1993 AC Compressor issues, bearing?
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Le Mans Master
Joined: Feb 1999
Posts: 9,935
Likes: 38
From: South Carolina
St. Jude Donor '03 & '05
1993 AC Compressor issues, bearing?
I didn't want to keep hijacking another thread.
Basically a couple years ago replaced AC clutch, as it smoked up.
Bearing seemed fine, spun easy never heard any noise.
But, besides a slight vibration on hard pulls, I have noticed my Vette runs hotter, about 30 degrees with AC on
Both fans work, and with 160 thermostat, be cool radiator and programmed to have fans come on at 185 and 190 first/second fan respectfully
As soon as I turn it off, it cools down quickly to about 195. With AC about 215 to 220.
Is that delta normal. 95 degrees here, in light traffic and stop and go up to 50. This to just give an idea.
I listened to bearing and compressor. As best I could. Compressor is quiet whether under load and on or not. But bearing, as close as I could get stethoscope by pulley, you can kind of hear it. Under load it's more noticeable.
This is with AC on max
396 LT1, 500HP at flywheel, 2800 stall and 3.73 gears, of that makes any difference
Basically a couple years ago replaced AC clutch, as it smoked up.
Bearing seemed fine, spun easy never heard any noise.
But, besides a slight vibration on hard pulls, I have noticed my Vette runs hotter, about 30 degrees with AC on
Both fans work, and with 160 thermostat, be cool radiator and programmed to have fans come on at 185 and 190 first/second fan respectfully
As soon as I turn it off, it cools down quickly to about 195. With AC about 215 to 220.
Is that delta normal. 95 degrees here, in light traffic and stop and go up to 50. This to just give an idea.
I listened to bearing and compressor. As best I could. Compressor is quiet whether under load and on or not. But bearing, as close as I could get stethoscope by pulley, you can kind of hear it. Under load it's more noticeable.
This is with AC on max
396 LT1, 500HP at flywheel, 2800 stall and 3.73 gears, of that makes any difference
Last edited by steve40th; Jun 19, 2025 at 08:53 PM.
Melting Slicks
Joined: Feb 2003
Posts: 2,677
Likes: 812
From: Saskatoon Sask.
I didn't want to keep hijacking another thread.
Basically a couple years ago replaced AC clutch, as it smoked up.
Bearing seemed fine, spun easy never heard any noise.
But, besides a slight vibration on hard pulls, I have noticed my Vette runs hotter, about 30 degrees with AC on
Both fans work, and with 160 thermostat, be cool radiator and programmed to have fans come on at 185 and 190 first/second fan respectfully
As soon as I turn it off, it cools down quickly to about 195. With AC about 215 to 220.
Is that delta normal. 95 degrees here, in light traffic and stop and go up to 50. This to just give an idea.
I listened to bearing and compressor. As best I could. Compressor is quiet whether under load and on or not. But bearing, as close as I could get stethoscope by pulley, you can kind of hear it. Under load it's more noticeable.
This is with AC on max
396 LT1, 500HP at flywheel, 2800 stall and 3.73 gears, of that makes any difference
Basically a couple years ago replaced AC clutch, as it smoked up.
Bearing seemed fine, spun easy never heard any noise.
But, besides a slight vibration on hard pulls, I have noticed my Vette runs hotter, about 30 degrees with AC on
Both fans work, and with 160 thermostat, be cool radiator and programmed to have fans come on at 185 and 190 first/second fan respectfully
As soon as I turn it off, it cools down quickly to about 195. With AC about 215 to 220.
Is that delta normal. 95 degrees here, in light traffic and stop and go up to 50. This to just give an idea.
I listened to bearing and compressor. As best I could. Compressor is quiet whether under load and on or not. But bearing, as close as I could get stethoscope by pulley, you can kind of hear it. Under load it's more noticeable.
This is with AC on max
396 LT1, 500HP at flywheel, 2800 stall and 3.73 gears, of that makes any difference
