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AC Black death? by JMTUT
Started on: 05-15-2019 03:38 PM
Replies: 8 (372 views)
Last post by: theogre on 05-20-2019 02:07 AM
JMTUT
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Report this Post05-15-2019 03:38 PM Click Here to See the Profile for JMTUTSend a Private Message to JMTUTEdit/Delete MessageReply w/QuoteDirect Link to This Post
Would this be an example of the infamous black death. My AC runs but barely cooled so I pulled the system apart to check the lines. Below is a picture of the orifice. Looks like I'll be replacing everything. Any tips on where to buy?
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Spadesluck
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Report this Post05-15-2019 06:08 PM Click Here to See the Profile for SpadesluckSend a Private Message to SpadesluckEdit/Delete MessageReply w/QuoteDirect Link to This Post
I would believe that is close enough. ha

I bought all my stuff from Napa. I will need to open mine back up again because I need to replace the condenser.
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Daryl M
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Report this Post05-16-2019 12:10 AM Click Here to See the Profile for Daryl MSend a Private Message to Daryl MEdit/Delete MessageReply w/QuoteDirect Link to This Post
I bought everything I needed at Rockauto. Working great, and I live in Arizona.
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Report this Post05-16-2019 12:56 AM Click Here to See the Profile for SpadesluckSend a Private Message to SpadesluckEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Daryl M:

I bought everything I needed at Rockauto. Working great, and I live in Arizona.


Good point. I use rockauto as a first look then elsewhere to see the price differences. Drawback to rockauto is shipping costs. It can be unusually high sometimes.

[This message has been edited by Spadesluck (edited 05-16-2019).]

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theogre
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Report this Post05-16-2019 03:38 AM Click Here to See the Profile for theogreClick Here to visit theogre's HomePageSend a Private Message to theogreEdit/Delete MessageReply w/QuoteDirect Link to This Post
Compressor is dead. Cleaning not done Very well will kill the new unit fast. Many DIY leave dirt and flush in the system after "done" and kill new compressor often in days to a season.
Also Flushing removes old oil too and old rubber hoses can leak because old oil plugs pours in them. That often mean rebuilding hose sets w/ barrier hose made for Mobil AC require to meet EPA etc rules.

RA often looks cheaper then checkout and shipping is often more then everyone else. Worse if you want car fix quick.
AZ etc stores can get parts same or next day w/o shipping. Order online spend X and shipping is free and discounts too that can beat RA.
AZ and others take returns and cores at local stores even for online orders.

RA is a handly reference but I buy local interdependent stores, AZ or AdvanceA because of above.
AZ AA just needs a Phone # to honor Warranty parts too. No BS of receipt printed on thermal or ink that fades in a few weeks like Pepboys that doesn't even honor warranty from another pepboy store.

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Dennis LaGrua
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Report this Post05-18-2019 10:20 PM Click Here to See the Profile for Dennis LaGruaSend a Private Message to Dennis LaGruaEdit/Delete MessageReply w/QuoteDirect Link to This Post
Black death indicates that your compressor has exploded internally. I agree that flushing the lines with solvent to remove the black crud is not the best idea. . AFAIK, solvents that can dissolve black death crud do not work, so most shops would repair the system will all new parts forward of the firewall. This info is from an A/C tech that I know.

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JMTUT
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Report this Post05-19-2019 01:21 AM Click Here to See the Profile for JMTUTSend a Private Message to JMTUTEdit/Delete MessageReply w/QuoteDirect Link to This Post
Thanks for all the input. I'll start saving up for all the parts.
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ltlfrari
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Report this Post05-19-2019 09:46 AM Click Here to See the Profile for ltlfrariClick Here to visit ltlfrari's HomePageSend a Private Message to ltlfrariEdit/Delete MessageReply w/QuoteDirect Link to This Post
Everything downstream of the valve/filter should be fairly good and just need a good flushing. Make sure to flush the evaporator in the heater box very well.
Everything up stream will have plenty of crud in it. that means the hose and muffler of the back of the compressor, the lines, the receiver drier and the condenser in front of the radiator. General wisdom is to replace the condenser as well as the multiple paths through it mean it is almost impossible to flush. If you keep it and just flush then you might want to look into installing an additional in line filter after it and before anything else to catch any crud that you miss.

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theogre
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Report this Post05-20-2019 02:07 AM Click Here to See the Profile for theogreClick Here to visit theogre's HomePageSend a Private Message to theogreEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by ltlfrari:
Everything downstream of the valve/filter should be fairly good and just need a good flushing. Make sure to flush the evaporator in the heater box very well.
Everything up stream will have plenty of crud in it. that means the hose and muffler of the back of the compressor, the lines, the receiver drier and the condenser in front of the radiator. General wisdom is to replace the condenser as well as the multiple paths through it mean it is almost impossible to flush. If you keep it and just flush then you might want to look into installing an additional in line filter after it and before anything else to catch any crud that you miss.
More so w/ newer cars where the condenser isn't just simple tubes like Old cars used. You can't just flush or back flush these because the insides have several channels, AKA MircoChannels, in a tube to get rid of heat faster.
See https://yorkcentraltechtalk...annel-coil-cleaning/

But even for old cars, enough black death or other compressor failure crap can get thru Orifice Tube or Expansion Valve to pollute the evaporator etc and can be hard to impossible flush them too.

You can find various compressor inlet filters/screens like AirSept A/C Inline Filter Kits but may not help to protect new compressors when flushing is done poorly.
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