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Heater blows cold

Tiny
SURVEYOR680
  • MEMBER
  • 1990 FORD BRONCO
  • V8
  • 4WD
  • AUTOMATIC
  • 168,000 MILES
My heater blows cold air I flushed and changed the coolant and replaced the thermostate
Friday, January 14th, 2011 AT 3:40 AM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the heater core, heater control valve and the air blend door.
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Friday, January 14th, 2011 AT 3:56 AM
Tiny
FORD MAN
  • MEMBER
  • 115 POSTS
You may have an air bubble stuck in the heater core. Also the heater control valve might be stuck if you back - flushed the system without removing it. The thermostate might not be any good, & needs to be tested to see if it opens.

Ford Man in Michigan
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Friday, January 14th, 2011 AT 5:04 AM

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