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Thread: A/C issues in my 2001

  1. #1
    Join Date
    Sep 2014
    Location
    Houston, TX
    Posts
    77

    Default A/C issues in my 2001

    My 2001 intermittently doesn't blow cold so it seemingly has a refrigerant leak as it has no other issues with blowing, no weird noises etc but there is a slight damp smell just before the cooling cuts out. I was just going to go get one of those kits to top it up but the slight damp smell has got me thinking it is likely worth while having a shop find & fix the leak, vacuum the system and recharge it.

    What do y'all think? What shops do the A/C work? Anyone have a guy in Houston?

  2. #2
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: A/C issues in my 2001

    You are right, it is a little low. The coil is too cold and freezing into a block of ice. That damp smell is the unfrozen water not dripping out the condensate drain. You could do this yourself and save some . I don't live in Houston, but the yellow pages will give you lots of shops that specialize in AC
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  3. #3
    Join Date
    Sep 2014
    Location
    Houston, TX
    Posts
    77

    Default Re: A/C issues in my 2001

    Thanks, by DIY do you mean just the recharge kit (am fine with doing that myself) or something further?

  4. #4
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: A/C issues in my 2001

    The kit will do fine for you
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  5. #5
    Join Date
    Sep 2014
    Location
    Houston, TX
    Posts
    77

    Default Re: A/C issues in my 2001

    Before I do something stupid can someone please confirm what port is the low pressure service port? I was convinced it was the black port at the back as that is on the larger diameter hose but then I saw that green evap service port so now I'm not so sure.


  6. #6
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: A/C issues in my 2001

    Your kit will only fit the small port, the green one
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  7. #7
    Join Date
    Sep 2014
    Location
    Houston, TX
    Posts
    77

    Default Re: A/C issues in my 2001

    Are you sure? The green port is screw on and the kit's fitting seems to big, the kit's website says it is the black one at the back (only just now looked that up)


  8. #8
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: A/C issues in my 2001

    Then use that one. Personally that is the one I would want to use anyway. The kit I had for a retrofit used the smaller one. Use the one the kit fits
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  9. #9
    Join Date
    Aug 2014
    Location
    Hunt County Texas
    Posts
    334

    Default Re: A/C issues in my 2001

    Of the two ports on the AC system the hook up will only fit one of them. The High pressure port is a different size than the low pressure port.

    Also that green capped one is not AC related. It think that's emissions related.
    1995 XJ / 4.0L / AW4 / D30 w/No-Slip Locker / C8.25 / UPCOUNTRY spec suspension / 235/75R15

  10. #10
    Join Date
    Sep 2014
    Location
    Houston, TX
    Posts
    77

    Default Re: A/C issues in my 2001

    Thanks all, it was indeed the black port at the back in my pic. However when I tested the pressure it was just inside the cone but as I charged it I could only get the pressure just w little past where it is in the pic below, is that expected? Seemed I charged it a lot (stopping, checking & shaking every 10-15 sec) so should I have just kept going or is it good where it is (local ambient temp according to wunderground is 85)? It was blowing pretty cold while sitting in the driveway.


  11. #11
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: A/C issues in my 2001

    Charging is best done with the can upside down. R134 is a blend and the lighter molecules boil off first and cool the rest. Turn it upside down and continue
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  12. #12
    Join Date
    Sep 2014
    Location
    Houston, TX
    Posts
    77

    Default Re: A/C issues in my 2001

    Gah! You'd think the manufacturer would say that then but it says to hold it upright. Where ideally should the needle be, just strongly within their cone based on ambient temp?

  13. #13
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: A/C issues in my 2001

    Yes, when running
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  14. #14
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: A/C issues in my 2001

    I should add this. The reason the manufacturer wants to have you use the can upright is that it is possible to dump too much liquid into the system and damage the compressor. So, do it slowly. In the AC industry we always charge with the can upside down, or large bottle. Even with R12, if you fully charge a system from scratch it will make the refrigerant too cold to boil off. So the trick is to use the can upside down, but charge slowly since a little liquid makes a lot of vapor once inside the system.
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  15. #15
    Join Date
    Aug 2014
    Location
    Hunt County Texas
    Posts
    334

    Default Re: A/C issues in my 2001

    The system will also get to a point where the pressure in the can is the same as the pressure in the low side of the system and you simply can't force anymore in there without switching to a new can.
    Last edited by downsy; 09-27-2014 at 05:13 PM.
    1995 XJ / 4.0L / AW4 / D30 w/No-Slip Locker / C8.25 / UPCOUNTRY spec suspension / 235/75R15

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