No cold air out of AC

Lincoln LS

  1. perpetualchange

    perpetualchange LVC Member

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    Why would DCCV stop the compressor from turning on?
     
  2. perpetualchange

    perpetualchange LVC Member

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    Also to my delight both sides COLD this morning!
     
  3. kcam67

    kcam67 Active LVC Member

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    WOW!!!!!!! Lucky you. I am glad somebody's A/C is working. After all that work and still no A/C for me :confused:
     
  4. perpetualchange

    perpetualchange LVC Member

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    Is your compressor turning on?
     
  5. joegr

    joegr Dedicated LVC Member

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    The same fuse that powers the DCCV also powers the compressor clutch. If the DCCV shorts badly enough, it will blow this fuse.
    That said, clearly your main problem was that the relay/relay socket contacts were loose or corroded. I've also seen the relay itself fail before. Usually, the relays fail after the system has been run for a long time with low refrigerant. The rapid cycling of the clutch (and relay) wears them out.

    A few more points:
    Slightly cooler on the driver's side than the passenger (at max cooling only) is normal.
    When the system is low on refrigerant, you lose cooling on the passenger side first.
    If your DCCV is bad or even just marginal, you'll get good cooling on both sides when you first start it with the engine cold. After the engine warms up, you'll start seeing the DCCV problems again.
     
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    • perpetualchange

      perpetualchange LVC Member

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      Sounds very consistent with what was happening Joe. I didn't mention this earlier but before I lost cool completely earlier this year I lost it on passenger side first. New relay and a can of refrigerant has me cool on both sides now.
       
    • RigsLS

      RigsLS Dedicated LVC Member

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      +1 sounds like my LS, the self correcting model.
       
    • perpetualchange

      perpetualchange LVC Member

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      Well Fuse 1 for AC clutch is blown again. At least I made it through work traffic.
       
    • RigsLS

      RigsLS Dedicated LVC Member

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      Faulty DCCV. It needs to be replaced!


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      Been there, done that (hated it)
      Wanna buy my t-shirt?

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