here we go again, A/C
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HT4100 4.1, 4.5, 4.9 Discussion, here we go again, A/C in Cadillac Engine Technical Discussion; well my newest problem was my AC coil was shorting out and fried a fuse plug because the water pump ...
  1. #1
    wiskerbizkit is offline Cadillac Owners Member
    Automobile(s): deville
    Join Date
    May 2009
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    here we go again, A/C

    well my newest problem was my AC coil was shorting out and fried a fuse plug because the water pump was leaking on it. replaced both the wp and the ac compressor. I recharged it with about 2.2lbs of r134a and now i get no cold air. the compressor is kicking in just fine, cycling fine. But no cold air just outside air. If i turn the heat up it does get hot. The obd threw some F codes at me but theyre gone now. the service AC light was on but not anymore. one of the AC tubes is getting real cold but nothing stil. maybe it need more refridgerant but it does say 2.42lbs on the reciever. any help would be greatly appreciated.

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  3. #2
    wiskerbizkit is offline Cadillac Owners Member
    Automobile(s): deville
    Join Date
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    Re: here we go again, A/C

    if anyone was wondering. I pulled the orifice tube and it looked almost indescribably clogged. looked like someone had plunged it into bearing grease mixed with soot. i replaced it and it was real cold and fully circulating. drove like 6 miles and it was cold the whole time. I'll keep you posted.

  4. #3
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
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    Jun 2004
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    Woodstock Ill.
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    Re: here we go again, A/C

    If the orifice tube was clogged, you need to replace the accumulator, condenser and compressor AND flush all the lines. Sounds like "Black Death".
    http://autoacrepairs.com/gpage11.html

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