v6 Mustang runs hot
About 7 years ago, the fan switch went bad and my wife ran the engine very hot. She took it to her uncle's shop and he said that a head gasket was blown. He said that he fixed it but it continued to run slightly hotter than normal. A few months ago, I had to change the radiator because it was cracked bellow the filler neck. It ran fine for about a week before it ran hot again. The temp. gauge would flucuate from cold to hot and the heater would blow cool and hot air in 96 degree weather! Now when I start the car in the morning, it misses until it warms up. There is no oil in the water, but I think the head gasket is blown. Maybe that one cylinder is filled up with water causing it to miss. Also I removed the thermostat to see what happens and no improvement. I have backflushed the heater core thinking it may have blocked, but it flow freely. Today I went to check the water in the radiator after 5 hours from driving it and there was pressure behind the cap. It shot out some water that was cool. Where did the pressure come from? Defective cap? Need help bad.