It will when others won't,
It goes where others don't.
M3DPO....
why should the FBH come on when the engine is clearlyup to temp ?...it can only waste derv
OK the system may detect the temp of the whole shebang is lower than it should be.....if you didnt have a FBH the engine would have to be used to hot the system up...maybe running the engine at less than optimum uses more fuel than the FBH coming in & being used ?
Realistically you can never find the difference out...as each vehicle & set of running conditions is different...
On the whole my D3 gets torunning temperature very swiftly..with none of the "wont go into this gear" situations as per Disco2...everytime it did this I thought there was something wrong.
However the Disco2 had better control of the climate system (by far)BREXIT - done properly.
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12th Dec 2012 12:11 pm
B16 KJR
Member Since: 10 Jul 2006
Location: Rosyth, Fife
Posts: 3005
Quote:
If the heater is turned off during a journey will that not switch the FBH off.
I seem to remember that in order for the FBH to start in the first place, the heater must be switched on, otherwise if the cabin AAC is not asking for heat, then the FBH will not deliver it (might be wrong though)
12th Dec 2012 12:15 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
Kinda right. If the ATCM is selected off or fails then a bundle of systems that it controls are inoperative, but is nothing to do with a call for cabin heat per se. Can't see why anyone would select ATCM off though in normal use.Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 10 Jul 2006
Location: Rosyth, Fife
Posts: 3005
I never turn mine off, but there was quite a discussion a few years back about the role of the FBH. Some maintained it was there purely to bring the engine coolant up to temp quicker, whilst others maintained it was there purely to ensure quicker heat for the cabin and that was why, if the AAC was switched off, the FBH would not start.
I don't suppose it matters either way as the FBH does both, but the OP asked if by turning off the AAC, the FBH would also turn off, it would appear so, although I can't see why you would want to do so
13th Dec 2012 1:34 pm
DG Site Moderator
Member Since: 12 Dec 2005
Location: The Gaff
Posts: 50967
FFBH is all about supplementing the provision of heat to the cabin ...if you just left it to the engine then you'd be mighty chilly this time of the year 21 year LR veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018 > DS HSE R-Dynamic P300e 2021
13th Dec 2012 1:48 pm
B16 KJR
Member Since: 10 Jul 2006
Location: Rosyth, Fife
Posts: 3005
So it would appear that its primary function is to provide heat to the cabin quicker, if so, then it follows that if the cabin heater is not calling for heat, then the FBH does not activate, so switching it off should deactivate it.
13th Dec 2012 2:00 pm
2DISCO3ORNOT
Member Since: 27 Apr 2009
Location: at sea
Posts: 1209
While were on the subject Im just out of the car FBH obviously running fine because I have the usual cabin full of fumes, am I just oversensitive to them or do I have the circulation setting wrong?
13th Dec 2012 2:10 pm
DG Site Moderator
Member Since: 12 Dec 2005
Location: The Gaff
Posts: 50967
There was a TSB a good few years ago about FFBH fumes in the cabin
EDIT here it is : LA412-002, VIN range 5A000360-6A380334 - pre 2007 models I think 21 year LR veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018 > DS HSE R-Dynamic P300e 2021
13th Dec 2012 2:18 pm
wiggs
Member Since: 03 Sep 2006
Location: Manchester
Posts: 14372
M3DPO wrote:
I don't have any prob with fbh(famous last words), my heater has always kicked in at 4*, I have just had the car serviced and it now kicks in with an ice motif before it at 5 degrees, this shows the temp it kicks in must be adjustable with the correct tool,- Failtmate?
Another interesting point, there is no legal reason why the FBH cannot be run on red diesel providing a separate fuel tank is used soleley for this purpose
no you cant change the FBH cut in tempG4 Gone ...but not forgotten
13th Dec 2012 2:32 pm
B16 KJR
Member Since: 10 Jul 2006
Location: Rosyth, Fife
Posts: 3005
Do you have a link to that TSB ? Mine has always smelt in the cabin as well
13th Dec 2012 4:33 pm
tj2k
Member Since: 20 Nov 2012
Location: Cheshire
Posts: 79
All, I've read a few threads about the FBH prior to purchasing my recently acquired D3 (BTW Hello all!) and in many threads, inc. this one, I've heard / read references to a "cloud of smoke" / steam or, basically varying observations / descriptions around the exhaust from the FBH.
So in my case, I have the BAS FBH kit (very happy with it I am too) and I am regularly starting mine (FBH via BAS) up prior to starting the engine & driving away & it works very well. But it doesn't seem to produce any visible smoke / steam / water vapour / exhaust. The exhaust is noticiably smelly as you'd expect - slightly diesel-exhaust smell (not that I deliberately sniff it of course ) but it doesn't "smoke". I've noticed this in varying weather types (i.e. wet/dry/frost - always below 2c). Of course, the engine pre-warms before it is started and the heater (when the fan starts after starting the engine) - is hot.
I retro fitted an Eberspacher to a Defender 90 G4 LE I used to own, with a bi-directional comms remote control and (that also operated the heater / fans within the cab) - that too, didn't "smoke" much either. There was, when it first started, a very small-scale boiling-kettle-like jet from the aluminium exhaust - but this was barely noticeable and was clear as soon as it'd been running for a few seconds.
I have heard of people seeing plumes of smoke?
Perhaps this is down to environmental conditions during usage?? Different countries perhaps? I've only seen mine in usage at -5 degrees - perhaps other peeps are -10-20 odd!
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
) but it doesn't "smoke". I've noticed this in varying weather types (i.e. wet/dry/frost - always below 2c). Of course, the engine pre-warms before it is started and the heater (when the fan starts after starting the engine) - is hot.
