Question about 1999 Mercury Sable

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1999 Mercury Sable cooling system

What would cause the cooling system to blow water? Fan motors are fine, water pump is in good shape, hoses are solid...It blows coolant after normal city driving...

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  • chitariv Apr 01, 2009

    i have almost the same problem. Mine when driving in the city and it's hot outide and the fan cuts on,once you stop, i hear this thumping sound. No one seems to be able to figure it out. Once you get going again the sound stops. Then again when you come to a stop you hear it again. Any idea what it could be?




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Does it blow out white smoke?  If so it might be a head gasket issue.  I know mercury sables were infamous for head gaskets.

Posted on Mar 02, 2009


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When my sable gets in hot wheater and drives for a distanse it will blow the tranny fluid all out. if i let it coll down and refill it it drives fine. whats wrong ? Its a 1999 DOHC motor sable.

You need to have the fluid changed and replaced with fresh fluid. The reason it is currently boiling the fluid and causing it to spill out is because of the drop in viscosity of the current fluid and is unable to perform its duties. I would take it to a local AAMCO transmission shop, they have always done good work for me.

Dec 18, 2014 | 1999 Mercury Sable

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2003 mercury sable blows cool air when heater is turned on.

Most likely it is a clogged heater core. Have your heater core reverse flushed or your blend door is stuck open.

Oct 10, 2014 | 2003 Mercury Sable

1 Answer

96 mercury mystique blowing cold air when hot?

There must be a" T " hose before the heaters' radiator, that would not allow the water to circulate back to the cars' radiator to be cooled off properly. Or the switch that would open and the close the routing.

Mar 09, 2013 | 1999 Mercury Mystique

1 Answer


Two things.........either it's a bad blender motor,or more likely,plugged heater core..Remove heater hose from near thermostat and heater hose from water pump,and flush from water pump side heater hose back thru the heater core and out the thermostat side heater hose with a pistol grip type water nozzle. don-ohio

Nov 05, 2011 | 1999 Mercury Cougar

1 Answer

Not enough heat comeing out . not looseing antifreeze, not leaking on floor boards , not blowing on windshield , blows warm air on low but when on high blows cold air , have new thermostat and water pump

Check that the hoses running from the cooling system to the dashboard / firewall are not bent / creased in a position to impair the flow of hot water into the heater core in the dashboard. Disconnect these hoses at both ends, and inspect for mineral deposits, or rust, that might be blocking water passage too.

Dec 13, 2009 | 2000 Mercury Sable

1 Answer

No heat problem in a 1999 Sable

when you move the selector switch from cool to heat, do you hear the door move inside the heater box.? if not then check the blend door motor.

Aug 18, 2009 | 1999 Mercury Sable

1 Answer

Car is running hot occasionally and the serpentine

Well there's only part that has to do with the cooling system and serp belt - the water pump!! Maybe it's starting to seize or has too much play. Either way, when you change the water pump, replace the thermostat and flush the system very thoroughly, those 98-99's are notorious for rust build up. Make sure to pull the heater hoses off and flush the heater core too. After all said is done, purge the coolant and make sure there is heat from the blower. If not you're going to have to replace the heater core because that gets clogged sometimes when flushing.

Aug 07, 2009 | 1999 Mercury Sable

1 Answer

What causes over heating that is not the water pump nor the head gasket after pressure testing?

Couple of things....if your radiator is gunked up on the inside or the outside even from debris, that can cause poor flow/circulation and not cool enough for your motor. Also, the thermostat can stick and cause overheating. One last thing, the fans. If the fans aren't running you won't get proper cooling either....that's pretty much it!

Jun 28, 2009 | 1999 Mercury Sable

3 Answers

1999 mercury sable

the rust issue is related to the design of the cooling system, in a word ford screwed up, air gets trapped in the system and causes it to rust, the heater core is most likely plugged with rust, pull the hoses off at the firewall to the core and back flush the heater core, this should ge the rust out, then have the cooling system flushed with a power flusher, this will be a shop repair but there is no way around it, u may want to contact Ford/Mercury about a possible recall on the cooling system for this rust issue, as far as the A/C goes it is not related, does the compressor engage? let me know.

Dec 30, 2008 | 1999 Mercury Sable

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