A/C Rebuild not cold enough

Discussion in 'Technical' started by rosalindr, Aug 18, 2008.

  1. blugene

    blugene Senior member Supporting Member

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    Altho true, I think she has a problem. Wish I were there to check it for her...
     
  2. Andysutt

    Andysutt '72 Comet GT

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    Oh, I do also, I just think the insulation is part of it.
     
  3. ford84stepside

    ford84stepside Lone Wolf

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    A couple of questions, Roz: Is the compressor kicking in? If it is, the center of the pulley where the bolts are located will be turning. If not, check to be sure there is 12 volts on the wire going to it. If it is working, touch the lines coming out momentarily. One should be cool, or even cold, with water condensing on it, and the other should be warm, or even hot [that's why I said momentarily, the high, or hot side can burn your hand]. If there is not any difference in temp of the two lines, then you don't have enough freon in the system. It is possible if they didn't replace all the "O" rings on the lines, that the freon could have leaked out overnight. I converted a Chevette a few weeks ago that pulled a good vacume, then before I charged it, would leak back down. I traced every line that I had replaced, and found a cut o ring, it was bad from the factory.
     
  4. rosalindr

    rosalindr Member

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    I'll check that.

    Another thing. I had the heater control valve replaced two years ago. The place used a black one, not the silver metal like the one that was there. Is it possible that this is routing heat into the A/C?

    Roz
     
  5. mavtricks71

    mavtricks71 Member

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    If your in doubt...get a cut off switch to stop the hot water....What condition are the door flaps in inside your a/c box....the door insulation usually deteroites after 30 years...honestly after 40 years...id take the box out and rebuild the unit...and replace the insulation on the doors
     
  6. mavtricks71

    mavtricks71 Member

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    Wish i was there i would do your box...i actually loved rebuilding mine it was fun!!
     
  7. Craig Selvey

    Craig Selvey Indiana State Rep - MCCI

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    That very well could be the problem. Something to look into.
     
  8. 71gold

    71gold Frank Cooper Supporting Member

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    post # 13
     
  9. 71gold

    71gold Frank Cooper Supporting Member

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    i have one of the "black' valves on my car....i noticed when i bought it that they work...vac. close and vac. open... you may want to check to see that it is...closed with vac. on..:yup:

    ...to check...start the car...turn the A/C on...check for vac. on the hose. if there is vac. there... turn the car off, take the hose off the...H/valve and pull a vac. on the valve (don't start the car with the hose off) to see if it will close. it should be a...normal open valve...(w/no vac.)
    it took longer to write this than it does to do it...:whew:

    ...:Handshake...
     
  10. rosalindr

    rosalindr Member

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    I'm getting so many different opinions I feel like I'm a patient on House :rofl:.

    My neighbor's husband was a Chrysler mechanic and he says there's too much oil in it. My mechanic, who is very touchy about being told what to do, says the old fashioned compressor doesn't work with the new R134 freon. He says the pressure from the new stuff broke the valves inside the compressor. He said the compressor needs to be replaced and filled with R12 freon. I asked how much this would cost (the new compressor cost over $400), and he said "nothing, it's on the warrantee ." So at least he's honest. He said he can replace it on Tuesday. So I'll let you know how this soap opera ends (if it ends, those soaps never do!).

    Roz
     
  11. mavtricks71

    mavtricks71 Member

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    i Woulda stayed with R-12 in the beggining...it cools much better than 134....Yes it more expensive but worth it. My girlfriend has a new Nissan armada a/c sucks....my buddy has a new Dodge Cummins...A/C SUCKS!! i remember in the cars i grew up in ...you had to turn down the A/C cuz it was so cold.!!.....im doing R-12 in my car when i get to that point!
     
  12. rosalindr

    rosalindr Member

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    It was Steve's mistake putting the R134 in it in the first place. Now he's gonna have to eat $400 for a new condenser and R12. It's 110 degrees here today. I really need good A/C in that car. I remember my original Mavericks, and the A/C was cold. My 1996 Ford Ranger has pretty good A/C but that's designed for R134.

    Roz
     
  13. mavtricks71

    mavtricks71 Member

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    Let us know how cold it gets once you get the R-12 in there!!!
     
  14. 71gold

    71gold Frank Cooper Supporting Member

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    now would be a good time to put the.
    ...late model Sanden compressor on...:yup:

    ...:cool:...
     
  15. Craig Selvey

    Craig Selvey Indiana State Rep - MCCI

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    I would agree!!!

    ILMSC
     

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