a/c shuting off - Ford Powerstroke Diesel Forum

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post #1 of 12 Old 05-24-2012, 02:22 PM Thread Starter
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a/c shuting off

everythings good with the Freon and new cycle switch, orifice tube and pulled vacuum on it and it has no leaks.it works great most of the time. then out of thew blue it will shut off and not come back on. I can gas it hard and it will come back on????????????????????? what can cause this. guess im going to change the high and low side valves out next


04 f350
03 turbo sct with loone tune
arp studs Sinister Diesel EGR Delete
ran a 8.78 in 1/8
full suncoast trans with billet converter and input shaft
4" ss turbo back bullydog 4" to 6" mrbp tip
8" procomp ,procomp tracion bars on 20x12 35"
3.73 gears and trutrac
volant intake
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post #2 of 12 Old 05-24-2012, 06:30 PM
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i have the same problem one day it works great and then sometimes it blows hot no rhyme or reason. It does it both with or without a load. Im sure someone can help steer us in the right direction
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post #3 of 12 Old 05-24-2012, 06:34 PM
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sounds like a vacuum leak to me.

White 04 F350 Lariat SRW/CC/LB/FX4 227,XXX+
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post #4 of 12 Old 05-24-2012, 06:42 PM Thread Starter
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If ots a vacuum leak. Y would it start working after flooring it? And where would the leak be. Is it by tge a/c unit


04 f350
03 turbo sct with loone tune
arp studs Sinister Diesel EGR Delete
ran a 8.78 in 1/8
full suncoast trans with billet converter and input shaft
4" ss turbo back bullydog 4" to 6" mrbp tip
8" procomp ,procomp tracion bars on 20x12 35"
3.73 gears and trutrac
volant intake
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post #5 of 12 Old 05-24-2012, 06:49 PM
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Have you actually looked at the ac compressor to see if it shutting off? if not then its not the ac.

Beautiful truck by the way.

White 04 F350 Lariat SRW/CC/LB/FX4 227,XXX+
Studs/BPD58V FICM Atlas40/BPD oil cooler/waterpump/7.3 fan
Edge insight CTS EGT/Turbo timer/FP SCT with ? Tune
Powermax w/KC billet wheel Warren 175/30%
5-8" MBRP Off Road Turbo Back/harpoon
2" Leveling/33' BFGATKO
ELC/PMM Coolant filter
aFe Stage2/EGR Delete


Semper Fidelis (Always Faithful) is the motto of the Corps. That Marines have lived up to this motto is proved by the fact that there has never been a mutiny among U.S. Marines.
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post #6 of 12 Old 05-24-2012, 07:03 PM Thread Starter
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Yes the compressor shuts off. And thanks


04 f350
03 turbo sct with loone tune
arp studs Sinister Diesel EGR Delete
ran a 8.78 in 1/8
full suncoast trans with billet converter and input shaft
4" ss turbo back bullydog 4" to 6" mrbp tip
8" procomp ,procomp tracion bars on 20x12 35"
3.73 gears and trutrac
volant intake
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post #7 of 12 Old 05-24-2012, 07:08 PM
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Quote:
Originally Posted by ptr34 View Post
Yes the compressor shuts off. And thanks
That sucks. could be your compressor going out too then. There is a screen somewhere in the darn system that could be clogged causing the coolant not to be able to pass through.

White 04 F350 Lariat SRW/CC/LB/FX4 227,XXX+
Studs/BPD58V FICM Atlas40/BPD oil cooler/waterpump/7.3 fan
Edge insight CTS EGT/Turbo timer/FP SCT with ? Tune
Powermax w/KC billet wheel Warren 175/30%
5-8" MBRP Off Road Turbo Back/harpoon
2" Leveling/33' BFGATKO
ELC/PMM Coolant filter
aFe Stage2/EGR Delete


Semper Fidelis (Always Faithful) is the motto of the Corps. That Marines have lived up to this motto is proved by the fact that there has never been a mutiny among U.S. Marines.
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post #8 of 12 Old 05-24-2012, 07:14 PM
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Could it be something electronic? I drove a newer truck and the a/c quit and it was the control switch (it had dual zone). Good luck. Coach.

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post #9 of 12 Old 05-24-2012, 07:19 PM
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At this point it could be anything. I hate to say it but your probably going to have to take her in.

White 04 F350 Lariat SRW/CC/LB/FX4 227,XXX+
Studs/BPD58V FICM Atlas40/BPD oil cooler/waterpump/7.3 fan
Edge insight CTS EGT/Turbo timer/FP SCT with ? Tune
Powermax w/KC billet wheel Warren 175/30%
5-8" MBRP Off Road Turbo Back/harpoon
2" Leveling/33' BFGATKO
ELC/PMM Coolant filter
aFe Stage2/EGR Delete


Semper Fidelis (Always Faithful) is the motto of the Corps. That Marines have lived up to this motto is proved by the fact that there has never been a mutiny among U.S. Marines.
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post #10 of 12 Old 05-24-2012, 09:02 PM
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I'm assuming you know that the AC compressor cycles under normal operation since you mentioned replacing the cycle switch. Does the air out of the vents warm up when the compressor shuts off like that?

Maybe check the specs on the clutch. If the gap is too much it will not work properly and if it's too small it could hang up and cause more problems. It needs to be just right.
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