Question about 1995 Mercury Sable

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1995 merc sable,changed radiator thermostate, but the heater will not blow warm air.sometimes it will get a little warm but as soon as you turn ion the faqn its cold.

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You might need to change the heater core...
i don't believe that the radiator thermostat has to do anything with the heater...

Posted on Oct 12, 2010

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Posted on Jan 02, 2017

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1 Answer

My yruck only blows cold air wont blow warm


Could be the air flaps of the heater unit are set incorrectly or not working at all or possibly the heater radiator is blocked or semi-blocked or perhaps there is something wrong with the heater hoses or the heater water valve if one is fitted.

These things need checking before a cause can be established.

I am sometimes called upon to flush out a heater radiator. Sometimes it works and sometimes it doesn't and sometimes it causes a leak and the heater radiator must be replaced. Not an easy job on many vehicles made in the last couple of decades..

Feb 03, 2015 | Cars & Trucks

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2002 Merc Sable wont blow air


I'd have to say it's the blower motor. Does it blow hot air when the heater is on?

Aug 07, 2012 | 2002 Mercury Sable

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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

Turn the heat control from cold to hot but it still blows cold air


porbably your cabin heater (radiator like aparatus inside dash) is clogged with debris. you need to replace it if your blower works but it blows only cold air. but be sure that your engine is warm.

Sep 13, 2011 | 1995 Mercury Sable

1 Answer

My 2000 mercury sable the heater blows warm air not hot. the coolant has been checked and the thermostat has been changed still no heat. what could be the problem


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.

Dec 02, 2010 | 2001 Mercury Sable

1 Answer

I have a 1999 merc sable that will not blow hot air. A/C works fine. Replaced the Radio, Heater, A/C control panel with no help. i think it is the heater control valve but have no idea where it is. The...


acuator is undrer dash behind glove compartment. Be sure your coolent level is full . does it blow warm air on long trips and does the car come halfway up the gague when running if not change thermistat if that is not your problem check vacume line going to actuator (changes positions heat defrost and vent) make sure heat control is hooked up if none of the above are the problem replace blocked heater core please check box below if helpful

Nov 27, 2010 | 1999 Mercury Sable

1 Answer

Am coming out of summer going n2 fall..when turnin air from ac to heat it still blows cold...plz help....


Take the hoses off of the heater core (firewall) and flush the clogged little "radiator" inside your cab. You may need to pour radiator flush fluid directly into it since the Merc. has bypass WYE pipes that do not direct the flow through the heater core if it becomes blocked. The hose clamps are a bugger to get to as Ford never expected anyone to have to WORK on the car when they assembled it at the factory. Avoid damaging the sensors at the top of the intake (DPFE).

Oct 20, 2010 | 2000 Mercury Sable

1 Answer

Heater in truck blows either cold air or no air.


It sounds like you have air trapped in the cooling system. Try filling the radiator and coolant reservoir cold. Then leave the radiator cap loose and run engine at 1500 rpm until it warms up and the thermostat opens. Make sure heater is on full warm setting.

Oct 02, 2009 | 1991 Ford Ranger Supercab

1 Answer

No heat just warm air


I think you are on top of your problem,,you dont need any one elses advice.
Complete rebuild of the cooling and heating system,, simple.

Jan 19, 2009 | 2001 Oldsmobile Alero

2 Answers

Overheating


1. start the engine and leave the radiator cap open.
2. put a cardboard cover or a rug in the front of you radiator.
3. let it runs 20 minutes or more, see if it is overheated and see the water or coolant in the radiator circulated or not. If not, as soon as you have already changed water pump. thermostate and check the hoses, no leak, I think your radiator was blocked.


Did you put stop leak before?

Jun 17, 2008 | 1995 Toyota Camry

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