Okay I'm lost, 2004 Ford Freestar, 3.9, 107000 miles. Overheats when driven over 60mph, Thermostat has been changed twice, Radiator is new, lower radiator hose is new, electic fan relays have been checked and appear to be working, Fans both work, heads have been removed and there were no blown gaskets or noticible cracks, Exhaust gas test is negative, leak down test is negative, when overheating the radiator overflows so we know it is not the gage. Removing the thermost seens to help some. A can of block sealer did not help, The only possible related item is that I get AC but no heat. This seems to be a problem with the dash heat control valve, two mechanics have given up. I, m also a mechanic and I am out of ideas. Can you see something I have missed? Thanks
have the same problem?
Tuesday, July 10th, 2012 AT 7:13 PM