koorzen
Member Since: 15 Sep 2007
Location: Tarnow
Posts: 2
  
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wings wrote:...and two thirds of the windscreen had cleared
Do you have interior heating??
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 19th Dec 2007 12:18 pm |
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wiggs
Member Since: 03 Sep 2006
Location: Manchester
Posts: 14372
  
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I do ...but if you mean does it come on with this modification then no.
Webasto can not even get this to work , as the car goes to sleep.
However after 20mins or so the temp guage is up to half way when i get in and start the car , so i just put on the heaters and instant heat.
Welcome to the site by the way. G4 Gone ...but not forgotten
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| 19th Dec 2007 12:22 pm |
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koorzen
Member Since: 15 Sep 2007
Location: Tarnow
Posts: 2
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Hallo again!
Thanks for respons and sorry i have forget to say hallo to everybody. regards
Lukas
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| 19th Dec 2007 12:28 pm |
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TazDaz
Member Since: 07 May 2007
Location: South East Essex
Posts: 2858
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I beleive TFC has used the spare output on the GSM to connect & switch the windscreen heater too
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| 19th Dec 2007 12:30 pm |
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wiggs
Member Since: 03 Sep 2006
Location: Manchester
Posts: 14372
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Yes i belive so (although he is using a different gsm unit than mine )..however for me this was not an option , as i dont have a second battery and the heated front screen uses a fair few amps to work it .
Also i have found that the heat from the fuel burning heater is defrosting the window anyway , so its not an issue for me .  G4 Gone ...but not forgotten
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| 19th Dec 2007 12:44 pm |
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stapldm
Member Since: 11 Sep 2006
Location: Swine Town
Posts: 2330
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wiggs wrote:However after 20mins or so the temp guage is up to half way when i get in and start the car
Wiggs, do you mean halfway to normal operating temp (25% of scale), or halfway as in equal to normal operating temp(50% of scale)?
Mine only makes it to 25% of full scale after 30 minutes running time... Dr. Ian Malcolm:
"Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should."
Transgenic tomato anyone?
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| 19th Dec 2007 12:48 pm |
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wiggs
Member Since: 03 Sep 2006
Location: Manchester
Posts: 14372
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More than a quarter and very fractionaly under half ...more relistically i would say a third..
However when you first start the car it drops slightly as the water is then circulated round by the water pump.
But i have found that there is still heat there (admiditedly its not roasting hot) , when i start the car and put the heaters on.Much better than cold air  G4 Gone ...but not forgotten
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| 19th Dec 2007 1:05 pm |
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stapldm
Member Since: 11 Sep 2006
Location: Swine Town
Posts: 2330
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Thanks Wiggs - was worried there that my FBH was only running at half power
Yes, that initial drop of the needle when the engine starts is odd - I thought the FBH pump would circulate and get everything to one temperature, so does it not circulate through the radiator? I know that it'd be daft to lose all that heat through the radiator, but I can't see how it could avoid it. I'd be horrified if the drop was purely because the radiator fan started turning.
Got to admit though, that immediate start (no glow plug light) and immediate warm air is gorgeous. Just wish I could always remember to fire it up when it's frosty  Dr. Ian Malcolm:
"Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should."
Transgenic tomato anyone?
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| 19th Dec 2007 11:18 pm |
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Slimer
Site Moderator
Member Since: 06 Jan 2005
Location: Last Exit to Nowhere
Posts: 16295
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stapldm wrote:so does it not circulate through the radiator? I know that it'd be daft to lose all that heat through the radiator, but I can't see how it could avoid it.
I suspect that LR haven't abandoned thermostats yet 
Coolant doesn't normally flow through the radiator on any vehicle until it's hot enough to need cooling The End
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| 19th Dec 2007 11:21 pm |
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stapldm
Member Since: 11 Sep 2006
Location: Swine Town
Posts: 2330
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Doh! I assumed that'd be buried in the engine block and therefore not relevant. Time for a kip methinks! Dr. Ian Malcolm:
"Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should."
Transgenic tomato anyone?
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| 19th Dec 2007 11:27 pm |
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Slimer
Site Moderator
Member Since: 06 Jan 2005
Location: Last Exit to Nowhere
Posts: 16295
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 The End
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| 19th Dec 2007 11:29 pm |
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10forcash
Member Since: 09 Jun 2005
Location: Ubique
Posts: 16534
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Given the diffence in size between the FFBH circulation pump and the engine mounted one, there's going to be a fair bit of stratification within the coolant jacket, hence the drop in temperature once the engine is started
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| 19th Dec 2007 11:31 pm |
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stapldm
Member Since: 11 Sep 2006
Location: Swine Town
Posts: 2330
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Off Topic - Hi TFC, yes that makes sense, just like a knackered pump in a central heating system only heating the tops of the rads.
Whilst you're online, perhaps I could ask for some of that famous TFC knowledge?
You know the cabin aircon/ventilation fan behind the glovebox - I believe it's PWM speed controlled but do you know if that's via an external PWM relay or built into the climate control module? I can't imagine why I'd be asking that  but if it's an external relay do you know which one? Dr. Ian Malcolm:
"Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should."
Transgenic tomato anyone?
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| 19th Dec 2007 11:38 pm |
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10forcash
Member Since: 09 Jun 2005
Location: Ubique
Posts: 16534
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Unfortunately it's via the ATCU - not that it'd be any use as all the flaps close on power down anyway
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| 19th Dec 2007 11:41 pm |
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stapldm
Member Since: 11 Sep 2006
Location: Swine Town
Posts: 2330
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Thanks TFC, appreciate it. So, for the shopping list I need a 12V PWM motor speed controller and a chunky stick on a long throw solenoid to jam the flaps open at power-down 
Do you happen to know what the configuration of hot/cold/recirc/outlet it will all default to when all the flaps close at power down? Any chance the hot/cold mixer flap stops in the hot position and saves me some time? And would it make any difference if the flaps were manually set towards the windscreen rather than being in full Auto before shutting down?
If all that is for nought, do you know if the flaps are controlled by real servo units (PWM position controlled) or simple 12v motor with variable resistor providing simple position feedback to the ATCU.
Oh hell, there I go again, you answer the one question and I come up with ten more Dr. Ian Malcolm:
"Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should."
Transgenic tomato anyone?
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| 20th Dec 2007 8:47 pm |
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