Hi, I have a 2001 Bora V5 with the 170bhp engine. It has now done 131,000 miles and going well, by and large. However, it has started having problems that only seem to appear in specific circumstances. Normally, she runs at 90degrees, regardless of what we're doing or how loaded the car is. When towing our caravan, she will be fine towing at 60. But when sitting in a traffic jam on a motorway she gets overheated after about 10 minutes, when the temperature starts to creep up. It continues to rise until we are moving again; once we reach about 30mph, the temperature starts to fall. Given the state of our motorways, this is not a comfortable experience. I have had it checked by a variety of garages, including an independent VW Audi specialist and they have all said that they cannot replicate the fault and all seems to work fine. It seems that it is an airflow problem and it is as though the fan cuts out when it has a lot of work to do. Any ideas anyone?