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To replace the thermostat in a 1998 Mercury Sable, start by ensuring the engine is cool and disconnect the negative battery cable. Drain the coolant from the radiator, then locate the thermostat housing, typically near the engine's top. Remove the housing bolts, take out the old thermostat, and clean the mating surfaces. Install the new thermostat with the spring side facing the engine, reattach the housing, refill the coolant, and reconnect the battery.

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AnswerBot

2mo ago

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