2004 Buick LeSabre AC Clutch Issue

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2004 Buick LeSabre AC Clutch Issue

Postby kvjimbo » Mon Jul 11, 2016 11:52 pm

For several days the AC clutch will not engage intermittently. The first time this occurred turning the car off and on allowed the clutch to re-engage and it continued to function the remainder of the day. The last two days removing and reinstalling the AC fuse allowed the clutch to re-engage and again it and it continued to function the remainder of the day.
The unit blows very cold air so low refrigerant isn't an issue.
The relay next to the AC relay is identical so I thought about exchanging them, but I can't remove either of them with my fingers. Are pliers OK or should I purchase Relay Puller Pliers.
Thanks, Jim
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Re: 2004 Buick LeSabre AC Clutch Issue

Postby Tom Greenleaf » Tue Jul 12, 2016 12:03 am

Welcome Jim,

Try a quick test first with this behavior. The air gap of the compressor's clutch could be too wide just luck, use and time?

The standard is about .020 and they'll be too far for the magnetic clutch coil to pull in somewhere usually by .030 - vehicles vary.

Just trivia that cycling and plain heat of metal it's less magnetic when hotter so at first this issue, if this is erratic at first.

Worth the check to rule it out,

Tom
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Re: 2004 Buick LeSabre AC Clutch Issue

Postby ACProf » Tue Jul 12, 2016 3:22 am

Sorry Jim,

Accidentally deleted your latest response to Tom's comments "Thanks Tom, I'll try that" while deleting SPAM posts.

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