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Thread: A/C expansion valve and Evaporator question/issue

  1. #1
    Garrett booster
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    A/C expansion valve and Evaporator question/issue

    Hello all. Have a question/problem on an 89 Lebaron. I have all new parts for the a/c including lines, compressor, dryer, condenser, and expansion valve. The evap core is original to my knowledge. But this is where it gets fun. The flange on firewall has recessed ports what look to accept “male”
    ends if you will from the expansion valve. Trouble is my expansion valve has the same recessed ports that need a male end for them. I have purchased several expansion valves including a NOS correct part number (supposed) and still no dice. When I look at a replacement a/c core it seems to have the “male” ends I would think are needed. Hopefully I can get a picture to work. Otherwise I hope this makes sense and wonder if anyone else out there has ideas??!! Thanks!




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    Ugh I can’t get photos to work and don’t seem to have the brain power to use them from the thread tool😵

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  2. #2
    Garrett booster
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    Re: A/C expansion valve and Evaporator question/issue

    Maybe photos will work now? First is the car as it is now. Second shows the “new” evaporator core I can buy. As a side note I have found some vendors selling evaporator cores with the ports just like current on my car. What am I missing??


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  3. #3
    Garrett booster
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    Re: A/C expansion valve and Evaporator question/issue




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  4. #4
    Super Moderator Turbo Mopar Staff 135sohc's Avatar
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    Re: A/C expansion valve and Evaporator question/issue

    That evaporator core does not look original, OE would have been a brass/copper unit. That appears to be an aluminum unit based on the flange your picture is showing.

    The rockauto unit is correct in the flange configuration.
    1994 Shadow Sedan. 2.2 N/A, A568 396,000 miles. "the science experiment"
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  5. #5
    Supporting Member II Turbo Mopar Contributor ajakeski's Avatar
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    Re: A/C expansion valve and Evaporator question/issue

    There should be round nylon inserts with the new expansion valve. The inserts press into those recesses and help hold the gasket in place.

  6. #6
    Boost, it's what's for dinner... Turbo Mopar Staff Aries_Turbo's Avatar
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    Re: A/C expansion valve and Evaporator question/issue

    Quote Originally Posted by 135sohc View Post
    That evaporator core does not look original, OE would have been a brass/copper unit. That appears to be an aluminum unit based on the flange your picture is showing.

    The rockauto unit is correct in the flange configuration.
    all of my oem evaporator cores in my k cars have been aluminum. oem heater cores are copper brass.

    and they have the female style hole just like that. the expansion valve that i got came with the nylon inserts to align the gasket and the valve just like that.

    Brian

    Quote Originally Posted by turbovanman
    This one is easy, I have myself to blame, I rush things, don't pay attention to gauges when I should, change to much stuff at once then expect miracles, the list is endless.

  7. #7
    Super Moderator Turbo Mopar Staff 135sohc's Avatar
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    Re: A/C expansion valve and Evaporator question/issue

    Wondered what those plastic sleeve inserts were for, I always tossed them since my evap core has the pipe stubs sticking out of the block. The evaporator in the Shadow was a chrysler warranty replacement when it was just over a year old, copper/brass construction.
    1994 Shadow Sedan. 2.2 N/A, A568 396,000 miles. "the science experiment"
    1987 Shelby CSX #418. Long term rebuild and restore ?

  8. #8
    Boost, it's what's for dinner... Turbo Mopar Staff Aries_Turbo's Avatar
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    Re: A/C expansion valve and Evaporator question/issue

    interesting. Ive only seen aluminum on alot of cars. all were factory afaik.

    Brian

    Quote Originally Posted by turbovanman
    This one is easy, I have myself to blame, I rush things, don't pay attention to gauges when I should, change to much stuff at once then expect miracles, the list is endless.

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