SOURCE: 2002 mercury sable heater wont get hot
you have a broken or stuck temp blend door in the heater case. or the servo motor is broken. this sits on top of the heater case
SOURCE: 1999 Mercury Sable cooling system
does it blow out white smoke? If so it might be a head gasket issue. I know mercury sables were infamous for head gaskets.
SOURCE: 2000 MERCURY SABLE
My 2000 Sable starts blowing hot air about every 6 months. I mean like an oven. All I do is disconnect the battery negative terminal for about 5 minutes. After I re-connect the problem is solved. This solves many problems on this car, it just needs a re-boot. It must be powered by Microsoft (ha ha). Good luck. ps my auto headlamps never did work right either. Dave.
SOURCE: can you bleed the water cooling system on 1999 mercury cougar
This is extremely important on some cars, for instance my BMW. 1. Have the car parked in a slight uphill slope. Make sure there is enough coolant in the expansion jar.
2. Start the engine and wait for the thermostat to open (upper radiator hose becomes warm).
3. Open up the radiator bleeding nipples slightly with a large screwdriver (bleeding nipples normally made of plastic with a '+* for a screwdriver to fit, at the highest points in the cooling circuit).
4. Allow air bubbles to fizzle out until you get a steady stream of coolant leaking out, use rags to capture leaking coolant.
5. Then close the bleeding nipples, switch off the engine and wait a few minutes for pressure to come down.
6. Open up the cap on the expansion vessel carefully and fill just below the "hot" marking.
7. Check levels again after a few miles and refill further if needed.
Done.
SOURCE: replacing water pump on 1995 mercury sable
water pump seems to be working but not pumping could it be a blockage?
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