AC compressor replacement.

Discussion in 'CRD KJ's Section' started by 8675309, May 27, 2018.

  1. 8675309

    8675309 New Member

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    I have a 2006 Jeep Liberty CRD, that I purchased about three months ago.

    It's hot out, and I'm trying to keep my cool, but... when I turn the AC on, something smells like it is burning under the hood.

    The AC blows out cold air, and the compressor clutch is engaging -but it keeps engaging/disengaging every few seconds.

    I see no residue around the compressor moving parts -meaning no melted plastic or grease from bearings, etc.

    My guess is the coil is somehow melting/burning -maybe the bearings are bad, or the coil "died", or the compressor itself is "bad", or….?

    I first tried a $7.99 R134A cheapo charge (I gave it a 5% chance of fixing the problem) -thinking it was low refrigerant (it was a little, but not much). This recharge didn't fix anything (of course)…

    ----
    I see two options:

    1. Replace the compressor -downside is I need to evacuate the AC system, recharge, etc.

    2. Get a repair kit (clutch, coil, etc.) -downside is if the compressor is the problem, this will not fix.

    I'm leaning towards (1), since I want to fix it once, and not again.

    The 3.7L gasoline looks fairly easy to replace (compressor is right on top, near passenger side).

    Mine is the 2.8L diesel - I looked around under the hood, expecting the compressor to be on top somewhere, but it's buried down under the engine towards the driver side.

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    Is this major surgery just to replace the compressor…?

    Has anyone done this, and what thing(s) do I need to remove (at a minimum) to get at/replace the compressor?

    Should I attempt this from the top, or from underneath?


    Thanks,
    George
     
  2. renegade 04

    renegade 04 Full Access Member

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    I would replace both pressure switches, high and low and see if it helps.
     
  3. LibertyTC

    LibertyTC Well-Known Member Staff Member Moderator

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    Burning under the hood smells like plastic or oil? Can you see any smoke?
    With A/C I always recommend dropping by a pro AC shop for diagnostics firstly.
    Adding some refrigerant without accurate gauges, not for me.
    Tell them/shop what is up... & see what they may have to say.
    There is a way to replace the AC clutch/coil assembly & check clutch gap..Link: http://www.jeepkj.com/forum/f202/how-install-c-clutch-60421/
     
    Last edited: May 27, 2018
  4. 8675309

    8675309 New Member

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    renegade 04 -I will check this, but I’m sure the compressor (at least the coil) is toast, regardless. I don't dare turn on the AC at this point.

    LibertyTC -it smells like burning plastic or epoxy…? There's no visible smoke that I can see. Thanks for the clutch/coil replacement link.

    Right now I think my biggest problem is getting the compressor out, to take a look at it. Maybe take the driver-side tire off, and the plastic inside fender, and then I’m able to take the compressor out…?