Vacuum Issue

Discussion in 'General Maverick/Comet' started by KYF350, Mar 4, 2011.

  1. KYF350

    KYF350 Member

    Joined:
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    Location:
    Paducah, KY
    Vehicle:
    1972 Ford Maverick
    Hi all,

    The Maverick has been running good for some days now, (I have actually got to drive it the last two weeks without actually working on it) but, I have another problem, I think I know what is causing it, but, I can't remember how to fix it.

    Here goes:

    When the HVAC controls are on any position but "defrost" the blend air door goes to the defrost position when I step on the accelerator to pass, etc. It generally occurs on wide open throttle and when I let off the accelerator the blend air door goes back to its intended position. I know that there is a dashpot, one way air valve, etc. that isn't holding, possibly. Any ideas? Thanks, Craig.
     

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