Have a 2001 VR6. Today it overheated, A/C was on, stopped immediately. When cool, put water in the radiator bowl thingy.. it was dry. Started the car, did not overheat.. but had A/C off and heater on. Drove about 15 miles - very carefully - max speed maybe 45 - all worked fine. When I was close to home, I kicked on the A/C, and the temp started climbing.. I think this is a fan issue - thermo-fan and I will start testing tomorrow. I thought it would be the thermostat, but now do not.. still may be, only opening a little, not all the way..
any other suggestions?
Thanks
Scott