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johnnyd



Member Since: 13 Apr 2013
Location: Chippenham
Posts: 1006

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
Defender TD5 1998 interior heater
Hi all

Just thinking about driving my truck in winter for the first time.....it doesn't seem to shove out much heat in the cab, is there a known reason for that? Temp gauge reads normal all the time so I guess about 85/87 degrees, but nothing like that in the cab, the fan works (both speeds) just not much heat, I thought the point of having a landy was winter fun Laughing

JD 2008 TDCi 2.4 XS CSW
Post #254136 28th Jul 2013 5:28pm
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diesel_jim



Member Since: 13 Oct 2008
Location: hiding
Posts: 6092

United Kingdom 2006 Defender 110 Td5 SW Epsom Green
Check that the blend cables are adjusted properly, so when you select "hot" the lever on the heter actually moves all the way to the hot position.
Post #254143 28th Jul 2013 5:49pm
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jimbob7



Member Since: 06 Jul 2013
Location: uk
Posts: 2055

Insulate it with camping mats from tesco, and seal off the cab from the bulkhead back I wrapped insulating foil around the dog guard which is the best way to keep the heat in.As above, make sure the heater cables are in good condition,can still take a few miles before you feel any heat blowing through.
Post #254218 28th Jul 2013 8:21pm
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Litch



Member Since: 10 Mar 2013
Location: Oxfordshire
Posts: 762

England 
Most common problem is the control cables being out of adjustment or just plain siezed.
Confirm the cables are working ok (i.e. the outer is clamped into position and not moving with the inner) and then make sure that when the lever is at the top (or bottom) of travel that the flap is also in the correct position, more often than not the flap is not sealing correctly.

Not a difficult thing to resolve and with any luck you should have a very safisfactory heater for nil-cost in under 15-minutes. ONE LIFE, GET IT!
Post #254232 28th Jul 2013 8:43pm
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johnnyd



Member Since: 13 Apr 2013
Location: Chippenham
Posts: 1006

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
OK hot and cold cable was loose at the box side, does the vent lever in the cab operate the bracket on the side of the box in the engine? That doesnt seem to move, although i can't tell what is or isn't moving on my own Rolling with laughter 2008 TDCi 2.4 XS CSW
Post #254693 30th Jul 2013 4:33pm
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adafish



Member Since: 30 Mar 2009
Location: atherstone
Posts: 1382

United Kingdom 1984 Defender 110 300 Tdi DCPU Stornoway Grey
I used to remove the in/out pipes on box and flush thru with water....then, like the rest say, check for cable slack. Putting Dreams on Drives at JLR Solihull..
Post #254698 30th Jul 2013 4:44pm
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diesel_jim



Member Since: 13 Oct 2008
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Posts: 6092

United Kingdom 2006 Defender 110 Td5 SW Epsom Green
johnnyd wrote:
OK hot and cold cable was loose at the box side, does the vent lever in the cab operate the bracket on the side of the box in the engine? That doesnt seem to move, although i can't tell what is or isn't moving on my own Rolling with laughter



No, the one on the "side" of the heater box, is controlled by the fan lever (off/1/2), when you push the lever up all the way to the up position, it moves that lever on the heater and shuts off a large flap on the back of the heater box (where it bolts up to the bulkhead)

The hot/cold lever connects to the top of the heater, and the screen/feet lever vaguely connects to some flaps in the bulkhead that feeds the air up or down.
Post #254719 30th Jul 2013 5:48pm
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johnnyd



Member Since: 13 Apr 2013
Location: Chippenham
Posts: 1006

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
Ah ok, thanks Jamie....that probably means I have it all working now I think, just need to check the screen/feet lever behaves as it should.

JD 2008 TDCi 2.4 XS CSW
Post #254727 30th Jul 2013 6:22pm
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johnnyd



Member Since: 13 Apr 2013
Location: Chippenham
Posts: 1006

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
OK Heat deffo works now on the way to work Wink

And the 2 speed fan.....

But all the air seems to come out of the window vents rather than anywhere else, so the direction lever is not doing its stuff

Big Cry 2008 TDCi 2.4 XS CSW
Post #255147 1st Aug 2013 5:42am
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johnnyd



Member Since: 13 Apr 2013
Location: Chippenham
Posts: 1006

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
OK...how easy is it to fix the baffle that directs heat to either the windscreen or the cab floor, the lever doesn't seem to move anything, and the air is always on the windscreen, i'm baffled ..... Rolling with laughter 2008 TDCi 2.4 XS CSW
Post #258110 12th Aug 2013 10:17am
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LandRoverAnorak



Member Since: 17 Jul 2011
Location: Surrey
Posts: 11324

United Kingdom 
From memory, the flap that directs air either up or down is an integral part of the lower dash. The whole of the lower dash is essentially a large plenum chamber.

It's not a complicated mechanism, but you've got to strip out a significant portion of the dash to get to it.

Oh, and if you do get that far, then a worthwhile mod is to introduce a restriction into the passenger side demister vent. Because it's nearer to the fan then the bulk of the air goes straight up through it, leaving less to reach the drivers side. By restricting the passenger side to about half its' cross-sectional area, the air flow is much better balanced and the drivers side demister works better. Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia


Last edited by LandRoverAnorak on 12th Aug 2013 10:37am. Edited 2 times in total
Post #258121 12th Aug 2013 10:30am
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johnnyd



Member Since: 13 Apr 2013
Location: Chippenham
Posts: 1006

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
Hmmm not what i wanted to hear Big Cry No time no time..........

JD 2008 TDCi 2.4 XS CSW
Post #258123 12th Aug 2013 10:34am
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jimbob7



Member Since: 06 Jul 2013
Location: uk
Posts: 2055

LandRoverAnorak wrote:
From memory, the flap that directs air either up or down is an integral part of the lower dash. The whole of the lower dash is essentially a large plenum chamber.

It's not a complicated mechanism, but you've got to strip out a significant portion of the dash to get to it.

Oh, and if you do get that far, then a worthwhile mod is to introduce a restriction into the passenger side demister vent. Because it's nearer to the fan then the bulk of the air goes straight up through it, leaving less to reach the drivers side. By restricting the passenger side to about half its' cross-sectional area, the air flow is much better balanced and the drivers side demister works better.


Interestin,you could just as easily remove the vent trim on top of the dash and modify (gaffer tape Whistle ) the hole,tbh, I hadn't noticed a difference but will look for it now,cheers!
Post #258147 12th Aug 2013 12:11pm
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pjb



Member Since: 08 Apr 2009
Location: Sunny Oxford
Posts: 1244

johnnyd wrote:
Hmmm not what i wanted to hear Big Cry No time no time..........

JD


hopefully Thumbs Up 2 months before you need it 2020 P300 HSE
Post #258153 12th Aug 2013 12:41pm
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LandRoverAnorak



Member Since: 17 Jul 2011
Location: Surrey
Posts: 11324

United Kingdom 
jimbob7 wrote:
Interestin,you could just as easily remove the vent trim on top of the dash and modify (gaffer tape Whistle ) the hole,tbh, I hadn't noticed a difference but will look for it now,cheers!

Yeah, I guess so. I first did this mod on a Series III many years ago, which comprised a metal disc on a shaft that I fitted in the bottom of the vent. It was then adjustable from the outside. In practice, a bit over-engineered, as once it was set at half way it was never necessary to move it again. Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia
Post #258156 12th Aug 2013 12:57pm
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