We just got the car yesterday and I've replaced the thermostat after I noticed that the car was overheating when I was driving at 70mph. My wife took the car on a trip and said that it still runs hot at 70mph. Oddly enough it cools down if you reduce the speed. The fans are working, coolant level is right, so am I looking at replacing the water pump or am I missing something?
Water pumps start leaking when they go bad but they don't stop pumping unless the belt gets thrown off. Sounds like you have a clogged radiator.
I would be more suspect of a clogged radiator than a bad water pump.
Steve B.
How many miles on the vehicle and how many miles since you last had the cooling system flushed and the coolant changed?
Matt
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