04 Expedition A/C compressor replacement
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5th Wheeling
Joined: Mar 2007
Posts: 32
Likes: 2
04 Expedition A/C compressor replacement
I need to replace the A/C compressor on my 04 Expedition XLT 5.4L. I searched for how-to articles/videos online but only found older models.
Can someone please provide instructions for this project?
Thank you
Can someone please provide instructions for this project?
Thank you
Freshman User
Joined: Dec 2010
Posts: 36
Likes: 0
From: Littleton CO
Mechanically the A/C compressor is an easy swap. But getting the system clean, dry, leak free and recharging is the challenge. Why are you changing the compressor? Did it fail (and send debris down stream)? Is it working but weak. We do A/C work at my shop. Orifice tubes, reciever/dryers, expansion valves and other parts get replaced when a new compressor goes in depending on system style and how equiped (and the nature of the problem).
Typically, the system is tested for charge. If empty, we pressure it with nitrogen and check for leaks. If system is charged we check low and high side pressures baised on ambient air temp. System gets evactuated and refridgerant stored. Parts get replaced. System has a vacuum pulled for about an hour to get all moisture out and to recheck for leaks. Oil is added (if certain parts are replaced) and a measured charge is put back in. Low and high side pressure inspected and temperature differential checked at inlet and vents.
Hope that helps.
Typically, the system is tested for charge. If empty, we pressure it with nitrogen and check for leaks. If system is charged we check low and high side pressures baised on ambient air temp. System gets evactuated and refridgerant stored. Parts get replaced. System has a vacuum pulled for about an hour to get all moisture out and to recheck for leaks. Oil is added (if certain parts are replaced) and a measured charge is put back in. Low and high side pressure inspected and temperature differential checked at inlet and vents.
Hope that helps.
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5th Wheeling
Joined: Mar 2007
Posts: 32
Likes: 2
Thanks ecam.
The A/C works fine, blows nice cold air. It just makes a "whirling" sound when turned on. Here is a video: AC Compressor pictures by ssmorsi - Photobucket
The A/C works fine, blows nice cold air. It just makes a "whirling" sound when turned on. Here is a video: AC Compressor pictures by ssmorsi - Photobucket
Fleet Owner
Joined: Apr 2008
Posts: 24,319
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From: 0,0,1
It was accurate and I did listen to the video before replying. Regardless, you still have a bad bearing inside the compressor.
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5th Wheeling
Joined: Mar 2007
Posts: 32
Likes: 2
Thanks alloro. I've heard the dryer needs to be replaced anytime the compressor is replaced. Is that true?
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Fleet Owner
Joined: Apr 2008
Posts: 24,319
Likes: 5,130
From: 0,0,1
Some people swear by this, but I've never replaced one and never had any issues for not doing so. However, if by some chance your system was open to the atmosphere for an extended period of time, or water got into the system; then I would most definitely replace it.
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