Questions on AC low pressure port and missing cap

Discussion in 'General Motoring' started by ECLiPSE 2002, Jun 21, 2010.

  1. ECLiPSE 2002

    ECLiPSE 2002 Guest

    I discovered that the cap on the low pressure port of my 2004 T&C van
    was missing and wonder if this has caused any problems. Is its purpose
    merely a dust cap (if so would any tight fitting cap suffice) or does
    it have other purposes?

    Next problem is where to find a replacement without being raped by the
    dealer. Anyone know where I might locate one?

    ECLiPSE 2002, Jun 21, 2010
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  2. ECLiPSE 2002

    KirkM Guest

    I would try a salvage yard. One from another year and/or model would
    probably fit.

    Everytime I have my A/C serviced, I always check for these before
    leaving the shop. Very few take the time to put them back after the

    KirkM, Jun 22, 2010
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  3. ECLiPSE 2002

    ECLiPSE 2002 Guest

    Thanks for the response - will try a salvage yard. Still not sure if
    the cap serves any other purpose than to keep moisture and dirt out of
    the port.

    ECLiPSE 2002, Jun 23, 2010
  4. ECLiPSE 2002

    rob Guest

    as long as the actual valve is still in the center of the port. that's what
    holds everything in . the cap works like a valve stem cap on your tire.
    keeps dirt out etc.
    rob, Jun 23, 2010
  5. Besides keeping dirt out it should have an o-ring in it and it's a
    second seal to prevent freon from leaking out if the schreader valve
    leaks a little. Usually if there is a leak you'll see oil. If you
    run by an AC repair shop they may have a cap laying around they would
    give you.
    Ashton Crusher, Jun 24, 2010
  6. ECLiPSE 2002

    ECLiPSE 2002 Guest

    Thanks to Rob and Ashton for their input.

    ECLiPSE 2002, Jun 26, 2010
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