got a quick question for ya'll - The 1947 - Present Chevrolet & GMC Truck Message Board Network

southernmutt33 · 03-25-2004, 07:37 AM

ok i got a 84 3/4 gmc with a 454, granny 4 spd....ok i just got the truck about 6 months ago...i noticed that the a/c was unplugged under the hood....the other day i figured i would plug it in to see if it worked....ok it works, but the a/c compressor ,akes the gawd afulest screaching noise you have ever heard. ok i dont know anything about a/c other than they work or dont work....so bear with me if i dont know all the correct part names.....ok can you just replace the pully assembly or does it have a clutch like a fan..or do you have to replace the whole thing....is there a way to oil it or add a lubricant to it....once you start driving it it does quite down an somtimes doesnt do it at all.....but it always comes back...so i dont know if it is doing it just because it hasnt been used in a long time or what.....it does blow cold air, not as cold as my 98 taurus, but is quite cool...may need to be recharged....

Slonaker · 03-25-2004, 11:26 AM

The clutch on my A/C was bent, and would slip as a result. It made a horrible screeching noise, and burned the paint off the clutch. That could be your problem, but it is hard to say without seeing it.

BTW, when I replaced my clutch, it was almost the same price if it had an A/C compressor attached to it. I bought it with the compressor, and the compressor went on a shelf in the garage. I need to change out the compressor now, so I'm glad I bought both.

Slonaker

rolson1039 · 03-25-2004, 01:46 PM

pep bopys or auto zone sell the clutches seperately and if i remember correctly on my old caravan it was like $50 the compressors are alot more with the new clutch it is possible something in the compresor is bad causeing the clutch to go thats what eentually happened to my caravan.. to change the clutch ya ned a gear puller if memory serves me correct but its a half hour job and quite easy

southernmutt33 · 03-26-2004, 02:08 AM

hey thanks for the info guys....appreciate it.............

85Silverado · 03-27-2004, 12:01 AM

I'm not sure...but doesn't the coolant (freon whatever) also act as a lubricant in there? That's assuming that what was disconnected would leak out all the freon.

southernmutt33 · 03-27-2004, 02:10 AM

i meant the wires to the a/c were disconnected

*1FaastC10* · 03-27-2004, 12:02 PM

Quote:

Originally posted by 85Silverado
I'm not sure...but doesn't the coolant (freon whatever) also act as a lubricant in there? That's assuming that what was disconnected would leak out all the freon.

the refrigerant also carries a lubricant, you are correct. however, if the system had been opened, just as you suspected, the refrigerant would all have leaked out. if that was what happened, he would not have had working ac at all.

i'd replace both the clutch and the compressor if it were my truck. alot of times, when one thing goes, whatever is connected to it isnt far behind.

03-25-2004, 07:37 AM	#1
southernmutt33 Registered User Join Date: Mar 2004 Location: utard land, known to the rest of the world as utah Posts: 120	got a quick question for ya'll ok i got a 84 3/4 gmc with a 454, granny 4 spd....ok i just got the truck about 6 months ago...i noticed that the a/c was unplugged under the hood....the other day i figured i would plug it in to see if it worked....ok it works, but the a/c compressor ,akes the gawd afulest screaching noise you have ever heard. ok i dont know anything about a/c other than they work or dont work....so bear with me if i dont know all the correct part names.....ok can you just replace the pully assembly or does it have a clutch like a fan..or do you have to replace the whole thing....is there a way to oil it or add a lubricant to it....once you start driving it it does quite down an somtimes doesnt do it at all.....but it always comes back...so i dont know if it is doing it just because it hasnt been used in a long time or what.....it does blow cold air, not as cold as my 98 taurus, but is quite cool...may need to be recharged.... __________________ if it aint got 4 wheels an a motor,its now worth talkin about...... if ya cant afford to buy it, then be hillbilly enough to build it, it's cheaper to build it anyway..... be a man, stand up to your women an tell them your the boss, an if she dont like that, then ask her if she needs help around the house... http://public.fotki.com/southernmutt33/ 84 GMC 454, 3/4 soon to be a dually with one ton suspension. 60 1/2, lwb stepside..for sale 98 taurus, ugliest body stlye ford ever built, but dependable family car. 73 vistaliner, cab over, newest toy, reason for turnin 3/4 into 1 ton

03-25-2004, 11:26 AM	#2
Slonaker Insert Witty Text Here Join Date: Oct 2002 Location: San Antonio, TX Posts: 3,415	The clutch on my A/C was bent, and would slip as a result. It made a horrible screeching noise, and burned the paint off the clutch. That could be your problem, but it is hard to say without seeing it. BTW, when I replaced my clutch, it was almost the same price if it had an A/C compressor attached to it. I bought it with the compressor, and the compressor went on a shelf in the garage. I need to change out the compressor now, so I'm glad I bought both. Slonaker __________________ '86 Chevy C10 (Sold 04/19/13 ) Stock '01 Silverado

03-25-2004, 01:46 PM	#3
rolson1039 Registered User Join Date: Oct 2002 Location: NJ Posts: 404	pep bopys or auto zone sell the clutches seperately and if i remember correctly on my old caravan it was like $50 the compressors are alot more with the new clutch it is possible something in the compresor is bad causeing the clutch to go thats what eentually happened to my caravan.. to change the clutch ya ned a gear puller if memory serves me correct but its a half hour job and quite easy __________________ so many trucks so little time!!!

03-26-2004, 02:08 AM	#4
southernmutt33 Registered User Join Date: Mar 2004 Location: utard land, known to the rest of the world as utah Posts: 120	hey thanks for the info guys....appreciate it............. __________________ if it aint got 4 wheels an a motor,its now worth talkin about...... if ya cant afford to buy it, then be hillbilly enough to build it, it's cheaper to build it anyway..... be a man, stand up to your women an tell them your the boss, an if she dont like that, then ask her if she needs help around the house... http://public.fotki.com/southernmutt33/ 84 GMC 454, 3/4 soon to be a dually with one ton suspension. 60 1/2, lwb stepside..for sale 98 taurus, ugliest body stlye ford ever built, but dependable family car. 73 vistaliner, cab over, newest toy, reason for turnin 3/4 into 1 ton

03-27-2004, 12:01 AM	#5
85Silverado Registered User Join Date: Dec 2002 Location: Milwaukee, Wisconsin Posts: 198	I'm not sure...but doesn't the coolant (freon whatever) also act as a lubricant in there? That's assuming that what was disconnected would leak out all the freon. __________________ Paul D. '78 C20 Scottsdale 350ci 3 speed with granny gear 14 bolt rearend My trucks are "Car-Guy safe".......which pretty much means death trap in the hands of a normal civilian.

03-27-2004, 02:10 AM	#6
southernmutt33 Registered User Join Date: Mar 2004 Location: utard land, known to the rest of the world as utah Posts: 120	i meant the wires to the a/c were disconnected __________________ if it aint got 4 wheels an a motor,its now worth talkin about...... if ya cant afford to buy it, then be hillbilly enough to build it, it's cheaper to build it anyway..... be a man, stand up to your women an tell them your the boss, an if she dont like that, then ask her if she needs help around the house... http://public.fotki.com/southernmutt33/ 84 GMC 454, 3/4 soon to be a dually with one ton suspension. 60 1/2, lwb stepside..for sale 98 taurus, ugliest body stlye ford ever built, but dependable family car. 73 vistaliner, cab over, newest toy, reason for turnin 3/4 into 1 ton



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