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Car Forum / Chevrolet / Chevrolet Trucks / December 20041991, S10, V6, 2.8, AC, grinding noise?
When the AC cycles on the pulley makes a grinding noise that vibrates the truck. When the pulley is not spinning it is quiet. Is the compressor gone, needing replaced? If so, can the compressor be replaced easily? > When the AC cycles on the pulley makes a grinding noise that vibrates the > truck. > When the pulley is not spinning it is quiet. > Is the compressor gone, needing replaced? > If so, can the compressor be replaced easily? It could be the bearing gone to pot, but replacing it means a new clutch assembly, almost as much cost wise as a new compressor. 91 was still R-12, so this might be a good time to upgrade to R-134a. And stay away from rebuilt R-4 compressors. You can buy brand new AC Delco for the same price as rebuilt 4 seasons. Replace the dryer, replace the orifice tube, flush the system thoroughly, vacuum it and have it charged. Find a good ac tech who does a lot of retros, 134a will cool as well as r12 if the pressures are right, and the fan clutch is in good shape. I did mine a couple years ago, lost the exap. this summer, shop owner I took it to I've known for a while, when he was done, it cools better than it ever has. Whitelightning >> When the AC cycles on the pulley makes a grinding noise that vibrates the >> truck. [quoted text clipped - 18 lines] > when he was done, it cools better than it ever has. > Whitelightning Thanks. Sounds pretty complicated, think I'll take it in and have it done rather than doing it myself. You know, I have noticed that R134a cools excellent in a retrofited R12 system. But why doesnt a R134a system cool the same as a retrofited system or better. Being its newer you would think it would. >> When the AC cycles on the pulley makes a grinding noise that vibrates the >> truck. [quoted text clipped - 18 lines] > when he was done, it cools better than it ever has. > Whitelightning > You know, I have noticed that R134a cools excellent in a retrofited R12 > system. But why doesnt a R134a system cool the same as a retrofited system > or better. Being its newer you would think it would. I think a major problem today is the condensers and evaporators are too small in a lot of cars and light duty trucks. My job causes me to use rentals on a fairly regular basis, and I try to rent different models each time. The GMs aren't too bad over all but the Caviler and the S-10 pickup I rented earlier this year left a bit to be desired, Chryslers cool well except the Neon I rented last year, and fords don't cool worth a damn. Also cabin design plays a big part. My S-10 Blazer blows cold air, 41 degrees on high fan with an outside temp of 96 degrees humidity in the 60% range, at a fairly decent air flow, but the heat gain from all the glass can tax it sometimes in the summer (I am in Florida). I got a friend with the same year only a pick up and his air will drive you out of the cab. Whitelightning What year did the S-10 switch to the R-134a cooling system? I'm looking for a real nice GMC or Chevy S10 to drive to work to save some miles on my Sierra '04. I don't want to buy a headache if I can help it. > When the AC cycles on the pulley makes a grinding noise that vibrates the > truck. > When the pulley is not spinning it is quiet. > Is the compressor gone, needing replaced? > If so, can the compressor be replaced easily? It could be the bearing gone to pot, but replacing it means a new clutch assembly, almost as much cost wise as a new compressor. 91 was still R-12, so this might be a good time to upgrade to R-134a. And stay away from rebuilt R-4 compressors. You can buy brand new AC Delco for the same price as rebuilt 4 seasons. Replace the dryer, replace the orifice tube, flush the system thoroughly, vacuum it and have it charged. Find a good ac tech who does a lot of retros, 134a will cool as well as r12 if the pressures are right, and the fan clutch is in good shape. I did mine a couple years ago, lost the exap. this summer, shop owner I took it to I've known for a while, when he was done, it cools better than it ever has. Whitelightning Then keep your Sierra. Mini-trucks are NOTHING but a headache from start to finish, and you WONT beat the gas mileage on your f/s. GMC Gremlin > What year did the S-10 switch to the R-134a cooling system? > I'm looking for a real nice GMC or Chevy S10 to drive to work to save [quoted text clipped - 26 lines] > when he was done, it cools better than it ever has. > Whitelightning In article <Ek8td.1044667$Gx4.615686@bgtnsc04- news.ops.worldnet.att.net>, phake@psudo.com says... > Then keep your Sierra. > Mini-trucks are NOTHING but a headache from start to finish, and you WONT [quoted text clipped - 13 lines] > > > Is the compressor gone, needing replaced? > > > If so, can the compressor be replaced easily? I TOTALLY disagree. My '92 S-10 is a TANK! It has 187,000 miles and all I ever have done to the engine is a new distributor. Other routine stuff, sure but overall this is one tough little monkey. BTW, it does not burn oil. Others must think so too... I get folks all the time wanting to buy it. I wish I had another exactly like it.  SignatureDrum- > In article <Ek8td.1044667$Gx4.615686@bgtnsc04- > news.ops.worldnet.att.net>, phake@psudo.com says... [quoted text clipped - 28 lines] > > I wish I had another exactly like it. my 89 s-10 234,000 miles 25 mpg 4X4 been plowing snow with it since 1995 Everything Original except for the spark plugs Hi! I must say that I disagree, even with the rattle in the door that won't go away, I still love my S-truck and have no doubt it will last a long time. The main reason I got it was because the full size trucks looked goofy! http://greyghost.dyndns.org/2003s10/ William The Guesser Hi William - I had a rattle in my door too. I pulled the interior from the door cause the window was sticking. The regulator in held in with six little bolts and one was missing. The regulator was rattling against the door. . > Hi! > [quoted text clipped - 5 lines] > > William The Guesser |
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