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Thread: Rear air on 01 navigator

  1. #1

    Default Rear air on 01 navigator

    This thing has a new compressor , dryer , and orfis.
    It is coming out of the vent about 70
    Way to hot for Texas. Any thoughts .

  2. #2
    Senior Member LIMOJESS's Avatar
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    Have you checked on your Vacuum Solenoid Valve. Looks something like this. I had the same problem on my 02 Navigator last summer. It was blowing out hot air. Might look something like this.
    http://www.mtgparts.com/mm5/merchant...gory_Code=CLIM

  3. #3

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    thanks, i have a manual water shut off , but i will check that.

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    Senior Member Fairfax Limo's Avatar
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    Is the condensor fan working? system may be overcharged? also....


    http://www.manexcorp.com/Rear_ac_trblsht_gd.htm
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    Senior Member LIMOJESS's Avatar
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    if it is mtg board, make sure the circuit board, the heat overide button is off. Happend to me once a few years ago and i accidentally depressed the switch.

    Maybe try disconnecting the heat fuse from the board.

    Also lastly, take a pair of clamps and clamp the hose that runs coolant to the rear.

  6. #6

    Default Front air

    The front ac only has a vent temp of about 65
    Driving down the road ,

  7. #7

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    The problem is coming from my low side I think because the lowside is reading 60 psi if you take refrigerant out it quits blowing cool

  8. #8

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    Fans are working and and when you take refrigerant out it guits blowing as cool
    But the lowside pressure seems to be to high around 60 psi

  9. #9

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    This guide great but it doesn't say what to do when your dash temp isn't as coolas it should be

  10. #10
    Senior Member Fairfax Limo's Avatar
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    Do you have one or two compressors? How much freon did you put in after your replaced the compressor? How long did you draw down the system? We haven't had our '01 Navigator for quite some time, but my biggest complaint was A/C. It did not have a separate system for the back. Everything ran off one compressor. Who built this truck? Look and see if the rear evaporator has a Manex sticker. They are very helpful on the phone.
    FAIRFAX LIMO - Northern Virginia and Washington DC Limo Service

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  11. #11
    Senior Member LIMOJESS's Avatar
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    The older builts only used one compressor. Many of the newer builds uses dual compressor.

  12. #12

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    One compressor , how long were we supposed to draw it down
    Put 8 / 12 oz cans this is what I was told a 180 with one compressor would hold
    Here is the problem it is blowing out of the front vents at about 60 degreese and out the back about 68
    Fine until we hit three digits and , well that is almost every day here.

  13. #13
    Senior Member Fairfax Limo's Avatar
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    The 8 degree difference is pretty standard. Probably want to draw it down for at least 30 minutes to boil off any moisture. 6 pounds of freon might be too much. If overcharged its not going to blow cold. You're gonna want to add them one at a time with a/c on max and take gauge readings from the vents after each can. Should definitely be blowing much colder than 60 at the front vents. Look on the evaporator and see who manufactured it. Call them.
    FAIRFAX LIMO - Northern Virginia and Washington DC Limo Service

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    Lincoln TC 120" Stretch by DaBryan
    Lincoln TC 120" Stretch by Krystal (2)
    Lincoln TC 120" Stretch by Executive
    Lincoln TC 72" Stretch by Krystal
    Ford Excursion 180" by Legendary
    Hummer H2 200" by Krystal
    Hummer H2 180" by Craftsmen
    K33 Limobus/Party Bus (F550) by Krystal

    Fairfax Limo also offers Virginia Wine Tours

  14. #14

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    Thanks I will check this out.

  15. #15
    Senior Member LIMOJESS's Avatar
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    Use the smaller cans to add freon. Much easier to do.

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