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Thread: Idle not kicking down

  1. #1
    Join Date
    May 2013
    Location
    East Hartford, CT
    Posts
    2

    Default Idle not kicking down

    Hello,

    I have a 650 DP installed on my 69 Camaro which was purchased brand new. The intake it's sitting on is new as well.

    The issue is that the idle doesn't seem to want to kick down when coming to a stop. If I stab the throttle rick quick it will drop down to 750 RPM, but otherwise it hovers around 1000 RPM.

    Now I've disconnected the throttle linkage and was able to produce the same result. Currently I have a dual spring set-up on it.

    Some help on this would be great as my friend is also experiencing the same issue.

    Thanks for the help.

  2. #2
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    22,893

    Default

    Quote Originally Posted by 69importkilla View Post
    Now I've disconnected the throttle linkage and was able to produce the same result. Currently I have a dual spring set-up on it.
    Remove the return springs and the accelerator linkage again. Slowly actuate & release the carburetor's throttle lever and pay close attention to the throttle linkage & the four throttle valves. What's causing the bind?
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  3. #3
    Join Date
    May 2013
    Location
    East Hartford, CT
    Posts
    2

    Default

    Thanks for taking the time to help, I'm from East Hartford.

    I have done what you mentioned and couldn't find a bind.
    It's funny though, when the car is idling high, I can turn down the idle screw and the idle will go down.
    I was starting to think a machining issue within the base plate...but I cannot prove it.

  4. #4
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    22,893

    Default

    Quote Originally Posted by 69importkilla View Post
    ...when the car is idling high, I can turn down the idle screw and the idle will go down.
    Well that's strange, because that means the throttle shaft was contacting it (as it should at idle).
    Does this happen with the secondary shaft disconnected? Does this happen with the engine off?
    This reminds me of this thread: http://forums.holley.com/showthread....y-when-Running!
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

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