Advice on HVAC replacement - Chevy Impala SS Forum
 
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post #1 of 3 (permalink) Old 06-28-2016, 09:23 PM Thread Starter
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Advice on HVAC replacement

So back in 2008, lost my AC, due to the control arm rubbing on the manifold line. The whole system has basically sat open for 8 years. The compressor was working fine when my refrigerant escaped. do I risk simply putting on a new manifold hose set and accumulator and orifice tube and just charge the system (after flushing), or would you all recommend a new compressor, evaporator and condenser as well?

Thanks for advice...

'95 DGM Impala SS, 383, LT4 cnc heads, LT4 matched intake, Holley 58 mm t/body, GM 846 cam, GMPP 1.5 rr's, F-body MAF, BH OBD I PCM, LT4 knock module, K&N cold air, Edelbrock headers, Flowmaster exhaust, BBHP #73 6-speed, 4:10 gear, sloted and drilled rotors, Z28 cluster.

'96 Buick Roadmaster Limited Wagon, mostly stock.

74 Ford F100, 390 HP pulled out of a 67 Fairlane GT

91 Mustang LX notchback, 5.0L, 63,000 miles, pristine.
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post #2 of 3 (permalink) Old 06-29-2016, 12:15 PM
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I was in the same boat when I bought my wagon. AC hose rubbed on control arm, and everything leaked out long before I bought it.

I replaced the orifice tube, hose set, and receiver/drier accumulator, added oil to everything, then pulled a vacuum and tried to recharge it.

While recharging it the compressor started making noise, then locked up. I tried because I'm a cheapass and didn't want to spend a lot of $

@ the least if I was you, I'd pull the compressor, and see how much oil is in it, and if it shows any metal shavings etc. in it.
I probably should have, but oh well.

Mine now has new condenser, and compressor, and works very well.
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post #3 of 3 (permalink) Old 07-11-2016, 10:26 PM
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8 years? Yikes. Compressor could be living in corrosion city.

Dump the:

Compressor
Orifice Tube
Drier/Accumulator
Manifold & Hoses
Condenser

Flush the system, and pull a real good vacuum for a long time, as in hours. Split up the oil between components. Put some in the drier, some in the compressor, some in the condenser.
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