Hi Bought myself a 2000 plate a3 1.8t. Coming from celicas fancied a change. Got a few problems that I take is quite common. Temp gauge doesn't like to play ball. Sometimes doesn't move other times goes to 90. Had the sensor replaced this morning and now it half works until I put the heating on and then it goes right back to the lowest setting. Got hot air out of the heaters, should this be effecting the temp gauge? Other thing the led screen is missing a few pixels. Well lots. Can sort of make it out. This an expensive fix? Great car other than that. So much quicker than my last car. Few little things like wishbones need sorting and brake discs and pads all round. Think it's had a stage 1 remap done to. Any ideas on what sort out figures that gives? Thanks in advance.