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No heat or defrost in 2002 grand marquis. Thermostat problem? on 2002 Mercury Grand Marquis

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No heat, Air conditioner is fine, windows wont defrost
(2) Answers
(3) Comments
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Your thermostat is probably not the problem, unless you have an overheating problem as well. You could have a bad heater control valve since your air conditioning is working fine.
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Proper diagnostics should be administered first, but if it is the heater control valve, the cost: parts, labor, coolant, tax is about $238.
We are located in South Sacramento. Off 99/Fruitridge Rd at 5681 Franklin Blvd, Ste C.
please expand on bad heater control valve, location and cost? thank you Thank you for youre prompt reply I did purchase a thermostat and should I try that first?
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