Results 1 to 10 of 10

Thread: no A/C

  1. 05-27-2010, 02:46 AM #1
    mark21742
    mark21742 is offline
    cutting and welding mark21742's Avatar
    Join Date
    Mar 2008
    Location
    mercersburg pa
    Posts
    6,443

    hugger orange
    2004

    no A/C

    Purged and recharged the a/c in the goat last night and for some reaspn the a/c clutch isn't engaging...if I use a jumper wire to hot the clutch locks up like it supposed to and I get nice cold air.

    Any ideas? Anyone know how to ohm the pressue switch by the driverside headlight?
    Reply With Quote Reply With Quote
  2. 05-27-2010, 06:04 PM #2
    cammed goat
    cammed goat is offline
    11 years of bangin gears cammed goat's Avatar
    Join Date
    Jan 2009
    Location
    North Jersey
    Posts
    11,496

    Phantom Black Metallic
    2004 GTO M6

    Send a message via AIM to cammed goat
    You have a multimeter? I assume you need to switch it to read ohms and have the car switched to "run" to see if you are getting power. You check your relay?
    Reply With Quote Reply With Quote
  3. 05-27-2010, 06:39 PM #3
    MNGTO
    MNGTO is offline
    Junior Member MNGTO's Avatar
    Join Date
    Apr 2008
    Location
    Minneapolis, MN
    Posts
    58

    Black
    2004 GTO

    If you suspect a bad pressure switch you can run a jumper a cross the two terminals on the connector while the engine is running and A/C on to see if the clutch engages. If your A/C worked before you recharged it, are you sure you have the correct amount of refrigerant in the system?
    Reply With Quote Reply With Quote
  4. 05-28-2010, 02:09 AM #4
    mark21742
    mark21742 is offline
    cutting and welding mark21742's Avatar
    Join Date
    Mar 2008
    Location
    mercersburg pa
    Posts
    6,443

    hugger orange
    2004

    I have a multi meter, but not sure how to test the switch because its a 3 wire switch not your normal two wire (on off switch).

    The a/c worked last year, but tried it for the first time the other day since my 408 swap. I have everything hooked up right in the engine compartment and have checked all the fuses and relays.

    I'm stumped here lol
    Reply With Quote Reply With Quote
  5. 05-28-2010, 03:31 AM #5
    qwkgto
    qwkgto is offline
    Senior Member qwkgto's Avatar
    Join Date
    Mar 2008
    Location
    OHIO"S only 9 second GTO
    Posts
    1,464

    Phantom Black Metalic
    2005 GTO

    weird ,tryed mine yesterday it as well would not work,I have not checked anything as of yet,blew cold last year,maybe a control issue,had the heater do the same thing then all at once it started working again... let us know what you find..
    mods: custom built twins, built 408 w/l92 stock GM heads,GM matching intake,drag bags,frame ties,aluminum drive shaft, performabuilt 4l80e,Yank converter,ohios fastest and quickest 04-06 GTO 9.52 at 144mph. 1.50 60ft on stock rear end and shafts/suspension,on drag radials.
    Reply With Quote Reply With Quote
  6. 05-28-2010, 03:42 AM #6
    MNGTO
    MNGTO is offline
    Junior Member MNGTO's Avatar
    Join Date
    Apr 2008
    Location
    Minneapolis, MN
    Posts
    58

    Black
    2004 GTO

    If its three wires one will be power, the other will send the signal to a a/c module, and the third should be a chassis ground. Im not sure what wires are what, but i can check at work today.
    Reply With Quote Reply With Quote
  7. 05-28-2010, 07:28 AM #7
    surfinjoe
    surfinjoe is offline
    Member
    Join Date
    Nov 2005
    Location
    Royal Oak, Michigan
    Age
    52
    Posts
    236

    Black
    2004 GTO A4

    Did you check the pressure of the charge? If you over-charge the system, it can prevent the compressor from running due to tripping the pressure switch. I did this on my 00 SS a few years back when I tought the air was not cold enough. Turns out that black interiors are just fricken HOT!
    Reply With Quote Reply With Quote
  8. 05-28-2010, 10:13 AM #8
    mark21742
    mark21742 is offline
    cutting and welding mark21742's Avatar
    Join Date
    Mar 2008
    Location
    mercersburg pa
    Posts
    6,443

    hugger orange
    2004

    Thanks MNGTO if ypu don't mind!

    Yup joe pressure is right on the money
    Reply With Quote Reply With Quote
  9. 05-29-2010, 01:42 PM #9
    MNGTO
    MNGTO is offline
    Junior Member MNGTO's Avatar
    Join Date
    Apr 2008
    Location
    Minneapolis, MN
    Posts
    58

    Black
    2004 GTO

    Sorry it took so long. The PPL/WHT wire is a 5v ref, GRN/BLK is pressure signal and GRN/ORG Low Ref. I would verify that you have 5v to the sensor. Then check the signal voltage. All of the wires go to the PCM
    Reply With Quote Reply With Quote
  10. 05-29-2010, 03:06 PM #10
    mark21742
    mark21742 is offline
    cutting and welding mark21742's Avatar
    Join Date
    Mar 2008
    Location
    mercersburg pa
    Posts
    6,443

    hugger orange
    2004

    Thank you MNGTO! I'll check it out this weekend
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

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
  •  

Forum Rules