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I Will Be On The Lockridge Report Tuesday (Tomorrow)

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Capt._Chaos, Jul 19, 2010.

  1. Jul 19, 2010 #1
    Capt._Chaos

    Capt._Chaos Light Load Member

    62
    72
    Feb 10, 2009
    San Antonio, Texas
    0
    Good Morning all! I will be on the air Tuesday (tomorrow) at 1:00 PM CDT with Evan Lockridge to discuss truck cab air conditioning system maintenance and repairs. Much of what we will be talking about can be applied to A/C systems in cars and pickups as well. XM171/Sirius147.
     
    Capt._Chaos, Jul 19, 2010
    Capt._Chaos, Jul 19, 2010
    #1
    bullhaulerswife Thanks this.
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  3. Jul 19, 2010 #2
    CaliforniaOvernight

    CaliforniaOvernight Light Load Member

    85
    23
    May 14, 2010
    Pacific Grove, CA
    0
    Hey, thats great!

    My A/C works for some time (anywhere from 20 minutes to 2 hours) then start blowing hot air, need to be shut of for 20-30 minutes and eventually start working again.

    A/C service done at TA revealed no oil in the compressor and right amount of 134.

    My questions is, could this be drier? (never replaced in 700 000 miles) or compressor is shot and overheats?
     
    CaliforniaOvernight, Jul 19, 2010
    CaliforniaOvernight, Jul 19, 2010
    #2
  4. Jul 20, 2010 #3
    Capt._Chaos

    Capt._Chaos Light Load Member

    62
    72
    Feb 10, 2009
    San Antonio, Texas
    0
    Sounds to me like the thermostat (which has a probe in the evaporator and will disengage the compressor clutch when it gets too cold) isn't doing its job and is allowing the evaporator to freeze up. When that happens the suction side will go into a vacuum (Hooking up a set of manifold gauges and running the system for awhile should reveal this) and it will draw the oil out of the A/C compressor and then the dryer eventually becomes saturated with the oil.

    I would replace the thermostat and then reclaim the refrigerant, add about 5-6 ounces of oil to the compressor, replace the dryer, then evacuate and recharge the system.
     
    Last edited: Jul 20, 2010
    Capt._Chaos, Jul 20, 2010
    Capt._Chaos, Jul 20, 2010
    #3
  5. Jul 20, 2010 #4
    Les2

    Les2 Road Train Member

    5,150
    2,288
    Jul 25, 2008
    kicked back in my lazyboy...
    0
    I tried to listen but was unoading at the time...sorry.

    I did hear something about bringing the R12 back or something similar to it?
     
    Les2, Jul 20, 2010
    Les2, Jul 20, 2010
    #4
  7. Jul 20, 2010 #5
    Powell-Peralta

    Powell-Peralta Road Train Member

    1,585
    240
    Jul 17, 2007
    0
    You know, it's funny i was just thinking about you (for some reason) a few hrs ago; Did you even figure out your charger's running problem on the top end(near finish line)?

    Was it a fuel delivery problem?
     
    Powell-Peralta, Jul 20, 2010
    Powell-Peralta, Jul 20, 2010
    #5
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