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The heater/defrost suddenly wont put out enough.

Tiny
COLLEGEMOM
  • MEMBER
  • 1985 FORD BRONCO
  • 600 MILES
The heater/defrost suddenly wont put out enough air to keep the windows from fogging even on high, just from one drive to the next on the same day within a few hours.

Thanks,
Lynne
Sunday, November 18th, 2012 AT 6:13 AM

4 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check for a blockage in the heater as well as proper blower function. Also check to seff if all doors in heater are working to direct air it may not be directing air. Check for a vacuuum leak from engine to control to vacuum motor on heater
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Sunday, November 18th, 2012 AT 3:11 PM
Tiny
COLLEGEMOM
  • MEMBER
  • 3 POSTS
Thank you so very much, I will see what I can find. I really appreciate it, I live in Bend, Oregon, and it is starting to get pretty cold. I love my Bronco, but it is not a cold weather truck in the morning when I take my son to High School and then me to college it takes a while to warm up regardless of the heater issue.

Thanks again,

Lynne
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Sunday, November 18th, 2012 AT 7:40 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
One thing I did forget was to check to see if ou have awater valve on engine or on one of the hoses. It is run by vacuum as well and they can go bad so heat won't go to the heater. If both hoses are hot with engine warm then it's working
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Sunday, November 18th, 2012 AT 11:56 PM
Tiny
COLLEGEMOM
  • MEMBER
  • 3 POSTS
Thank you again! I will climb up and take look, I did order the Chilton manual for it but it only tells me how to fix something once I know what the problem is.

Thanks again,
Lynne
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Monday, November 19th, 2012 AT 1:14 AM

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