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My 1996 crown victoria's heater runs cold then hot and cold

Customer Question
then hot...
my 1996 crown victoria's heater runs cold then hot and cold then hot
Submitted: 1 year ago.Category: Ford
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Answered in 44 minutes by:
1/5/2016
Ford Mechanic: Jeremy, Certified Diesel Technician/Electrician replied 1 year ago
Jeremy
Jeremy, Certified Diesel Technician/Electrician
Category: Ford
Satisfied Customers: 3,393
Experience: ASE, NATEF Engines and Electrical certified, EPA 608/609
Verified

My name is ***** ***** i will assist you.

Does the air change when this happens like the flaps are moving? If not, check the coolant level first to make sure it is where it needs to be. If both of these check to be normal, then replace the thermostat. The thermostat is sticking and causing the temp changes from how cold it is outside. Instead of opening partially to the need to open, it opens fully or closes fully which indicates the thermostat is bad.

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Jeremy, Certified Diesel Technician/Electrician
Category: Ford
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