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Heat was working fine in my car and then the outside temp…

Customer Question
Heat was working fine in...
Heat was working fine in my car and then the outside temp dropped to zerp degrees and heat only blows cold air. when the outside temp is higher the heat works normal again. also top rad hose is hot but doesnt feel like any pressure inside of it.
Submitted: 2 years ago.Category: Mercury
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Customer reply replied 2 years ago
correction 99 cougar
Answered in 30 minutes by:
1/18/2016
Mercury Mechanic: Amedee, Mercury Technician replied 2 years ago
Amedee
Amedee, Mercury Technician
Category: Mercury
Satisfied Customers: 28,320
Experience: ASE certified Technician advanced level specialist. Wisconsin certified emissions state inspector
Verified

Hello and welcome! My name is ***** ***** I can assist you witrh your question. This is caused by low coolant level, air pockets in the cooling system and or a bad thermostat.

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Customer reply replied 2 years ago
coolant tank is full. not sure if it is getting where it needs to go though. and not sure how to bleed the coolant system to get the air pockets out
Customer reply replied 2 years ago
engine is also running at normal temp not changing at all.
Mercury Mechanic: Amedee, Mercury Technician replied 2 years ago

You can bleed the cooling system by warming up The engine with the radiator cap off. Must do this when it's cold. But if that's not the problem then I would suspect a bad thermostat plug radiator or heater core.

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Mercury Mechanic: Amedee, Mercury Technician replied 2 years ago

Hello! It's Amedee from just answer.

I am just checking in to see if you need any further assistance?

Let me know!

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Mercury Mechanic: Amedee, Mercury Technician replied 2 years ago

.

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