Four problems related to engine cooling system have been reported for the 1999 Mercury Sable. The most recently reported issues are listed below.
A burning odor was coming from the vents. Consumer noticed while turning on the heater this problem occurred more than once. Consumer took vehicle to dealer for inspection, and mechanic determined that the heater core needed to be replaced due to corrosion. . Read more...
Engine cooling system is faulty. I have had 3 freeze plugs replaced in engine over past year and a half at cost of $500. 00 I am told if the others rust behind the engine it will be another $500. 00 just had the system flushed last year, now it is rusty again. Cooling system is corrosive! does that make sense?.
No summary listed for above vehicle.
Problem first noticed as engine overheated and a coolant leak occurred. . . Debris in cooling system creates a blockage and heater works intermittently. Still overheats after radiator flushes to clean system. I have been advised by the mechanic to either sell the car or replace the entire cooling system.