A/C stuck on DEFROST.! Its HOOOOTTT here in dallas.! - Diesel Forum - TheDieselStop.com
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Old 05-28-2006, 01:57 PM   #1 (permalink)
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A/C stuck on DEFROST.! Its HOOOOTTT here in dallas.!

Hey anyone,

2000 f250.

my ac is stuck on the defrost mode...the swtich will not move the air to face or floor or anywhere else..anyone has the problem before?

could it be my vaccuum door flap or acenuator(?) or is it all sensors?? it blows cold air and now it flips back and forth to hot and cold..

any help would be great.. i am about to tear the dashboard!

m
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Old 05-28-2006, 02:30 PM   #2 (permalink)
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Re: A/C stuck on DEFROST.! Its HOOOOTTT here in dallas.!

[ QUOTE ]
Hey anyone,

2000 f250.

my ac is stuck on the defrost mode...the swtich will not move the air to face or floor or anywhere else..anyone has the problem before?

could it be my vaccuum door flap or acenuator(?) or is it all sensors?? it blows cold air and now it flips back and forth to hot and cold..

any help would be great.. i am about to tear the dashboard!

m

[/ QUOTE ]

DO NOT tear into the dashboard. It's a vacum leak, or bad vacum pump, or lastly a fuse.

Most common is a leak. Do you have 4x4 w/switch in dash? Check lines going to hubs. You can take out the tee with the lines going to it by the vacum pump and bypass it too.
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Old 05-28-2006, 03:23 PM   #3 (permalink)
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Re: A/C stuck on DEFROST.! Its HOOOOTTT here in dallas.!

My guess is the vacume pump. Little thing on the pass side fender. We just had to replace ours on our 2000. It was $115 from Ford.
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Old 05-28-2006, 07:35 PM   #4 (permalink)
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Re: A/C stuck on DEFROST.! Its HOOOOTTT here in dallas.!

My 2000 model F350 did the same exact thing last year. It was the fuse.
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Old 05-28-2006, 10:06 PM   #5 (permalink)
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Re: A/C stuck on DEFROST.! Its HOOOOTTT here in dallas.!

hey lefty,,

do you happen to rememebr what fuse number it was?

thanks
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Old 05-29-2006, 01:46 AM   #6 (permalink)
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Re: A/C stuck on DEFROST.! Its HOOOOTTT here in dallas.!

Duplicate post

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