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  1. #1

    Default 97 Chevy Suburban rear AC not blowing as cold as the front.

    I just had the system over hauled with all new rear lines and a new expansion valve. I also have a new condenser. The front blows really ice cold while the rear is cool at best. It has one compressor that runs the 2 independent AC's.

    What are the things that could cause this??? Everything was done 2 days ago so all should be good.

  2. #2

    Default

    if its really hot out , the rear AC looses a little thru the heat hitting the ruff !!!! but when u say AC blows real cold infront..I WANT THAT ONE ..lol

    1996 Suburban K3500 SLT DUALLY
    1988 Camaro RS 383 stroker LT1
    1992 32' Aero-tek Race Boat, 600 CI BBC
    WE CAN STICK A DIESEL IN ANYTHING
    SPECIALIZED IN CUSTOM CONVERSIONS OF ANY KIND
    Scott:glasses:

  3. #3

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    It is loosing more then a "Little" I mean there is a pretty big difference.

  4. #4
    Legend

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    Default

    There still is a unit in the back so maybe something isnt functioning correct or the place that installed it screwed something up. Relly the only thing is to get it back to who replaced everything right away.
    99 K1500 Suburban LT "THE BEAST"
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  5. #5

    Default

    Quote Originally Posted by DAREDEVIL View Post
    if its really hot out , the rear AC looses a little thru the heat hitting the ruff !!!! but when u say AC blows real cold infront..I WANT THAT ONE ..lol
    I think he meant to type roof. However, I don't think it's merely heat transfer from the roof. I bet the rear system needs to be cleaned/flushed. The orifice is the part that changes the freon from high pressure to low pressure and if it is clogged with gunk, it won't let the a/c get cold enough. This is assuming you've already checked the system and confirmed it isn't a leak or lack of coolant.
    I like you.

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