Hi all, Recently i experienced an overheat which was diagnosed as a faulty coolant temeperature switch, unfortunately the garage who undertook the work failed to test the engine properly and 10 miles after picking the car up guess what.....overheat again ! got AA this time and diagnosed sticking thermostat, so new thermostat, coolant, later all good or not as it seems ? when i ran engine to test all worked ok engine got up to temeperature, eventually and at @ 95 centigrade, fan kicked in, so all working, took the car out and as soon as i hit the gas and took it over 3000rpm 60mph temp gauge dropped off to zero, dropped the revs to 2000rpm 50mph ish, temp slowly climed back up, got AA again as didnt want to risk damage, hooked up live data and was working ok ? so off i went and again over 60mph temp gauge back to zero cold........any ideas, TIA
POSSUMSRI