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  • Crizila
    started a topic speed control diaphram

    speed control diaphram

    Looking for a new ( or good used ) speed control diaphragm for the cruise control on my wife's 79 300.

  • Crizila
    replied
    Just as an update, I was able to fix the hole in my diaphragm with Permatex ultra black RTV silicone gasket maker. Patched the hole from both sides. Don't know how long it will last, but it is holding for now.

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  • Crizila
    replied
    Thanks for everyone's help on this. No luck so far. Went through all the Chrysler manual trouble shooting checks and everything passes except the vacuum check, so pretty sure the diaphragm is bad. I have had the unit apart and all looks physically good - cables and linkage adjustments too.

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  • hemisatellite
    replied
    Originally posted by Crizila
    Looking for a new ( or good used ) speed control diaphragm for the cruise control on my wife's 79 300.
    I have my mopar fanatic buddy searching thru his stuff. He says he should have a few of them laying around. he's got boatloads of older chargers, challengers, etc.. PM me about them and we'll figure something out. Curt

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  • Magnumguy
    replied
    While the subject's up, does anyone rebuild these things?

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  • Magnumguy
    replied
    If you do collectable Auto Supply, open your wallet wide. They have those wiper arms w/bushings, almost $400

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  • Magnumguy
    replied
    What's good about that is that those appear to be the same unit from mid 70's up to the 90's, and maybe beyond.

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  • BK
    replied
    I can confirm that the 81 Imperial and 78 Magnum look identical

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  • R-body_mopar
    replied
    Both of these dealers list that part number on Partsvoice:


    http://www.arizonaparts.com/

    http://collectorsautosupply.com/

    Leave a comment:


  • R-body_mopar
    replied
    My 1980 parts book gives a number of 3769294 for JET bodies; should be the same for earlier B-bodies. Do a google search or try partsvoice.com

    This should be a pretty common item, as it was a popular over the counter dealer installed item also. Good luck!

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  • Crizila
    replied
    Thanks BK, I'll give it a shot. Did E-bay already - and a few yards in my area to no avail.

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  • BK
    replied
    I remember having a problem finding one about ten years back. Finally scored on eBay.

    id place an ad in the wanted section of the Free Classifieds and at www.cash-or-barter.com

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