hello everybody i have a 1.9 tdi 2000 plate,problem is i have had the car for about 2 months been running fine round town,decided to take it to yarmouth for a week which is about 120 miles from home,got about 20 miles from yarmouth and the temprature gauge started creeping to 3/4 and down to half again then up to 3/4 it done this for about five miles pulled into a service station as it went to red and computer said stop,let it cool down took cap of topped up lots of steam,got to yarmouth no problems drove round all week no problems til coming back got about 10 miles from home and same again temprature started gong up and down,any ideas anyone i would appreciate any advice what i dont understand is it can go for 90 miles with no problems help