Intermittent A/C!

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Jun 6, 2008 | 09:04 AM

novalovr66

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Mountain Pass

Joined: Oct 2005

Posts: 100

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Intermittent A/C!

I have a problem that has been bugging me. I own a 01 Ford F350 DRW with a 7.3 PSD. The problem is, when its really warm outside the A/C will initially work ok, blows cold air for a little while then starts blowing warm air. I give the truck gas (high RPM), and i can hear a clunk, which i assume is the compressor kicking back in, then more cold air for a couple of minutes or so, then it starts blowing warm air again. Every time it starts blowing warm air i give it gas (high RPM) I can hear the clutch kick in and more cold air. I assume the clutch is going bad. Is there anything else it could be? Thanks for your help in advance!

Jun 6, 2008 | 09:11 AM

rbaker6336

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Joined: Feb 2007

Posts: 7,191

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From: Blairsville,Ga

check the air gap on you A/C clutch,sounds like you may need to remove a shim

Jun 6, 2008 | 09:13 AM

novalovr66

Thread Starter

Mountain Pass

Joined: Oct 2005

Posts: 100

Likes: 10

BTW, the truck has 122,000 miles on it and has never had the A/C clutch or compressor replaced/repaired. What should the air gap be and how do i check it?

Jun 6, 2008 | 09:20 AM

rbaker6336

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Joined: Feb 2007

Posts: 7,191

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From: Blairsville,Ga

Measure air gap between A/C clutch and A/C clutch
pulley mating surfaces at three equally spaced locations with a feeler gauge. Record the measurements.
If each of the three measurements taken is not within 0.35-0.85 mm (0.014-0.033 inch) , remove the A/C clutch.
Remove and measure the A/C clutch hub spacer. Select the appropriate thickness A/C clutch hub spacer to place the air gap within specified limits.
Install A/C clutch hub spacer and A/C clutch. Recheck air gap measurement.

Jun 6, 2008 | 01:04 PM

SpringerPop

Hotshot

Joined: Jan 2002

Posts: 17,988

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From: La La Land

Classic air gap.

Reading these would be a good place to start:

https://www.ford-trucks.com/forums/6...-question.html

and

https://www.ford-trucks.com/forums/5...ml#post4464164

Pop

Jun 6, 2008 | 01:16 PM

UP_There

Lead Driver

Joined: May 2007

Posts: 5,613

Likes: 9

From: Flagstaff, Arizona

check the gap like they said above.......also, I had a problem with the wiring in the plug. It had worn out and didni't have a good connection. Fixed the wiring, and works like a champ