1991 Toyota Cressida temperature gauge hits hot after 20 minutes of driving?
The radiator is filled with coolant and the reserve is filled with the correct mix of antifreeze/coolant also. There are no leaks - it is parked in the garage where I can keep track of leaks. It runs fine for about 20 minutes then the temperature gauge moves up to the hot mark and I pull over to let it cool down and check under car for leaks - check radiator, reserve tank and fuel pump - no leaks. Does this mean a new thermostat? If so, what is the approximate cost and labor time. Thank you.
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