1.9 tdi coolant temp in cold weather - should it go up and down?
I picked up a 130 tdi yesterday, on the 120 mile trip home the coolant was sitting at about 85deg all the way home, with a temp of only 1deg or so out side and the inside temp set to 23deg, when I slowed down a bit the temp went up and nearly got to 90, then when sat at traffic lights the temp goes down again, once your moving and using throttle it goes back up...I first thought it could be the stat, but been out to Sheffield and back today in the wife's exeo, and that's only 5months old and 10k miles on it (b6 is a 05 plate and 95k with cam belt and water pump done 15k ago) and that seems to be doing the same so should I be looking to change the stat on my b6 or is it just that the interior heater is too efficent and is robbing all the engine heat? (I turned the heater to hi when sat in the wife's and managed to drag theatre temp down from 90 to about 80 in a few mins with a outside temp of 1deg)
if this is normal that's fine... If not ill change the stat in mine to see if it fixes it..
Re: 1.9 tdi coolant temp in cold weather - should it go up and down?
Just read how piss easy it is to change the stat. Like changing the air filter out.....Just a bit messy cos of the water.