A/C and marbles
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,851
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Larry-
I'm not sure what you mean by marbles, but whatever it is it sure doesn't sound good.
Low Freon won't sound like marbles, so I'd have to go with a bearing in the compressor as a guess.
If you can, turn on the ac and put a stick on the compressor. I know this sounds Bubba but it works. You'll hear the noise on the stick and know for sure.
Willcox
I'm not sure what you mean by marbles, but whatever it is it sure doesn't sound good.
Low Freon won't sound like marbles, so I'd have to go with a bearing in the compressor as a guess.
If you can, turn on the ac and put a stick on the compressor. I know this sounds Bubba but it works. You'll hear the noise on the stick and know for sure.
Willcox
Race Director
Joined: Mar 2006
Posts: 14,112
Likes: 28
From: Florida
Either there is way too much refrigerant in it, blockage on the high side or it's just wearing out.
My wife's newer Caravan has been like that at idle for a couple of years. Sounds terrible, but cools better than 99% of vehicles out there. I'll fix it when it gives up.
My wife's newer Caravan has been like that at idle for a couple of years. Sounds terrible, but cools better than 99% of vehicles out there. I'll fix it when it gives up.
Race Director
Joined: Mar 2006
Posts: 14,112
Likes: 28
From: Florida
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,851
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Most people don't realize that its just not as simple as replacing the compressor. Noonie is right too, it could be freezing up from over-charge.
Drifting
Joined: Aug 2004
Posts: 1,883
Likes: 124
From: Lubbock TX
Burning Brakes
Joined: Dec 2005
Posts: 992
Likes: 56
From: Baldwinsville, NY
JMOP,
If the belt is loose on mine it sounds like marbles because the belt is hitting a guard on the lower support rod. From there a loose belt causes the AC compressor to slip and chirp loudly.
You may want to check the belt and the belt tension, which needs to be very tight.
When mine AC is low on 134A it short cycles or will not start because of low pressure switch.
If the belt is loose on mine it sounds like marbles because the belt is hitting a guard on the lower support rod. From there a loose belt causes the AC compressor to slip and chirp loudly.
You may want to check the belt and the belt tension, which needs to be very tight.
When mine AC is low on 134A it short cycles or will not start because of low pressure switch.
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Burning Brakes
Joined: Jan 2007
Posts: 1,057
Likes: 4
From: Concord Calif
Can you identify where this noise comes from, compressor, in the dash and such? Does it seem like maybe it is the fan? Junk can get into the fan housing and get beat up by the squirrel cage fan making a sound something like you suggest. If it is a fan issue it would also do it with the heat also. Try just turning the fan on without the air to eliminate that as I problem.
Thread Starter
Le Mans Master
Joined: May 1999
Posts: 6,692
Likes: 29
From: Texas
Can you identify where this noise comes from, compressor, in the dash and such? Does it seem like maybe it is the fan? Junk can get into the fan housing and get beat up by the squirrel cage fan making a sound something like you suggest. If it is a fan issue it would also do it with the heat also. Try just turning the fan on without the air to eliminate that as I problem.
Race Director
Joined: Apr 1999
Posts: 11,520
Likes: 13
From: CORVETTE 77 385 C.I. TEXAS
Note above post. By new if you mean rebuilt, R4s are sometimes noisy or can become noisy & work for a long time. A/C guys say it takes very special equip. "a wonder to behold" to do R4s.
Thread Starter
Le Mans Master
Joined: May 1999
Posts: 6,692
Likes: 29
From: Texas
No, it was a brand new AC Delco R4. Shop that installed it is a very high quality shop in Sugarland. Does nothing but professional work. Going to check with them today.
Thread Starter
Le Mans Master
Joined: May 1999
Posts: 6,692
Likes: 29
From: Texas
Took it in already. Full of freon. No problem with clutch. Throughly inspected. Nothing wrong according to shop. Just when it is so hot outside and when sitting at light, etc., pressure can build up. They claim the R4's can make rattling sound. It is a new compressor and shop, again, it a very, very good shop. Great reputation. So, now to chase down those squirrels!