A/C leak
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    Thread: A/C leak

    1. #1
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      A/C leak

      My 02' V70's air conditioner stopped working last year. I charged it but it leaked out again within 2 weeks. Now that it's getting hot out again I'd like to tackle the issue. I couldn't find any obvious leaks under the hood or compressor area. Are there any common a/c failure prone areas in these cars? How difficult is evap core to replace or even access to check for leaks? Does the whole dash have to come out?

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    3. #2
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      A/C leak

      Quote Originally Posted by Canadian Moose View Post
      My 02' V70's air conditioner stopped working last year. I charged it but it leaked out again within 2 weeks. Now that it's getting hot out again I'd like to tackle the issue. I couldn't find any obvious leaks under the hood or compressor area. Are there any common a/c failure prone areas in these cars? How difficult is evap core to replace or even access to check for leaks? Does the whole dash have to come out?
      Pretty common for the compressor to leak at the seam between the two halves. Then again, it’s also pretty easy to tell - the green liquid will be easily spotted.

      I’ve done an evaporator on a V40 and it WAS dash out. Took me three days. Would need to look at VIDA to see if it’s the same for ours. If you take out the air filter you may be able to stick your iphone up there to take a pic of evaporator and expansion valve to see if there are traces of any leaks. Mine got bad enough that I ended up with a green blotch on the air filter itself so it was easy to make the call that dash needed to come out.


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      Last edited by bigtimemcalpine; 05-28-2020 at 09:28 AM.
      2010 V70 3.2 125,000miles
      2002 V70XC, 175,000 miles
      2004 S60 2.5T, 160,000 miles

    4. #3
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      if you pull the cover off of the firewall that is over the evaporator, that should give you a good visual of the connection. There are two square "nuts" that are actually just pressed sheet metal holding the cover on. They don't look like they should come loose, but with some pliers you'll be well on your way. Might want to take the top motor mount/strut bar off for easier access.

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    6. #4
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      This gentleman manages replacing the evap core on P2 S60 in under 6 mins

      https://youtu.be/5V4yR-2GnQQ

    7. #5
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      Quote Originally Posted by vtl View Post
      This gentleman manages replacing the evap core on P2 S60 in under 6 mins

      https://youtu.be/5V4yR-2GnQQ
      ...that looks like fun.
      2005 XC70 Crystal Green | Hilton | 16T | Bad Swede | 145k mi

    8. #6
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      Quote Originally Posted by Canadian Moose View Post
      Are there any common a/c failure prone areas in these cars?
      I've replaced many leaking condensers - especially the later ones that have the skinny receiver/drier mounted on the side with the high side service valve on top, they crack where mounted and usually leave a dye stain visible with a black light -

    9. #7
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      PAG oil used in these systems comes with UV dye, it is fairly easy to trace where it leaks with UV light, except evap core and expansion valve that are hidden.

    10. #8
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      Quote Originally Posted by Antherzoll View Post
      ...that looks like fun.
      What I was thinking. If I am gonna go that far I will be overhauling the entire system. Anyone selling the o-ring kits for the lines?

    11. #9
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      When i did the V40 I also ended up replacing most of the foam sealing strips - where the vents tubes connect to other bits in behind the dash. You may want to have some of that stuff on standby.


      Sent from my iPad using Tapatalk
      2010 V70 3.2 125,000miles
      2002 V70XC, 175,000 miles
      2004 S60 2.5T, 160,000 miles

    12. #10
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      Quote Originally Posted by Canadian Moose View Post
      Anyone selling the o-ring kits for the lines?
      Most people just find and fix the leak - and perhaps replace the receiver drier (if it's been empty, it will be full of moisture, that can freeze in the expansion valve) and use a good vacuum pump to remove any remaining moisture before a recharge. The more you take apart, the more that is likely to break.

      Unless you just really like to work on things that are not broken.

    13. #11
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      Quote Originally Posted by hoonk View Post
      Most people just find and fix the leak - and perhaps replace the receiver drier (if it's been empty, it will be full of moisture, that can freeze in the expansion valve) and use a good vacuum pump to remove any remaining moisture before a recharge. The more you take apart, the more that is likely to break.

      Unless you just really like to work on things that are not broken.
      The car is 18 years old. If I am gonna rip the system apart I might as well replace all the o-rings because chances are they are gonna start leaking right after I put everything back together.

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