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  1. #21
    Join Date
    Jan 2007
    Location
    Nova Scotia, Canada
    Posts
    1,441

    Default

    I think there is a temp sensor at each foot well for individual settings. Maybe it has failed on the passenger side in your case.

    Dave.
    Our Most Probable Fate Is Death !!!

  2. #22
    Join Date
    May 2010
    Location
    Philly, Pa.
    Posts
    65

    Default Climate Control

    It turns out that my climate control panel was on the fritz. My Volvo guy was gonna charge me $300 for one. However, when I balked at that, he simply hit it with his hands and it works fine. (Like the Fonz) That was FREE. Now my passenger and driver side are ice cold! I will eventually have to replace it, but for now its chilly chill!

  3. #23
    Join Date
    Jun 2010
    Location
    Dartmouth, Nova Scotia, Canada
    Posts
    157

    Default

    I am still trying to suss this out.

    It was hot today. I drove the car for an hour and a half (about 15 minutes city driving; highway for the remainder). For the duration of city driving and for about 15 minutes of highway driving I was bathed in glorious cold air, but after that, it got hot and stuffy. I could feel cool air only in the immediate vicinity of the vents, but only there.

    I messed around with all manner of settings, and near the end of the trip, I clued in to the fact that the fan was, in fact, blowing like mad, but the vents must have been shut. (The same problem is mentioned in two other threads [1, 2])

    Respondents in those threads suggest resetting the CCM. How do I do this?

    Also suggested is cleaning the temperature sensor. How is that done?

    Finally, if it needs service, would it make sense to go anywhere other than the dealer?

  4. #24
    Join Date
    Jun 2010
    Location
    Dartmouth, Nova Scotia, Canada
    Posts
    157

    Default

    I found this over on volvo-forums.com.

    Quote Originally Posted by bottomfeeder
    Here's another possibility: a bad temperture sensor that causes the a/c coil to ice up. It only presented itself on longer trips when the a/c could run long enough for the ice to build up. The more humid it was, the faster it iced up.

    The identifying symptoms were cold air would always blow from the vents, but after the coil iced up, the airflow was minimal regardless of the fan setting or vent choice. The symptoms always disappeared after the car (a/c) was turned off and sat for a few hours in the heat.

    We took the car in and after two visits the dealer replaced the evaporator (by that time it had become very musty from mold growth) and a sensor (p/n# 30665118-3, IAT sensor). It is working find at the moment, we'll see how it goes next summer.

    Ours was done under warranty and I believe that there may be a Volvo tech service note (TNN) out about the problem. IAT is short for intake air temperature sensor--I don't know if this is the same one that is in the engine control system, the engine (non-turbo) seemed to run fine despite the a/c problem.
    So ice on the AC coil builds up to the point where air can no longer pass though. Sounds exactly right.

    Has anyone experienced this?
    Last edited by cheapo; 07-04-2010 at 05:49 PM.

  5. #25
    Join Date
    Apr 2003
    Location
    Devon PA
    Posts
    11,409

    Default

    If there are no physical issues a CCM software reload may do the trick

  6. #26
    Join Date
    Jan 2007
    Location
    Nova Scotia, Canada
    Posts
    1,441

    Default

    Cheapo, the only way to properly diagnose what's going on is to first have the gauges set up on the system to see where you stand pressure-wise. You're going to have to get it in to a specialist, and start with the basics (being pressure check), and move on from there. There are several places around our city that can help, but you'll find yourself heading to Volvo of Halifax anyway because most guys won't want to touch it after that because it's a Volvo, and because there may be issues with the CCM or temperature sensors., or other AC components. Cut to the chase and drop it in over at VOH. With issues related to AC, it's really hard to be definitive on here, and most suggestions are pure speculation due to the unknown (that being system pressure). Talk to Brian Fitzpatrick. All the Volvo techs over there know their sh!t really well, and do some excellent work. Talk it over with Steve Archibald as well. He's one of the best service managers in town, and knows, eats, sleeps, breathes, and sh!ts Volvo.

    Dave.
    Our Most Probable Fate Is Death !!!

  7. #27
    Join Date
    Jun 2010
    Location
    Dartmouth, Nova Scotia, Canada
    Posts
    157

    Default

    Thanks for the advice fellers.
    She's off to VoH on Wednesday!

  8. #28
    Join Date
    Jun 2010
    Location
    Dartmouth, Nova Scotia, Canada
    Posts
    157

    Default

    I had the car back at my indy mechanic (for an appraisal) and I discussed the A/C problem with him. At first he guessed low refrigerant, but after I detailed the symptoms he jumped to the "icing up" issue described above. He wants to have a look at it, so I have canceled the appointment with the dealer. I am sure I'll have the chance to get to know them sometime.

  9. #29
    Join Date
    Jun 2010
    Location
    Dartmouth, Nova Scotia, Canada
    Posts
    157

    Default

    Quote Originally Posted by Aviator View Post
    Cheapo, the only way to properly diagnose what's going on is to first have the gauges set up on the system to see where you stand pressure-wise. You're going to have to get it in to a specialist, and start with the basics (being pressure check), and move on from there. There are several places around our city that can help, but you'll find yourself heading to Volvo of Halifax anyway because most guys won't want to touch it after that because it's a Volvo, and because there may be issues with the CCM or temperature sensors., or other AC components. Cut to the chase and drop it in over at VOH. With issues related to AC, it's really hard to be definitive on here, and most suggestions are pure speculation due to the unknown (that being system pressure). Talk to Brian Fitzpatrick. All the Volvo techs over there know their sh!t really well, and do some excellent work. Talk it over with Steve Archibald as well. He's one of the best service managers in town, and knows, eats, sleeps, breathes, and sh!ts Volvo.

    Dave.
    Annoyingly, my mechanic was unable to do anything about the issue since he was unable to reproduce it. So I have rescheduled my appointment with Volvo of Halifax for tomorrow. In the meantime, I called Yuille Auto (in Dartmouth) and got 2 ballpark estimates:
    1. Replace compressor:
      • Parts: $989.67
      • 2.5 hours labor
      • Total: $1284 + tax

    2. Replace evaporator:
      • Parts: $171
      • 13 hours labour
      • Total: $1257 + tax


    Yeesh.

    Here's hoping it's just a wee sensor or something.

  10. #30
    Join Date
    Jan 2007
    Location
    Nova Scotia, Canada
    Posts
    1,441

    Default

    Yuille Auto (in Dartmouth)
    I forgot all about those guys, Cheapo. Doug Nixon is the guy you want there; he used to work at Woodside Garage with Ian McLaren years ago, and he knows Volvos very intimately.

    Dave.
    Our Most Probable Fate Is Death !!!

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