Hi I'm new so please be gentle
I've had my 54 plate 1.9 TDI PD just a year now, I love it It's done 180k and in August had a service / MOT which included sorting out sticking back brakes and replacing cambelt at my request. In the last few weeks the temp gauge has started going up from its normal 90 'in the middle' point. I can do 30 - 40 miles from cold, before it starts going up, then after that it seems to go up into the red on uphill inclines, dropping back down to 90 on downhills, as long as I stick to about 50mph.
I'm guessing head gasket, but is there any other common cause for this, before I commmit to shelling out for the HG? When it's really hot in the red I sometimes stop and rest the engine, then it can be a bit 'coughy' on start-up.
ANy help much appreciated