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A/C help

This is a discussion on A/C help within the General Help forums, part of the LSx Technical Help Section category; does anyone know where the Blower Motor Resistor is? someone told me that could be the problem....???...

  1. #41
    Veteran Blackbird WS6's Avatar
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    does anyone know where the Blower Motor Resistor is?

    someone told me that could be the problem....???
    Last edited by Blackbird WS6; 10-16-2010 at 09:10 PM.

  2. #42
    Smiles for 9.5 Years cammed goat's Avatar
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    I have no clue.

  3. #43
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    Quote Originally Posted by cammed goat View Post
    I have no clue.

  4. #44
    Smiles for 9.5 Years cammed goat's Avatar
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    It almost sounds like something isn't connected, or connected backwards.

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    Quote Originally Posted by cammed goat View Post
    It almost sounds like something isn't connected, or connected backwards.
    yea but then it wouldnt work right? it does work the right way WHEN it wants so idk thats whats fucking with me

  6. #46
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    Check that resistor and let us know what you find. This is odd.

  7. #47
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    Quote Originally Posted by cammed goat View Post
    Check that resistor and let us know what you find. This is odd.
    true dat, will do...just have to fine where its located

  8. #48
    Moderator Cutlass's Avatar
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    It wouldn't be the blower motor resistor. That only controls the fan blower speed.

    here is an ok pic of the HVAC control vacuum line near the PCM. Ignore the "B"


    On a stock intake manifold, the HVAC vacuum line hooks up to the small outlet under the MAP sensor connector in this picture


    I should also add, that I think the vacuum line runs from the manifold, tee's off down to a reserve tank that sits inside the RF fender below the headlamp and then to the a/c controls. If there is a leak anywhere in those areas, you'll have problems.
    Last edited by Cutlass; 10-17-2010 at 06:51 PM.

  9. #49
    Smiles for 9.5 Years cammed goat's Avatar
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    I was hoping you would post a diagram Cutlass. I cannot remember the design of the F-Body as well as I used to.

  10. #50
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    Quote Originally Posted by Cutlass View Post
    It wouldn't be the blower motor resistor. That only controls the fan blower speed.

    here is an ok pic of the HVAC control vacuum line near the PCM. Ignore the "B"
    Click for full size

    On a stock intake manifold, the HVAC vacuum line hooks up to the small outlet under the MAP sensor connector in this picture
    Click for full size

    I should also add, that I think the vacuum line runs from the manifold, tee's off down to a reserve tank that sits inside the RF fender below the headlamp and then to the a/c controls. If there is a leak anywhere in those areas, you'll have problems.
    this is what i didnt want to hear looks like im going to have to rip every god dam thing apart to fine this problem.....is there anyway to check these lines?

    what pisses me off is it works fine for a sec then if i touch something it stops working and starts blowing air out of all the other vents but the main ones

    thanks for info

  11. #51
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    Click for full size
    If you can find this tee/check valve in this picture, you can unhook the line that goes to the intake and with the engine running, check for vacuum at the line. that should prove whether its hooked up the the intake or not.
    From there, you would next check the line to the vacuum reservoir and the reservoir itself.

  12. #52
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    Quote Originally Posted by Cutlass View Post
    Click for full size
    If you can find this tee/check valve in this picture, you can unhook the line that goes to the intake and with the engine running, check for vacuum at the line. that should prove whether its hooked up the the intake or not.
    From there, you would next check the line to the vacuum reservoir and the reservoir itself.
    i have checked that valve and toke off and couldnt hear or feel anything

    when the vents where working i toke the top line off and the vents stopped working and the rest of them started to blow air but the main ones...if im not mistaken i did the same thing with the line on the side and it did the same thing BUT when i would put the line back on it wouldnt make the vents work again, they work when ever they want out of 2hrs of fucking with this shit the other night they worked maybe 2 or 3tims and rest of the time all the over vents would blow air (doesnt matter the setting) they all would blow but the main ones

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    Cutlass, Is'nt that a oneway valve? If the diaphram is bad could'nt that effect the controlls?.. Or am I in left field..?
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    Moderator Cutlass's Avatar
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    Quote Originally Posted by Smittro View Post
    Cutlass, Is'nt that a oneway valve? If the diaphram is bad could'nt that effect the controlls?
    Yes and yes

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    i didnt go through this whole thread but look on the passenger side of the intake manifold, the small vaccum hose leads to a small 3 way check valve. Most likely its bad, if it is that its about a 4 dollar fix

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    just noticed the valve was mentioned

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    Quote Originally Posted by tatertot91 View Post
    just noticed the valve was mentioned
    yep

    NEXT!!!!!!!!!!!!

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    Quote Originally Posted by Cutlass View Post
    Yes and yes
    Okay thanx Cutlass! I'm not losing my mind then.. I had an 89 Dodge POS spirit when I was a kid.. Must have had 50 of those stupid valves the Spirit 2.5 turbo was worse.. I don't know how many an LSx has from the factory but they can be a PITA to track down.. Whatever happened to the good old days of vaccume bowls? They were easier to find and fix..imho..
    So glad the drive by wire 3800 (f-body) only has 3 vacc lines under the hood..
    I can understand your dilema Dom the Fla. humidity is crazy.. Without AC. I'd rather not drive down there.. Open window = useless when the humidity is 400% lol..

    Good luck Dom.
    Last edited by Smittro; 10-18-2010 at 05:01 AM.

  19. #59
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    Quote Originally Posted by Smittro View Post

    I can understand your dilema Dom the Fla. humidity is crazy.. Without AC. I'd rather not drive down there.. Open window = useless when the humidity is 400% lol..

    Good luck Dom.
    hahahaha ah yep that be my problem hahaha.....thanks v6 doc aka steve aka mofo

    will be looking more into it tonight see WTF i can get done but i know i will not fine nothing wrong b/c it does work right one out of 1000times so that means something just dont know what lol

  20. #60
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    Quote Originally Posted by Cutlass View Post

    Click for full size
    ok i think i may have found a problem....in this pic...that bottom line (where the "B" is) where does that go hooked up to?

    it seen like its going into the back side of my valve cover kinda like its pinched between the cover and the head NOW i dont think thats right lol so something is wrong

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