A/C system is LOUD
Cruising
Joined: Oct 2003
Posts: 11
Likes: 0
From: Houston TX
Re: A/C system is LOUD (vectorz)
It is not your A/C that is loud. When you turn on your A/C it activates the two cooling fan motors. You are hearing your fan motors! Maybe!
[Modified by 6speedcorvette, 5:13 PM 12/7/2003]
[Modified by 6speedcorvette, 5:13 PM 12/7/2003]
Drifting
Joined: Apr 2001
Posts: 1,779
Likes: 6
From: LOS ANGELES CA.
Re: A/C system is LOUD (vectorz)
When I turn the air conditioner up high my fans are loud also.I would think its normal.The fans are turn at a rather high revolution.Try turning the fan down and see if that quiets the fans.If so,than its just the RPM's.Nothing to worry about. :chevy :chevy :flag :chevy :chevy
Thread Starter
Melting Slicks
Joined: Oct 2003
Posts: 2,183
Likes: 5
Re: A/C system is LOUD (ROD BROWN)
I just checked again, and I'm sure it's not the fans. It's either the compressor or condensor. It's the pulley with a fan belt on the passenger side of the engine, and is small.
Le Mans Master
Joined: Oct 2000
Posts: 6,507
Likes: 722
From: Sausalito CA
Re: A/C system is LOUD (vectorz)
Yes there is a lubricate that is installed with a recharge...however, it is a minuscule amount and my 02 is that the lube will not cure your noise.
If you are sure it is under your hood and it is your compressor and not a belt tensioner (notorious for noise) your compressor may have worn its bearings and you need a replacement.
Check your belt and brackets for alignment upon assembly as mis-alignment will cause premature bearing failure.
Good hunting.
If you are sure it is under your hood and it is your compressor and not a belt tensioner (notorious for noise) your compressor may have worn its bearings and you need a replacement.
Check your belt and brackets for alignment upon assembly as mis-alignment will cause premature bearing failure.
Good hunting.
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Advanced
Joined: Sep 2002
Posts: 50
Likes: 0
From: Fort Worth Tx
Re: A/C system is LOUD (vectorz)
The compressor clutch went out on my 99 and caused a terrible sound. It was a metal on metal grinding present only during compressor cycles. This is the easiest and cheapest fixed. The clutch was $30 from a local parts store and did not require removal of the compressor or recharging of the system. You will need a compressor clutch removal/installation tool.
Just thought of one more point to make on the clutch. Clutches do go bad with age, but they can also be an indication that something else is wrong. If the compressor has internal damage then it will become hard to turn and will wear the clutch out. My AC was still working despite the noise so I felt it was worth the gamble to try the $30 clutch before replacing a $350? compressor.
I cant recall hearing one firsthand, but I believe the compressor will make a noise similar to crushing gravel untill it eventually siezes.
The pulley bearing is spinning even if the AC is off, so if the noise does not go away when you turn off the AC then this is your culprit.
Best of luck, hope this helped some.
Just thought of one more point to make on the clutch. Clutches do go bad with age, but they can also be an indication that something else is wrong. If the compressor has internal damage then it will become hard to turn and will wear the clutch out. My AC was still working despite the noise so I felt it was worth the gamble to try the $30 clutch before replacing a $350? compressor.
I cant recall hearing one firsthand, but I believe the compressor will make a noise similar to crushing gravel untill it eventually siezes.
The pulley bearing is spinning even if the AC is off, so if the noise does not go away when you turn off the AC then this is your culprit.
Best of luck, hope this helped some.