R_Lyle
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My '72 TR6 seems to be having a problem with overheating all of a sudden. I replaced the radiator and flushed the cooling system about six years ago and have not had any trouble with it till now. All of a sudden the car temperature gauge has been above the middle setting and heading for the red. I figured it was way past time to flush the system so I drained the block and the radiator and refilled with water. I ran the car only to find the problem got worse. So I removed the thermostat and filled with water again. Now the temperature stays slightly higher then the middle of the gauge and as soon as I close the heater valve it climbs to near the red. I flush the system several times and remove several hoses to flush some more. Still the temperature rises above the middle of the gauge. The only part that I can think that may be faulty is the water pump since I have never changed it in eight years of owning the car. Any advice would be great.