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Heater and Defroster

Tiny
SARGE20102001
  • MEMBER
  • 2002 FORD EXPEDITION
  • V8
  • 2WD
  • AUTOMATIC
The heater and defroster has stopped working in my 2002 Ford Expedition
Monday, December 6th, 2010 AT 1:23 AM

3 Replies

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Is it the fan that stopped?
Check fuses, resister and blower motor
let me know
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Monday, December 6th, 2010 AT 1:25 AM
Tiny
SARGE20102001
  • MEMBER
  • 2 POSTS
No the fan still works it blows cool air
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Monday, December 6th, 2010 AT 1:31 AM
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
OK then you have to do this test to determine what is going on
does the engine reach operating temp if not, check coolant and replace thermostat, if so
you need to test the heater hoses
with engine running and at operating temp heater fan motor on high open hood and check heater hoses by the firewall

if both hot you have a blend door issue
if one warm or hot and other not heater core need to be flushed
isolate heater core and flush
let me know
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Monday, December 6th, 2010 AT 1:36 AM

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