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Thread: Throttle body

  1. #1
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    Default Throttle body

    I'm still fighting my BCDD valve problem with the notorious high idle when downshifting. I've read a vew threads about going to a larger throttle body and eliminating the BCDD altogether. Has anyone done this and does it work or what else can I do to solve my idling problem on my '77 280. Any help is appreciated.

  2. #2
    Former frequent poster sblake01's Avatar
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    Default

    Was your car originally a California car? If so, the problem you describe could be caused by a bad altitude switch.
    2004 Ford Ranger EDGE Supercab
    (@Moonpup: This one really is an EDGE!)
    2005 Pontaic GTO
    2010 Mercedes Benz C300 AMG Sportline (Wife's car)
    2014 Kia Rio LX (Wife's daily driver)
    Certified HVAC/MVAC Technician

  3. #3
    Registered User deadflo's Avatar
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    Default

    I know when I put the 60 MM throttle body on my 280Zx , I pulled the BCDD off the old TB and wondered what the hell to do with it. I finally just left it under the hood still hooked up but unattached to the TB. I forgot it was still there till I saw this thread. its been there about 12 years now!
    I think you can just disconnect it without a problem.

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