Periodic Loud humming sound when A/C is engaged
#1
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I recently got the air conditioning recharged on my 1996 Jeep Cherokee (all stock). Since then there has been an aggressive humming sound coming from the passenger side under dash when the A/C is engaged. Anyone have a fix for this?
#2
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Location: Groton, MA
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Year: 1995
Model: Cherokee(XJ)
Engine: I6 4.0L
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If it's just a louder sound, but doesn't squeal, whine or growl, it may be normal.
I'd just double check with whoever did the recharge or swing it by a competent A/C shop and ask them how it sounds.
#3
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I put a new compressor in my other car, that seemed noisier than the factory compressor, so it may be normal.
Also, if the compressor is overcharged, I think it could make noise as well.
Also, if the compressor is overcharged, I think it could make noise as well.
#5
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Year: 1999
Model: Cherokee (XJ)
Engine: 4.0L
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Sounds bad doesn't it...One of the problems with having an older xj is the foam insulation that is placed in various areas of the AC system {blend doors,housing joints, etc...} begins to break down and ends up being ground up by the fan then shot out to what ever vent is convenient at the time...I'll bet you've got a big piece in there grinding away on the fan...See any small foam particles behind the vent grilles ??? Sometimes it flies out onto the seating compartment and you're left wondering just what it is and where it came from..I've been in a few XJs that sound like a harley when the AC was turned on !!
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