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 inline thermostat 
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 Post subject: inline thermostat
PostPosted: Tue Mar 17, 2015 3:54 pm 
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hi to all

today I fitted a in line thermostat to my 75 diesel,started the engine and bleed the system,run the engine temp went up to 96 c and the cooling fan came on then I tried the heater and it was hot the switched the heater off and let the engine come up to temp until the fan came on,then I took the car for a spin down the road temp was between 76 c to 83 c tried the heater it was hot got back home parked the car ran the engine temp was 83 c turned the heater on to 28 c it was hot but the cooling fan came on and I don't know why can anyone tell me why this is

all the best david
:D


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 Post subject: Re: inline thermostat
PostPosted: Tue Mar 17, 2015 6:47 pm 
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Was the heating system in auto? If so the aircon will be on and so the fan runs anyway independant of engine temp.

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 Post subject: Re: inline thermostat
PostPosted: Tue Mar 17, 2015 7:12 pm 
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This might sound stupid,
But I have a zt with auto climate, get the heating where you want and press the off button to switch it on or off. (every day when you get in the car)
Rather than using the auto button which will automatically switch the ac on to demist.
Took me ages to realise this.


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 Post subject: Re: inline thermostat
PostPosted: Tue Mar 17, 2015 9:57 pm 
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mg-richard wrote:
This might sound stupid,
But I have a zt with auto climate, get the heating where you want and press the off button to switch it on or off. (every day when you get in the car)
Rather than using the auto button which will automatically switch the ac on to demist.
Took me ages to realise this.


Just press the eco button if you don't want the aircon to come on. No need to turn it off/on everytime. The Eco setting stays where you put it I think.

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 Post subject: Re: inline thermostat
PostPosted: Tue Mar 17, 2015 10:07 pm 
RT GOD


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Not if you press auto or demist to turn the heater on.
I find the auto climate control pretty annoying tbh


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 Post subject: Re: inline thermostat
PostPosted: Tue Mar 17, 2015 10:20 pm 
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hi to all
yes the auto was on set at 28 c but set auto on to hi and the fan go,s off, in econ the fan does not come on set econ to hi the fan does not come on turn defrost on the fan comes on, select manual the fan comes on but set manual to hi it go,s off, in the 3 years I have owned the car this is the hottest it has been
all the best david :D


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 Post subject: Re: inline thermostat
PostPosted: Tue Mar 17, 2015 10:37 pm 
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david2000 wrote:
hi to all
yes the auto was on set at 28 c but set auto on to hi and the fan go,s off, in econ the fan does not come on set econ to hi the fan does not come on turn defrost on the fan comes on, select manual the fan comes on but set manual to hi it go,s off, in the 3 years I have owned the car this is the hottest it has been
all the best david :D

Sounds like normal behaviour to me.

Demist button turns on the aircon (and therefore the fan) no matter whether econ is on or off
Hi turns the aircon off under all conditions (except demist).

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 Post subject: Re: inline thermostat
PostPosted: Wed Mar 18, 2015 8:04 pm 
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hi to all
yes the fan run continuously for more than 2 minute on demist
today I checked the water level and toped up then I started the car and bled the system no air came out I then connected the t4 and went to the engine overview from cold these were the readings
11.27 water temp cold 6.85 c
11.35 water temp 53.55 c
11.40 water temp 73.55 c
11.45 water temp 79.35 c
11.50 water temp 82.35 c in line thermostat opens
11.55 water temp 87.95 c
12.00 water temp 93.35 c
12.03 water temp 99.16 c fan comes on
while doing this test I tried the atc on auto and the fan did not come on
also the heater was hot


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 Post subject: Re: inline thermostat
PostPosted: Thu Mar 19, 2015 11:15 am 
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You can also set the mileage display to show the temp if you do not have T4. The 'how to' is on the 75&ZT forum.


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 Post subject: Re: inline thermostat
PostPosted: Thu Mar 19, 2015 10:29 pm 
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Yes and very useful it is too.

Press and hold trip metre until the display changes to a 1. (takes 5 secs or so).
Then release and press rapidly until the dash shows 19.
Wait and then display with cycle Lon-----Loff
When it displays Loff press the trip button once again
This will return you to the display saying 1. but this time press the button rapidly until it says 7.
Then wait for a second and the coolant temp will then be displayed (in °C)
It'll stay like this until you turn the ignition off (or you press the button to access different data display menus).

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