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What makes the heat only blow cold air?.

Tiny
CANDYPAINTERCARR
  • MEMBER
  • 2005 FORD F-250
  • 10,040 MILES
What makes the heat only blow cold air?
the air only works on low and med not on high but when you change over to heat it only blows cold air not cool but cold as if you didn't change the temp or anything it will change to defrost and everything but still only cold air.
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Tuesday, October 23rd, 2012 AT 4:54 PM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check fluid level first, then check to see if actuator in heate is stuck or not working. There should be 1 on top pic enclosed
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Tuesday, October 23rd, 2012 AT 5:18 PM
Tiny
CANDYPAINTERCARR
  • MEMBER
  • 2 POSTS
Actuator seems to be working when you change the temp it moves like it is supposed to under the hood the back heater hose is not hot I do not know what the shut off valve is supposed to do
please help
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Saturday, October 27th, 2012 AT 7:10 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
The shut off valve stops the flow of coolant to the heater, both hoses hould be hot or about the same temp. Check to see why it's not working.
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Saturday, October 27th, 2012 AT 3:10 PM

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