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91 A/C accumulator

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Old May 28, 2010 | 08:33 PM
  #1  
mos68x's Avatar
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From: Ft Campbell, KY
Car: 1991 Camaro RS/Z28
Engine: 357 Edelbrock Intake & Holley Carb
Transmission: WC T-5
Axle/Gears: whatever stock is
91 A/C accumulator

I'm trying to get my A/C system running properly again. I replaced the seals on the compressor and the seal for the orifice filter, but someone said that I would probably need to replace the accumulator as well. This car has been retrofitted to the R-134a, but I replaced the compressor. Before replacing the seals and the orifice filter, with a 'shoved-in' charge with some ambient air it was blowing cool air. I just got done having the A/C system vacuumed after replacing those seals and the orifice filter and it holds vacuum just fine. Do I HAVE to replace the accumulator to get this car to blow cold air? Or will just charging it back up properly work? I know that there are a lot of variables left, I'm just trying to get this thing working again with what I can afford for this month.
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Old May 29, 2010 | 11:49 AM
  #2  
mos68x's Avatar
Thread Starter
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Joined: Nov 2008
Posts: 311
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From: Ft Campbell, KY
Car: 1991 Camaro RS/Z28
Engine: 357 Edelbrock Intake & Holley Carb
Transmission: WC T-5
Axle/Gears: whatever stock is
Re: 91 A/C accumulator

It blows much cooler air than before and I just got done with the wiring since the factory stuff didn't want to engage the clutch. I'm not sure what the problem is, all I know right now is that it isn't the high or the low pressure switches, but I'll be looking at that later sometime. I put in the oil that I had as well as the R-134a, but I didn't have enough to fully charge the system. I did notice while the compressor was running that there seems to be a leak a the bottom of the compressor on the back by a "seam". I might have to go back to a friends house and get my old compressor back as I'm not sure if this is because of the R-134a being used in a R-12 compressor or not, but it is certainly cheaper than buying a new one right now($200). I'm going to go get some more R-134a and charge it the rest of the way to see if everything operates properly once it is fully charged.
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Old Jun 1, 2010 | 08:59 AM
  #3  
NINÅ's Avatar
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Joined: Jan 2006
Posts: 3,341
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From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
Accumulation Of Knowledge

It depends on the cleanliness of the accumulator.

They cost little, so you might as well discard it with any dirt’s it’s accumulated.

Using 134 instead of 12 will not cause a good compressor to leak.


Happy Racing!



I I’ve NEVER Hit The Wall! - The Safer Barrier Prevented It
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Old Jun 1, 2010 | 11:11 AM
  #4  
mos68x's Avatar
Thread Starter
Senior Member
 
Joined: Nov 2008
Posts: 311
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From: Ft Campbell, KY
Car: 1991 Camaro RS/Z28
Engine: 357 Edelbrock Intake & Holley Carb
Transmission: WC T-5
Axle/Gears: whatever stock is
Re: Accumulation Of Knowledge

I asked some guys up at Advance about the compressor leaking and they said that it shouldn't leak either. I'll have to pick up another compressor sometime when I have the money since it's $150 for rebuilt and $200 for new. I still have yet to price the accumulator though, but I think that I probably will go ahead and replace that as well.

How can I clean out the system? Can I use compressed air and some copious amounts of alcohol to clean all the lines out and maybe even the condenser other items? Someone suggested that but I wasn't sure if that was a good way to clean it out.
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Old Jun 1, 2010 | 12:28 PM
  #5  
NINÅ's Avatar
Supreme Member
 
Joined: Jan 2006
Posts: 3,341
Likes: 10
From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
Accumulation Of Knowledge

Parts stores have a the proper chemical in cans under pressure for flushing.

However don’t flush the compressor or accumulator.

Make sure your compressed air has a water separator on it.


Happy Racing!



I’ve NEVER Hit The Wall! - The Safer Barrier Prevented It
.
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