problem with the AC

  • #1

    problem with the AC

    hi guys, my problem is that when i turn on the AC, the air only comes from the upper vents that are in the dashboard as it was selected to defrost the windshield. i took out the climate control unit (not digital) to see its condition, i even opened, but seems its ok; the fuse it's ok too, is there any relay for the AC?
    thanks for any info…
  • #2
    They aren't electric doors, they run on vacuum, check for leaks
  • #3
    ^^

    Had the exact same problem.
    Took a bit of following vacuum diagrams and what not but I got it to function again.
  • #4
    I had a retaining clip come off my mix door…
  • #5
    thanks guys =D.... i'm trying to find out how my vacuum hoses are set....recently i took it to a mechanic and messed up the order of the hoses…is it necessary to have the heater control valve to solve this, my fell off because of rust in it…

    thanks !!
  • #6
    also, if there is no heater control valve could it cause overheating problems with the car?

    thanks
  • #7
    I having the same problem, Cold AC only working on the Dashboard. Cant figure out why, vacum lines seems fine and i even replace most of them. Still trying to figure it out, if anyone has a diagram on this please let us know
  • #8
    these links below might help in locating and tracing the vacuum lines.


    http://thumper300zx.com/

    http://300zx.tombeauchamp.com/service.shtml#052204

    http://xenonzcar.com/z31/hotairfromac.html
    Restore it, Don't crush it. They don't make them like this anymore.

    Scott
    85 Turbo, original owner, restored
    93 NA Babied


  • #9
    IMG_20151022_093408953_HDR.jpg look what I foundIMG_20151022_093408953_HDR.jpg with the help diagram I'm can location all the lines, thank you so much!