When I'm just cruising around the city for daily business etc, my temperature is fine. Needle sits dead centre or slightly over.
However, when I'm travelling at speed (highways etc) or going uphill, my needle soars to maximum, and only goes down when I put my heater on or if i slow back down to a lower speed and drive gently for a while.
What could be the cause of this and what're the likely costs associated with rectifying this problem? With summer approaching, I'd like to have my cooling well under control!
In advance, cheers guys
