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air conditioning light is flashing

Discussion in 'Technical Chat' started by se2schul, Jun 21, 2012.

  1. Jun 21, 2012 at 2:17 PM
    #1
    se2schul

    se2schul [OP] Member

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    My AC stopped working, and the light is blinking.

    I'd like to try to diagnose the problem and if it's something simple, fix it myself. My wife's AC compressor died last week in her civic, and I really, really hope that I'm not in a similar situation. I'm trying to minimize the repair bills this month.

    Thanks!
     
  2. Jun 22, 2012 at 10:41 AM
    #2
    iroh

    iroh Well-Known Member

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    A light flashing is usually indicative of that crappy Delphi compressor pooping out. It's our reward for Toyota using GM's suppliers (kinda like our hvac blower motor).

    When it's just a low pressure situation the light stays solid but the compressor clutch doesn't turn on.
     
  3. Jun 22, 2012 at 10:43 AM
    #3
    se2schul

    se2schul [OP] Member

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    Thanks for the reply.
    How can I confirm that it's a compressor problem before taking it to the mechanic?
     
  4. Jun 22, 2012 at 10:53 AM
    #4
    BCTSR5

    BCTSR5 Wizard with a wrench

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    Check the a/c relay. They cost a pretty penny though.
     
  5. Jul 13, 2012 at 12:39 PM
    #5
    arlypoo

    arlypoo Well-Known Member

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    AC relay 122 dollars canadian from Toyota. It's most likely the clutch, 550 dollars canadian from toyota...

    Mine would engage then quickly disengage, activating the flashing light.

    Watch the compressor and have someone push the AC button, it will be obvious if it is failing.
     
  6. Aug 15, 2012 at 10:30 PM
    #6
    papis taco

    papis taco Member

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    Mine is doing the same thing. If you press the button twice (off and back on) does it start working again? How about idling? Mine will work all day as long as its idling.
     
  7. Aug 16, 2012 at 4:29 AM
    #7
    se2schul

    se2schul [OP] Member

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    Mine is never working, idling or not.
     
  8. Aug 16, 2012 at 10:33 AM
    #8
    slo13zx3

    slo13zx3 Well-Known Member

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    head pressure or sensor or low charge is my guess if it pops on and off
     
  9. Aug 21, 2012 at 1:53 PM
    #9
    BamaToy1997

    BamaToy1997 Wheel Bearing Master

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    before guessing on this part or that part, get a manifold gauge set or rent one from the local parts suppliers. (many of them rent specialty tools) You may simply have a low charge due to a leak. Find the problem first, THEN replace parts.
     
  10. Aug 22, 2012 at 4:18 AM
    #10
    papis taco

    papis taco Member

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    I've done that. It's fully charged. No leaks. So I don't know... And NO CODES!!
     
  11. Aug 22, 2012 at 5:38 AM
    #11
    BamaToy1997

    BamaToy1997 Wheel Bearing Master

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    If you dont mind me asking, how did you verify it is fully charged? Do you remember your static pressures? Active pressures?


    On a side note, post 1000 for me on this one! lol.
     
  12. Aug 23, 2012 at 5:36 PM
    #12
    papis taco

    papis taco Member

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    No. I don't know the pressures. I had it checked at a shop. And to be sure, they evacuated it and then refilled it and again checked for leaks. That's when they decided it was the evaporator and expansion valve (both of which were replaced last year). And that's why I want a second/third opinion.
     

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