1986 Mercury Sable heater not working

1986 MERCURY SABLE
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KRISTA KARLSSON
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Heater problem
1986 Mercury Sable Front Wheel Drive Automatic 87,850 miles
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The interior heat has gradually stopped working. I found that if I had the heat turned to off when I started the car, and then turned it to defrost after it was warm I would get a little heat. Now it does not mater what I do there is no heat.

My question: How do I determine what is wrong? Or do I just replace a part, and if so, what do I replace.

Thank you—Cold in Seattle
Dec 13, 2007 at 5:51 PM
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BMRFIXIT
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[quote:2125f362c7="Krista Karlsson"]Heater problem
1986 Mercury Sable Front Wheel Drive Automatic 87,850 miles
----------------------------------------------------------------
The interior heat has gradually stopped working. I found that if I had the heat turned to off when I started the car, and then turned it to defrost after it was warm I would get a little heat. Now it does not mater what I do there is no heat.

My question: How do I determine what is wrong? Or do I just replace a part, and if so, what do I replace.

Thank you—Cold in Seattle[/quote:2125f362c7]


check your coolant level and adjust if needed
check the thermostat
and if all good you need the heater core flushed
Dec 16, 2007 at 2:49 PM
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KRISTA KARLSSON
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Thank you so much for taking the time to answer my question. I will let you know my results after following your advice.--Krista
Dec 16, 2007 at 7:30 PM
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