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Car Forum / Land Rover Cars / May 2008

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Climate control/air con not  working

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Dom J - 06 May 2008 22:07 GMT
Just been out in the Disco (TD5 Y reg) and the air con aint cold at all.  I
can see the problem just need to know where to look to solve it.

When the engine is running the compressor outer turns ok (the bit with the
belt over the top of it it) but the inner bit stays still (you can turn
inner bit ny hand when engine is off)  I remember reading in one of the LR
mags that this inner bit is a magnetic clutch of sorts which pulls in when
the A/C is turned on thus turning the pump.

All fuses look ok so far, any obvious things to check??.

Dom
Pacman - 06 May 2008 22:17 GMT
> Just been out in the Disco (TD5 Y reg) and the air con aint cold at all.  I
> can see the problem just need to know where to look to solve it.
[quoted text clipped - 8 lines]
>
> Dom

Its probably the same problem I've got in my P38...there's a fix
whereby you remove the inner bit and there's a shim behind it which
you simply remove, then replace the inner bit....but I can't seem to
remove that bit as when I try to undo the nut, the whole thing just
turns..

Paul
Dave Liquorice - 06 May 2008 22:29 GMT
> All fuses look ok so far, any obvious things to check??.

It's not hot enough for the compressor to be required to chill the
incoming air?

Turn the temperature settings right down to LO and that will force the
compressor on and the air to be chilled.

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Cheers
Dave.

jg - 07 May 2008 00:44 GMT
>> All fuses look ok so far, any obvious things to check??.
>
[quoted text clipped - 3 lines]
> Turn the temperature settings right down to LO and that will force the
> compressor on and the air to be chilled.

That's right - the clutch will only pull in in response to the
thermostat which regularly makes/breaks even in hot weather. Worth
checking that first.
Pete M - 06 May 2008 23:46 GMT
> Just been out in the Disco (TD5 Y reg) and the air con aint cold at all.  I
> can see the problem just need to know where to look to solve it.
[quoted text clipped - 6 lines]
>
> All fuses look ok so far, any obvious things to check??.

Is there any gas in the system? That'd be my first port of call. There
are two pressure switches that if there's no gas, the compressor won't
kick in.

Kwik Fit, etc, do AC recharging now, but if you look for your local "man
in a van" type operation, they should be able to sort it for you.
Shouldn't be expensive if it's just gas as a 2001 Disco will use R134a
which is normally around £25-40 for a vac, dye and re-gas.

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Pete M - OMF#9
Range Rover V8 Turbo
Range Rover 4.6 HSE
"Professional Petrolhead"

EMB - 07 May 2008 06:53 GMT
>> Just been out in the Disco (TD5 Y reg) and the air con aint cold at
>> all.  I can see the problem just need to know where to look to solve it.
[quoted text clipped - 10 lines]
> are two pressure switches that if there's no gas, the compressor won't
> kick in.

I'll second that diagnosis.
Dave Liquorice - 07 May 2008 10:02 GMT
>> Is there any gas in the system? That'd be my first port of call.
>
> I'll second that diagnosis.

I'd still force the system into full cooling with the temperature controls
to check before calling a man out or taking it to an aircon place. It may
well be out of gas, mine is but to be honest last year there was only
about two or three days when it would have been nice to have it working.

Interesting that a vacuum, regas with dye should be less than £50. LR
Dealers charge £100... I'll have to check what they will provide for that
£100, confidence is high that the reason there is no gas in mine is 'cause
one of the pipes has a hole in it. I brought one of the cans to top up
your system with a pressure gauge, all was going well the pressure was
rising bits where getting cold then the pressure dropped and refused to
rise much any more and soon fell back and the pipe waork soon warmed back
up. Feeling round the pipes there was one *very* cold spot just near where
it goes through a retaining clip covered in corrosion... Now if the LR
dealer will get it working and replace the pipe for £100, that is a better
deal.

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Cheers
Dave.

EMB - 07 May 2008 10:25 GMT
> Interesting that a vacuum, regas with dye should be less than £50. LR
> Dealers charge £100... I'll have to check what they will provide for that
> £100

Any reputable business regassing the system will replace the
receiver/dryer when they do the job.  That may well account for the
price difference.
Dave Liquorice - 07 May 2008 14:07 GMT
>> Interesting that a vacuum, regas with dye should be less than £50. LR
>> Dealers charge £100... I'll have to check what they will provide for
[quoted text clipped - 3 lines]
> receiver/dryer when they do the job.  That may well account for the
> price difference.

Possibly but I'd be more inclined to believe Mr Brownlee's experience and
if it gets taken to a "reputable business" they'll do that anyway...
Having said that I only needed the aircon two or three days last year
today has been a little warm but OK with the window open...  B-)

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Cheers
Dave.

Austin Shackles - 08 May 2008 07:30 GMT
>>> Interesting that a vacuum, regas with dye should be less than £50. LR
>>> Dealers charge £100... I'll have to check what they will provide for
[quoted text clipped - 8 lines]
>Having said that I only needed the aircon two or three days last year
>today has been a little warm but OK with the window open...  B-)

That's my take.  If I lived somewhere with a really warm climate, I'd
probably fit it, especially to work vehicles.  in this country, I'd only use
it about 4 times a year.
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Austin Shackles.  www.ddol-las.net  my opinions are just that
Travel The Galaxy!  Meet Fascinating Life Forms...
------------------------------------------------\  
  >>  http://www.schlockmercenary.com/  <<      \  ...and Kill them.
a webcartoon by Howard Tayler; I like it, maybe you will too!

Pete M - 08 May 2008 15:54 GMT
>>>> Interesting that a vacuum, regas with dye should be less than £50. LR
>>>> Dealers charge £100... I'll have to check what they will provide for
[quoted text clipped - 10 lines]
> probably fit it, especially to work vehicles.  in this country, I'd only use
> it about 4 times a year.

I've just driven a Toyota MR2 120 miles with the roof down. I now
resemble a Frazzle. Aircon is gods own gift and should be used whenever
the temperature gets above 21.5°C.

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Pete M - OMF#9
Range Rover V8 Turbo
Range Rover 4.6 HSE
"Professional Petrolhead"

Ian Rawlings - 08 May 2008 16:05 GMT
> I've just driven a Toyota MR2 120 miles with the roof down. I now
> resemble a Frazzle. Aircon is gods own gift and should be used whenever
> the temperature gets above 21.5°C.

It's also particularly useful when getting into the vehicle on a sunny
day when it's hot enough to melt rock inside, the "climate control" in
my old audi just whacks on the cold air until the earth cools and life
can begin to exist on the surface.

I've just come back from an off-roading holiday in Wales and could
have done with air con in the pinz, sitting on top of the engine in a
truck that's spent all day in low range can be hot sometimes!

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Blast off and strike the evil Bydo empire!
http://youtube.com/user/tarcus69
http://www.flickr.com/photos/tarcus/sets/

Lee_D - 08 May 2008 20:14 GMT
>> I've just driven a Toyota MR2 120 miles with the roof down. I now
>> resemble a Frazzle. Aircon is gods own gift and should be used whenever
[quoted text clipped - 8 lines]
> have done with air con in the pinz, sitting on top of the engine in a
> truck that's spent all day in low range can be hot sometimes!

That I don't miss!

Looking forward to a 60mph trip in a air con chilled mobile sofa tugging the
caravan :-)

Lee D
Nige - 09 May 2008 13:13 GMT
> That I don't miss!
>
> Looking forward to a 60mph trip in a air con chilled mobile sofa
> tugging the caravan :-)

Me too mate.
Ian Rawlings - 09 May 2008 13:26 GMT
> Looking forward to a 60mph trip in a air con chilled mobile sofa tugging the
> caravan :-)

You big softie! (says the IT consultant to the policeman)

It took me 4 hours to get to Wales at about 45MPH in the pinz on a
seat covered in something akin to a camping mat, then at the end I
slept in the back of it for three nights, on a camping mat..  My arse
now has a square bit which makes leaning forwards hard.

Why the hell do sheep just bleat?  At 4:30AM I was tempted to go out
there and give them something to bloody well bleat about!

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Blast off and strike the evil Bydo empire!
http://youtube.com/user/tarcus69
http://www.flickr.com/photos/tarcus/sets/

John Williamson - 09 May 2008 19:45 GMT
> Why the hell do sheep just bleat?  At 4:30AM I was tempted to go out
> there and give them something to bloody well bleat about!

To remind them which end to eat with?

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Tciao for Now!

John.

Austin Shackles - 09 May 2008 07:37 GMT
>> I've just driven a Toyota MR2 120 miles with the roof down. I now
>> resemble a Frazzle. Aircon is gods own gift and should be used whenever
[quoted text clipped - 8 lines]
>have done with air con in the pinz, sitting on top of the engine in a
>truck that's spent all day in low range can be hot sometimes!

yer didn't say.  which bit?
Signature

Austin Shackles.  www.ddol-las.net  my opinions are just that
Travel The Galaxy!  Meet Fascinating Life Forms...
------------------------------------------------\  
  >>  http://www.schlockmercenary.com/  <<      \  ...and Kill them.
a webcartoon by Howard Tayler; I like it, maybe you will too!

Ian Rawlings - 09 May 2008 09:03 GMT
>>I've just come back from an off-roading holiday in Wales and could
>>have done with air con in the pinz, sitting on top of the engine in a
>>truck that's spent all day in low range can be hot sometimes!
>
> yer didn't say.  which bit?

Rhayader area, some pics on my flickr page below, and also some videos
will be going into the lane video database (no I've not forgotten
about that, a new update soon-ish) adding about 6 hours of video of
the lanes we did will be available soon.  We'll also be going on
another trip to North Wales, Oswestry area I think, later in the year
(if all goes to plan).

The trip was a FoDRoW do (my local lot), however as it turns out,
about three quarters of the people on it weren't from Dorset at all,
but we'd insisted they join the Dorset RoW group as the trip entry
fee, so most of the people on it turned out to be from Sussex or
London-ish area.

The chap organising it (Julian Martin) did an excellent job, we had
three groups of four trucks separated by about 15-30 minutes, with
each group leader using a pre-prepared route that Julian had spent
many hours preparing in Memory Map.  He'd contacted various land
owners and got permission to travel across some land that normally
access wasn't available for, and found a few byways that were labelled
as bridleways.  If the later trip goes as well then it'll be great,
I've done some of those lanes and they were very good but I reckon the
weekend just gone was better.

If you fancy a 4-day camping and off-roading holiday (2 days
off-roading) in Oswestry area then I'll see what can be arranged, this
one was an invites only job due to trying to keep numbers down,
although I suppose that if numbers got too bad then we could split the
groups out over two weekends.

Signature

Blast off and strike the evil Bydo empire!
http://youtube.com/user/tarcus69
http://www.flickr.com/photos/tarcus/sets/

Neil Brownlee - 07 May 2008 10:47 GMT
Our LR dealer charges you more than that...and then drops it off at the
local A/C place!!! I cirumvented that little rip off when I spotted them -
only £60 from the actual source :rolleyes:

Signature

Neil

Neil Brownlee - 07 May 2008 10:03 GMT
I'll third it :) No gas = no operation. Had that on the D1 and my previous
L322.

Signature

Neil

Matt M - 07 May 2008 20:00 GMT
> I'll third it :) No gas = no operation. Had that on the D1 and my previous
> L322.

Me too, but instead of just getting a re-gassed I'd ask them to check
for leaks first - no point filling it up if the damn thing just pisses
it all out again.  You can have a small enough leak so that once the gas
is re-charged, it will work for a while, and seems 'fixed', but later on
it stops again.  Had that on my Disco, despite asking them to check for
leaks before charging - I only found out about 1 month later that they
hadn't bothered after it stopped working again!  They then diagnosed a
leak, I wasn't a happy bunny.

Matt
Pete M - 07 May 2008 20:59 GMT
>> I'll third it :) No gas = no operation. Had that on the D1 and my
>> previous L322.
[quoted text clipped - 7 lines]
> hadn't bothered after it stopped working again!  They then diagnosed a
> leak, I wasn't a happy bunny.

That's why I said "Vac, *dye* and regas".

The dye's not in there just to make it pretty, y'know... :-p
Signature

Pete M - OMF#9
Range Rover V8 Turbo
Range Rover 4.6 HSE
"Professional Petrolhead"

Matt M - 08 May 2008 15:00 GMT
> That's why I said "Vac, *dye* and regas".
>
> The dye's not in there just to make it pretty, y'know... :-p

Ah, I'm not up on all these fancy technical terms! :-)

Matt
Neil Brownlee - 08 May 2008 09:18 GMT
The place I go to charge £20 for a full system check, *IF* it needs
re-gassing or repairing they will tell you, and the £20 is refunded when you
go for the work. Seems ideal to me :)

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Neil

Lee_D - 08 May 2008 14:03 GMT
> The place I go to charge £20 for a full system check, *IF* it needs
> re-gassing or repairing they will tell you, and the £20 is refunded when
> you
> go for the work. Seems ideal to me :)

COOL!
;-)
Pete M - 08 May 2008 15:49 GMT
> Just been out in the Disco (TD5 Y reg) and the air con aint cold at all.  I
> can see the problem just need to know where to look to solve it.
[quoted text clipped - 6 lines]
>
> All fuses look ok so far, any obvious things to check??.

One more thing to check, if it has an outside temperature gauge, is it
reading accurately? My P38 sometimes displays 0°C and the little
snowflake symbol on the HVAC unit - if the car thinks it's freezing out
it won't switch on the AC. Switching the ignition on and off a couple of
times normally brings it back to life - ice cold, refreshing, lovely
chilled life...

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Pete M - OMF#9
Range Rover V8 Turbo
Range Rover 4.6 HSE
"Professional Petrolhead"

Dom J - 08 May 2008 17:25 GMT
Hokay i have just:

Rechecked all fuses, all ok and not blown.
Turned Climate control on and set it to 'LO', checked whirly pulley thing on
A/C pump and it still not going round.

Temp outside is round about 23C at the mo, in the car its 28C, so i'm
guessing the A/C SHOULD kick in.  I've seen mention of a thermostat (post by
jg).  Where is this mounted?.  There is a small grill by the head light
level switch in the car which is called 'cabin temp sensor' in Haynes book.

As for the possibility of having no gas.  I took the  'L' plastic cap off
and there was a definate hiss and an odd smell.  Could this valve be
leaking??.  I've found a friendly air con man, will pop in and see him
tomorrow.

Dom
Dougal - 08 May 2008 18:01 GMT
> Hokay i have just:
>
[quoted text clipped - 13 lines]
>
> Dom

Check the continuity of the coil for the clutch (integral with the
compessor pulley) and that it's receiving 'juice'.
Dom J - 08 May 2008 19:14 GMT
"Dougal" <Dougal@hiskennel.free-online.co.uk> wrote in message
news:WoudnfaJSJ9-rL7VnZ2dnUVZ8h->
> Check the continuity of the coil for the clutch (integral with the
> compessor pulley) and that it's receiving 'juice'.

Now why didn't i think of that........

Just checked and theres bugger all power to the clutch.  So its time for a
service/regas me thinks!.  Cheers for all your help chaps!!.

Dom
Nige - 09 May 2008 11:45 GMT
>> Just been out in the Disco (TD5 Y reg) and the air con aint cold at
>> all.  I can see the problem just need to know where to look to solve
[quoted text clipped - 15 lines]
> couple of times normally brings it back to life - ice cold,
> refreshing, lovely chilled life...

Either the sensor or the ecu.

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