Question about 1993 Mercury Sable

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1993 mercury sable

The car keeps overheating i have by passed the heater core,put a new thermastat in , flushed the system out, replaced the radiator and cap, the previous owners put a new water pump in, the radiator pressure is holding 16lbs there is no water in the oil and no leaks anywhere plzzzz help!

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  • Anonymous Mar 13, 2014

    radiator is pumping fluid through cap once engine is warmed up

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  • 117 Answers

Does the car make a squeking noise when you start it?

Posted on Jul 01, 2008

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While driving my 1998 Mercury Sable with the heat on. It will start out with really warm heat and then 40 seconds later it willstart to cool down. If I turn off the heat and wait wait a minute it will


This sounds like a classic problem with the heater core. The heater core is like a small radiator that is located under the dash (likely). If the vehicle hasn't been maintained properly with regard to the coolant, the heater core can become clogged over time and need to be replaced. Years ago, there was also a problem with mixing the green and red coolant. This caused the fluid to gel especially in the smaller passages of the radiator and the heater core. Did you install an in-line port when you flushed the system? A little household water pressure flowing thru the system might help blow the clog out. Other than that, replacing the heater core Will likely solve the problem. Good luck!

Jan 15, 2012 | 1998 Mercury Sable

1 Answer

99 mecury sable replaced thermostat and housing freeze plugs heater core radiator head gaskets and heads... still over heats going up hills and heater not working.


heater cores is probly pluged take a garden hose and try to flush it out. usualy the heater core is the waterpump bypas. it also could be that ur radiator fans arnt running

Nov 18, 2010 | 1999 Mercury Sable

1 Answer

PUT KNEW THERMASTAT IN STILL BLOWING COLD AIR THE EXPERT TOLD ME


Most auto supply stores sell a radiator flush kit. You install an adapter in the heater hose and hook up a garden hose to the adapter. You must start your car and run the heater in the max hot position to flush the heater core.

Dec 16, 2009 | 1987 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

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

1 Answer

No heat


if engine temp is normal after running awhile. i would try to flush the heater core.(disconnecting the heater hoses from engine and flushing separately) ford cars and trucks have a "brown coolant" problem and the coolant will eventually clog heater core.

Dec 13, 2008 | 1999 Mercury Sable

3 Answers

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

Nov 25, 2008 | 1999 Mercury Sable

2 Answers

1993 mercury sable


if you are sure all of the above is correctly installed then the only othet thing i can think of if it isnt loosing coolant is either the guage or the sender unit is faulty,
if its not loosing coolant and the radiator isnt filled with muck then it really cant be anything else.
one other thing might sound silly but check that the thermo fan if its got one is coming on or if there is a plastic bag or something blocking the radiator

Jul 01, 2008 | 1993 Mercury Sable

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