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Heater doesn’t get warm just blows cold air. How do I check…

Heater doesn’t get warm...

Heater doesn’t get warm just blows cold air

Mechanic's Assistant: Have you checked to make sure the thermostat is working? What about the coolant level?

How do I check thermostat and coolant level is full

Mechanic's Assistant: What is the model/year of your Dodge?

2012 Dodge Journey

Mechanic's Assistant: Are you fixing your Journey yourself? What have you tried so far?

Yes I’ve checked Pretty much everything. The heater core may be the issue but I don’t smell coolant or anything

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Rear heater works but only about 20mins then gets cold

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Answered in 8 minutes by:
3/13/2018
Eric
Eric, Automotive Repair Shop Manager
Category: Dodge
Satisfied Customers: 34,926
Experience: 20+ yrs. experience as repair shop manager and technician.
Verified

HI,

Ok, have you felt the heater hoses at the firewall in the engine compartment with engine running and heater on high to see if they are hot or cold

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Customer reply replied 4 months ago
One is hot and the other is cold

HI,

Ok, the inlet should be hot and the outlet should be warm to hot. With it being cold, you need to remove the hoses at the firewall and use a garden hose to flush them out - do it thru one port and then thru the other port.

Reconnect the hoses and fill system. If still blowing cold and the one hose is cold, then the heater core is restricted enough that it needs to be replaced, which entails removing the complete dash

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Eric
Eric, Automotive Repair Shop Manager
Category: Dodge
Satisfied Customers: 34,926
Experience: 20+ yrs. experience as repair shop manager and technician.
Verified
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