Results 1 to 13 of 13

Thread: a/c check valve

  1. #1

    Array
    Status
    Offline
    Join Date
    12-04-2012
    Posts
    496
    Location

    New Bern, NC
    Vehicle

    1994 Mitsubishi Mighty Max
    Engine

    4G64

    a/c check valve

    So my compressor check valve went out yesterday. Pulled vacuum on the system today and no good. I swear I've seen this valve on newer mitsubishi compressors. The diaphragm inside ruptured. I'm wondering if anyone has sourced these valves from somewhere else? Mopar can't look up a 91 truck a/c system because it was in an accessory manual hence it's not in their files. Also i think the valves were different on the R134 trucks compressors so I can't look it up through mitsubishi's parts catalog either.

  2. #2



    Array
    Status
    Offline
    Join Date
    03-16-2011
    Posts
    3,614
    Location

    Sacramento, CA
    Vehicle

    1979 Dodge D-50
    Engine

    Chevy V6
    Try and ask these guys. http://www.polarbear-air.com/

    Do you have a picture of what you are looking for?
    Members come and members go, But the board keeps track of them.
    Check out the Fear Monger by
    clicking HERE.

    The MightyRam50 site is sponsored in part by On Site Concrete Inc.

  3. #3

    Array
    Status
    Offline
    Join Date
    12-04-2012
    Posts
    496
    Location

    New Bern, NC
    Vehicle

    1994 Mitsubishi Mighty Max
    Engine

    4G64



  4. #4



    Array
    Status
    Offline
    Join Date
    03-16-2011
    Posts
    3,614
    Location

    Sacramento, CA
    Vehicle

    1979 Dodge D-50
    Engine

    Chevy V6
    Thats the emergency pop off. It blows up when the pressure is to high. That keeps from killing people by keeping the line or evap from exploding. Somthing is plugged in the system.
    Members come and members go, But the board keeps track of them.
    Check out the Fear Monger by
    clicking HERE.

    The MightyRam50 site is sponsored in part by On Site Concrete Inc.

  5. #5

    Array
    Status
    Offline
    Join Date
    12-04-2012
    Posts
    496
    Location

    New Bern, NC
    Vehicle

    1994 Mitsubishi Mighty Max
    Engine

    4G64
    I should have known better. The truck idling in the yard so long is what did it. Remember i still have no shroud and cant find one. Ive got poor airflow. Ive considered gettin a dual fan from a nissan and running one when the engine is running and tie the other to the a/c switch. But i dont think ur wrong either. After recharging the system the high will be around 175-200 at 85 degrees and high humidity. Which is within spec. However the high side needle flutters so i think the txv is clogged. Pennyman mentioned the differences of a r12 vs a r134 txv. I wonder if theyre interchangable.

  6. #6



    Array
    Status
    Offline
    Join Date
    03-16-2011
    Posts
    3,614
    Location

    Sacramento, CA
    Vehicle

    1979 Dodge D-50
    Engine

    Chevy V6
    You must use the correct TXV for the gas you are using. The molecules s are different sizes.
    And you better get a fan shroud. One from a Montero is your best bet. There easier to find.
    Members come and members go, But the board keeps track of them.
    Check out the Fear Monger by
    clicking HERE.

    The MightyRam50 site is sponsored in part by On Site Concrete Inc.

  7. #7

    Array
    Status
    Offline
    Join Date
    12-04-2012
    Posts
    496
    Location

    New Bern, NC
    Vehicle

    1994 Mitsubishi Mighty Max
    Engine

    4G64
    These trucks are easier to find in my area than montero's surprisingly. Last montero I found had everything exept the fan shroud and front calipers.. lol I really don't wana pull that box back out again.. Guess I don't have much of a choice.

  8. #8



    Array
    Status
    Offline
    Join Date
    03-20-2011
    Posts
    4,115
    Location

    Pittsburgh, PA
    Vehicle

    1980 Dodge D-50
    Engine

    G54B
    the expansion valves are interchangeable, at least on the 1st gen, but the 2nd gen should be the same, since they are all aftermarket kits sourced by Chrysler or Mitsu to meet minimum US content. At the upullit they just got a 2nd gen montero with a blown out front ball joint, intact engine bay, and a disk brake rear. Don't know when I will have time to get back there, but it may be there for a while.
    Pennyman1
    The best Dodge that Dodge never made
    Living the D-50 lifestyle since 1980

  9. #9

    Array
    Status
    Offline
    Join Date
    12-04-2012
    Posts
    496
    Location

    New Bern, NC
    Vehicle

    1994 Mitsubishi Mighty Max
    Engine

    4G64
    I contacted polarbear. Waiting on response.
    So it had a fan shroud? I know I can't use the brakes since the swap won't work on 2wd and I'm considering going 2wd with my diesel to see what kind of MPG it can get and since I'm not keeping my 2nd gen too much longer so I need an economical truck not a off road beater truck. It's driving me crazy. I put a new exhaust manifold on today and the O2 sensor seized so I need a new $95 o2 sensor. Also the back head stud broke trying to tighten it. I barely got it snug and it snapped. Luckily there was a few threads to tighten 2 nuts on it (since I didn't have my stud extractor set) so I had to pull it out and luckily I had a bolt with the same threads but I had to put a nut behind it cuz it was too long. Looks tacky but it works.

  10. #10



    Array
    Status
    Offline
    Join Date
    03-16-2011
    Posts
    3,614
    Location

    Sacramento, CA
    Vehicle

    1979 Dodge D-50
    Engine

    Chevy V6
    You should call them. I don't trust email to them. It's a small busy shop so a call is the best. If worst come to worst, I can go by there and pick it up and ship it to you.
    Members come and members go, But the board keeps track of them.
    Check out the Fear Monger by
    clicking HERE.

    The MightyRam50 site is sponsored in part by On Site Concrete Inc.

  11. #11

    Array
    Status
    Offline
    Join Date
    12-04-2012
    Posts
    496
    Location

    New Bern, NC
    Vehicle

    1994 Mitsubishi Mighty Max
    Engine

    4G64
    If you have the chance let me know how much that would be. that would be easier for me since my phone's speaker is out right now. No calls for me.

  12. #12



    Array
    Status
    Offline
    Join Date
    03-16-2011
    Posts
    3,614
    Location

    Sacramento, CA
    Vehicle

    1979 Dodge D-50
    Engine

    Chevy V6
    Talked with Polar Bear. 916-923-2323. They would need to have it in there hands to match it up or find one that will work. You should just sent it to them. There good people and can take care of you.
    Members come and members go, But the board keeps track of them.
    Check out the Fear Monger by
    clicking HERE.

    The MightyRam50 site is sponsored in part by On Site Concrete Inc.

  13. #13

    Array
    Status
    Offline
    Join Date
    12-04-2012
    Posts
    496
    Location

    New Bern, NC
    Vehicle

    1994 Mitsubishi Mighty Max
    Engine

    4G64
    I got an email from him today. I'll see what he says. He said the same thing I did, that I have poor airflow across the condensor that most likely blew that valve since it's rated at 400psi

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •