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1989 Ford Aerostar heater blows cold

Tiny
JOHBEY
  • MEMBER
  • 1989 FORD AEROSTAR
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
Why doesn't my heat work? Replaced the thermostat, reconnected the hose from the blower.
Wednesday, February 11th, 2009 AT 2:30 PM

6 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
Hi:
With the engine hot, running, and the heater on high, check to see if both heater core hoses are hot.

Let me know what you find.

Joe
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Tuesday, February 24th, 2009 AT 9:44 AM
Tiny
JOHBEY
  • MEMBER
  • 4 POSTS
Both heatercore hoses are hot and heater core also. Air blows over heatercore left to right but not comimng out hot. Checked control arms, moves damper ( little door behind heatercore) but still no hot air reaching heater vents
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Sunday, March 1st, 2009 AT 7:44 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Are you sure the blender door is working. THat is what determins if you get heat or cool air.
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Monday, March 2nd, 2009 AT 10:28 AM
Tiny
JOHBEY
  • MEMBER
  • 4 POSTS
Where is it located and what position should it be in
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Tuesday, March 3rd, 2009 AT 3:09 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
It should be located on the same housing that the heater core is in. Exact position, I can't say but it should open and close when you change from cold to hot.
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Tuesday, March 3rd, 2009 AT 10:12 AM
Tiny
JOHBEY
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  • 4 POSTS
Thanks there's a pen in there
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Tuesday, March 3rd, 2009 AT 5:46 PM

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