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No heating / coolant
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Thks buddy , I’ll have a look in the week in the daylight , just bugging me

Yeh i know , need to get out more Laughing
   
Post #21843964th Nov 2020 12:21 am
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cmb2020
 


Member Since: 08 Sep 2020
Location: Buckley, North Wales
Posts: 1150

United Kingdom 2005 Discovery 3 TDV6 SE Manual Aintree GreenDiscovery 3

Hi sorry to be a pain, it’s blagging my bead this bleeding coolant bleed lark.

The steps I understand but they conflict with a few things and send me off..

So I get the car up to standard running temperature (50% on dash)

Leave it running with heating on full hot.

Open both the reservoir and cylinder head coolant bleed screws. Using cloths and gloves. Put hose in to a bowl as to save a repeat of ruining the idler pulley.

Fill the coolant reservoir to top line.

Tighten tank and hose bleed screws hand tight.

Fill coolant again to top line.

Remove cloths and bowl etc.

Leave to cool down fully

Start up with no fans or heating on

and Rev 3k for 1 minute, leave sat running for 5 minutes. Rev 3k for a minute.

Wait till thermostat opens???? How do I know when this is open?

Open reservoir cap to release pressure. Then top up to line again.

Done.

Is this correct?

......

I tried doing this but with tank bleed tight as to stop bubbles. Maybe I’m mixed up and it is part of the bleed?

TIA
  
Post #21844694th Nov 2020 4:35 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10336

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

you know when a thermostat is open, as both large radiator hoses will be hot.

If only one is hot, it hasn't opened yet
  
Post #21844754th Nov 2020 5:26 pm
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Globetrotter448
 


Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1771

Australia 2007 Discovery 3 4.0 V6 Petrol SE Auto Java BlackDiscovery 3

If you have bubbles, you have air
  
Post #21845365th Nov 2020 5:58 am
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Also can u see the water returning to the expansion tank
   
Post #21845935th Nov 2020 11:20 am
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8044

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

Hiya

Seeing that it’s bugging me now ref bleed screw as I’m convinced I saw another one up by the bulkhead

Will see if I can find it to confirm it 100% and if so will take a pic

Edit , just looked and can’t bloody find it now Big Cry[/quote]

I think you are mistaking the Shrader fuel bleed valve for a coolant bleed valve
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #21846125th Nov 2020 12:17 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Hiya

No it wasn’t that , was back in the summer time , I saw it was towards the back of the engine/ bulkhead can’t find it now , indeed pretty sure it was when I done the egr blanking so had both battery trays / panels etc removed

Fingers crossed I may be able to find it again Whistle

Ps, hope this finds u well Thumbs Up
   
Post #21846165th Nov 2020 12:32 pm
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Globetrotter448
 


Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1771

Australia 2007 Discovery 3 4.0 V6 Petrol SE Auto Java BlackDiscovery 3

Now if you move the "Zimmer" frame and put the glasses on.... Embarassed
  
Post #21847915th Nov 2020 9:11 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

How very dare u in me putting my glasses on Rolling with laughter
   
Post #21848205th Nov 2020 9:56 pm
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cmb2020
 


Member Since: 08 Sep 2020
Location: Buckley, North Wales
Posts: 1150

United Kingdom 2005 Discovery 3 TDV6 SE Manual Aintree GreenDiscovery 3

Just updating on this

I still seem to have weak heating. And have bled it several times.

I notice the heating gauge doesn’t seem to hit 50%. It’s always at about 47%. And it takes a while to heat up and quickly cools down.

Could it be that these cars don’t blow very hot even on full?

Or maybe the coolant hasn’t been diluted enough and is over cooling maybe?

Bugging me 😅
  
Post #218971626th Nov 2020 4:09 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10336

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

these cars are capable of being very toasty

if you have blanked the EGR's the gauge may not get to half way.

blocked heater matrix are an issue on these.
you could flush or replace.
After a run compare the heater pipe (rear of engine bay, drivers side) with the other coolant hoses.
If they are cooler, you could have a blocked matrix or airlock still!

You may want to check your FBH works. Should cut in if you start the car when the dash reads 4°C or less.
Tonight it a good night to test. If it works, you will get a funny smell from the front left wheel arch

Is the problem on both drivers and passengers footwell vents ? or just one ?
Set both sides to Hi

Too much antifreeze reduces cooling efficiency, so it won't be that.
  
Post #218975126th Nov 2020 6:25 pm
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snowmonkey
 


Member Since: 28 Jan 2012
Location: right of the middle
Posts: 195

United Kingdom 2012 Discovery 4 3.0 TDV6 HSE Auto Orkney GreyDiscovery 4

+1 on trying the FBH.

ISTR the FBH has a diverter valve, which might be stuck?
  
Post #218978726th Nov 2020 8:41 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10336

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

I don't think the FBH is your issue, but if that's not working either you will be in worse problems in winter!
  
Post #218991727th Nov 2020 11:33 am
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cmb2020
 


Member Since: 08 Sep 2020
Location: Buckley, North Wales
Posts: 1150

United Kingdom 2005 Discovery 3 TDV6 SE Manual Aintree GreenDiscovery 3

Hi all

Sorry for the late update

Here’s a video of the problem:


Left side there’s no heat at all. Right side is warm/hot

Engine bay back pipe (if I felt the correct one) is very hot. Front ones are hot but touchable.

See video as I may be touching the wrong ones

FBH does not kick in. Coincidentally found out today that there is an instant heater! I’d love to know how to get this working!!!

Can anyone advise what’s best to get this problem solved. Is it coolant flush? Or?

Tia
  
Post #21913394th Dec 2020 10:01 am
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kajtzu
 


Member Since: 10 Aug 2017
Location: Helsinki
Posts: 6538

Finland 2005 Discovery 3 4.4 V8 HSE Auto Cairns BlueDiscovery 3

Blocked heater matrix is my semi-educated guess.
  
Post #21913414th Dec 2020 10:04 am
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