Do the upstream hose cause heat problems in 2000 mercury sable

SOURCE: no heat/99 mercury sable

its not a fuse if the blower motor works , you have a clogged or bad thermastat, bad water pump or your radiator heater core is clogged

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.

Greg Bernett

• 2993 Answers
• Posted on Apr 01, 2009

SOURCE: 2000 mercury sable drive belt

For VIN 2 FLEX Fuel:

For VIN U and S....with A/C:

PLEASE DON'T FORGET TO RATE!!!!

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: my 2000 mercury sable the

Have you checked for air in the system ? Some of the V-6 engines have an air bleeder on top of the intake manifold to release trapped air. What you do is fill the rad to the top , start the cold engine and open the bleeder untill fluid comes out meaning the air has been vented. With air in the system the heater does not transfer heat efficently. You can also vent an engine by squeezing the upper radiator hose with the engine off and cold. Never open a hot system. The squeeze method is easy. With cold engine remove the cap and fill the radiator almost to where it will spill over. Then slowly squeeze the upper radiator hose and you will see the air escape. When you release the prussure you will see the level drop slightly. Now if you do not have air in that system you will need to check the heater core flow. With everything closed up and full start the engine and let it warm up. Now feel the two hoses in and out of the heater core where it goes thru the firewall in one is cold and one is warm then your heater core is plugged. You can try a flush at this point but it usually needs to be replaced. Thanks for asking at Fixya.com.