I've just bought a 2006 Ford Focus 1.8 Diesel.


I've just noticed in the last few days the thermostat on the dash board moves slightly when i go round sharp corners.


Basically the thermostat sits usually at just below the half way mark.  When i go round sharp corners, it decreases slightly towards the quarter mark.


Then as i drive on and straighten car, it starts to move up again to just below half way mark.


Anyhow seen this before?


Thanks for any advice