heater probelms PLEASE HELP - Ford Powerstroke Diesel Forum

 
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post #1 of 9 Old 11-06-2007, 03:55 PM Thread Starter
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heater probelms PLEASE HELP

I've got a 99 F250 and the ****ing heat won't work. the blower is good, the heater core is hot, but it won't blow out hot air only cold. i went and bought a new temperature control unit, it worked for a few days then stoped. the ALL of the fuses in and out of the truck are good. any suggestions.
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post #2 of 9 Old 11-06-2007, 04:02 PM
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Either the blend door motor or blend door itself.

The motor sits above the heater core. Once you pull it off and test it, you will be able to tell where it attaches to the door itself.
Motor mounted.

Motor

2002 F350 CC 4x4
7.3L, 6spd, BHAF, 4" MBRP exhaust
TS 6 pos
5" lift, 35's

1991 Chevy Suburban
LT1
8" lift, 38.5" SX's
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post #3 of 9 Old 11-06-2007, 05:31 PM Thread Starter
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Do you have to pull the dash out or just fold the glove box down..
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post #4 of 9 Old 11-06-2007, 06:05 PM
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Quote:
Originally Posted by cjenne25 View Post
Do you have to pull the dash out or just fold the glove box down..
Just drop the glovebox down and you have plenty of room.

2002 F350 CC 4x4
7.3L, 6spd, BHAF, 4" MBRP exhaust
TS 6 pos
5" lift, 35's

1991 Chevy Suburban
LT1
8" lift, 38.5" SX's
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post #5 of 9 Old 11-06-2007, 06:15 PM Thread Starter
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Quote:
Originally Posted by BIGGER View Post
Just drop the glovebox down and you have plenty of room.
thanks man! i appreciate the info, took it off and it was working, so i put it back on and started working kinda weird but thanks again...
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post #6 of 9 Old 11-06-2007, 07:07 PM
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You might want to try and check if something fell down the defrost vents and is blocking the blend door. I've seen this happen many times and have recovered pens, small wrenches, hairclips, etc... that were blocking the blend door. Do your usually have a bunch of stuff riding around on your dash? If you do, this might be your problem.
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post #7 of 9 Old 11-06-2007, 07:11 PM
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does it blow out in your front vents or just the defrost? It may be a vaccum issue? I may be completely wrong about with the heater, but mine it looks like everything is controlled off of a vacuum which is also shared with the auto locking hubs unit. hope this helps

1999 Black F350 4x4 Duelly
All stock, not for long!!!!
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post #8 of 9 Old 11-07-2007, 11:52 AM Thread Starter
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hey guys thanks alot. I Got it fixed. it was what the first guy said it was. thanks a lot. living here in missouri it get pretty cold in the mornings. thanks a bunch.
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post #9 of 9 Old 11-07-2007, 04:09 PM
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Anytime

2002 F350 CC 4x4
7.3L, 6spd, BHAF, 4" MBRP exhaust
TS 6 pos
5" lift, 35's

1991 Chevy Suburban
LT1
8" lift, 38.5" SX's
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