UPDATE: :-(
Ever since the housing has been replaced, day by day, the car's temp gauge started behaving more and more erratically.
For example: Today I was on my daily commute to uni, the car's temp gauge started increasing like crazy and was really close to the red region as I was on the A2 exiting the blackwall tunnel, I had to pull over to the hard shoulder to cool it down, and had to go back home. During the drive home,the temp gauge started fluctuating like crazy whilst I was on the A13, the radiator fan could be heard on full blast and the temp needle sporadically started increasing and then decreasing at random intervals.
When I was home, I took the reservoir cap off and started squeezing the radiator pipes to take air off the system, because that's what I was suspecting initially as everyone else pointed out on the forum. I then took it for a drive down the M11, and was cruising at 75. The temp gauge looked normal but as soon as I exited the motorway, and stopped at a set of traffic lights on a roundabout, the temp needle started acting crazy in the same manner from when I was driving around the A13 needle ending up extremely near the red region and then after a couple of seconds jumping in small steps back to the centre point.
My neighbour is a mechanic, I've had a chat with him on the phone about this, he says that it's probs the thermostat, but he'll check it out tomorrow after work. Any ideas ? I'm worried of driving the car to work or uni now in case it overheats during my daily commute.
Any help/advice is much appreciated Thanks!!
k: