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Ask Ron Your Own Question
Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 35595
Experience:  23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
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Heater blows cold

Customer Question

Heater blows cold
Submitted: 1 year ago.
Category: Ford
Expert:  Ron replied 1 year ago.

Hello and thank you for your question,

If you warm the engine up to normal operating temp and turn the heater on and then go out under the hood and place your hands on both heater hoses at the firewall , are both hoses getting nice and hot?

Customer: replied 1 year ago.
Luke warm
Expert:  Ron replied 1 year ago.

Luke warms means you do not have good flow through the heater core which can be caused by either the cooling system being low on coolant or the heater core is restricted. You need to start first with making sure the cooling system is full with no trapped air and if that checks okay then the next steps would be to back flush the heater core. Check this an post back if you need more help and or have more questions.