Chris NottVolks Autos
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  1. #1
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    Still have Water Temp Problem(After Changing Stat)

    Refering to my previous thread about Water Temp being between 60c-70c I decided to Change the Stat as advised..

    I Changed the Stat Today and everything went ok as planned I bled the System as per Audi instructions..

    Ran the Engine for about 5-10 mins and this time the Temp Gauge as never moved off 60c not a bit..

    I felt around the pipes again and the Rad was cold and most of the pipes were too apart from both Heater pipes which were warm not hot...

    I'm thinking now I have put the stat in wrong(how can you) or it's something else like the CTS But if it's now that how come I'm getting no reading on the Gauge(60c)or can it be Air in the system...??
    Last edited by THE MONSTER; 23rd February 2010 at 18:44.

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  3. #2
    "Stick a V8 in it!"

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    10mins at idle might not be enough to actually get the coolant properly up to temperature

    The heater acts as a bypass circuit as the engine warms up, so you'd expect those to warm up first, and the fact they are would suggest there is no airlock. You can always wiggle the heater hose off a little bit and see if it bleeds out any more air.

    Drive the car round the block, 1 or two miles and see if the gauge moves, if it does drive another few miles and see if you can get it up to 90c

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  4. #3
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    Quote Originally Posted by aragorn View Post
    10mins at idle might not be enough to actually get the coolant properly up to temperature

    The heater acts as a bypass circuit as the engine warms up, so you'd expect those to warm up first, and the fact they are would suggest there is no airlock. You can always wiggle the heater hose off a little bit and see if it bleeds out any more air.

    Drive the car round the block, 1 or two miles and see if the gauge moves, if it does drive another few miles and see if you can get it up to 90c
    Will do Mate Thanks...I will try it keep you posted...

  5. #4
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    took mine a good while to get up to temp when i changed my thermostat, heaters were blowing cold for a good 15min and temp gauge was still stuck at 60degrees, next min i looked its was on 90 and blowing hot air, not sure why it did that but mine took a while to get through the system

  6. #5
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    Quote Originally Posted by THE MONSTER View Post
    Will do Mate Thanks...I will try it keep you posted...
    Well I pulled the Hose Back as far as the hole while it was running and it let some Coolant out but I also kept pinching the pipes further down and that shot some water out..

    Temp kept increasing so I thought great the Stat is not dead..Topped up water quite a bit too

    Temp still climing right up to About 87c just shy of dead on 90c(I think the Stats are set at between 87-90 odd) and also the oil Temp is now on about 85 which is a lot more than it was..

    I got underneath to check for leaks around the Stat(was ok)and also I replaced that bottom Hose Spring Wire was a game because it was rusted in(check also for leaks was ok)..

    The O-Ring on that Bottom Rad Hose is Built in the Flange when you connect it so no need for a O-Ring..

    The Strange thing is though the Bottom Hose that goes from the Thermostat to the Bottom push on Hose is stone cold still also the fins on the Rad(should they be)..

    Did Not go for a drive the weather is Snowing so I gave that a miss...

    I was going to kick the old Stat as far as I could up the garden but thought better of it thinking it could have been worse and been the CTS after Changing the Stat....
    Last edited by THE MONSTER; 23rd February 2010 at 19:52.

  7. #6
    "Stick a V8 in it!"

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    sounds like it simply still hasnt run for long enough.

    The thermal output at idle is tiny, and you'll really need to drive it to get some proper heat into it

    The rad will only heat up once the thermostat opens.

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
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  8. #7
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    Quote Originally Posted by aragorn View Post
    sounds like it simply still hasnt run for long enough.

    The thermal output at idle is tiny, and you'll really need to drive it to get some proper heat into it

    The rad will only heat up once the thermostat opens.

    Thanks for all your Advice aragorn over this Thread you have been very helpful as usual.....
    Last edited by THE MONSTER; 23rd February 2010 at 20:59.

 

 

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