Heater not working properly

10

Asked by Samuel Jan 16, 2021 at 06:58 PM about the 2008 Dodge RAM 1500 SLT LB RWD

Question type: Maintenance & Repair

I get hot air from my heater when it’s on the lowest
fan speed setting. If I turn it on a higher speed, cold
air comes out

3 Answers
157,615

James answered 3 years ago

Sounds like the heater core is clogged. On low speed the air moving through the heater core is able to pick up more heat from the warm (not hot) heater core. When higher speeds are selected the air doesn't get a chance to pick up as much heat as it is rapidly passing through the heater core. Hope that helps! Jim

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10

Samuel answered 3 years ago

Thx. I’ll try that first without a coolant flush yet.

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Your Answer:

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