Electric Choke Issue?

Discussion in 'Troubleshooting & Diagnosis' started by jondebo, Feb 23, 2021.

  1. jondebo

    jondebo Veteran Member

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    I have a Holley carb with electric choke. I have a manual transmission. When the engine is fully warmed up, the idle when shifting from gear to neutral will stay too high. So, let's say I'm shifting from 3rd to 4th, the rpms will stay pegged high in between the shift. Likewise downshifting from say 2nd to idle while coming to a stop, the rpms will stay high at like 2500 rpm stopped in neutral. I have to hit the gas to get it to come down to idle. I've had two shops look at it and this still happens. I had someone suggest I check the volts at the choke to make sure I'm getting enough power to it. The two shops say it's adjusted right and nothing is binding against the fast idle screw. Any ideas? This makes the car a chore to drive so looking for help. 16141143991262941845211873204389.jpg 16141144699073841906659615306254.jpg 16141145219772560295454115328007.jpg
     
  2. COPO

    COPO Veteran Member Lifetime Gold Member

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    You need an adjustment or it’s sticking somewhere.
     
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  3. Gary S

    Gary S Administrator Lifetime Gold Member

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    Is the choke plate open when the engine is warmed up? If yes, then there is no problem with the choke. The problem then is the fast idle misadjusted or sticking. Look there.
     
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  4. jondebo

    jondebo Veteran Member

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    I took the car for a spin today and couldn't get the problem to crop up. I was driving it without the air cleaner on today so I could pull over and look at the plate. I wonder if the air cleaner lower is binding on the choke plate linkage? I remember having problems getting the lower to fit on the carb so maybe it's getting hung up there?
     
  5. COPO

    COPO Veteran Member Lifetime Gold Member

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    Put the breather on and use an inspection camera and check for binding.
     
  6. 80sz

    80sz Veteran Member

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    Look at under side of air cleaner lid to see if it’s hitting. You will see some scratches
     
  7. serpent710

    serpent710 Veteran Member

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    I had to cut out part of my lower lid to get it to sit without hitting the choke.
     
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  8. lapedr

    lapedr Veteran Member Gold Member

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    I had this same problem. The choke linkage next to the choke plate was binding. I bought a Holley carb spacer to go between the carb and air cleaner base, and this fixed it, so I would look there.
     
  9. carhead22000

    carhead22000 oldblue

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    yeah mine was rubbing to..was using the low profile air breather.had to round it out where linkage was.
     
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  10. G72Zed

    G72Zed Veteran Member

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    Perhaps remove the complete choke housing and wire the choke plate in the open position. That way if it happens again, perhaps you should look into the centrifugal mechanism and weights and the vacuum advance plate. I've seen this happen on the cheap "Chinese" HEI's and the Street Fire stuff on numerous occasions.

    I'm not much help in the Holley choke trouble shooting dept...all my customers make me remove the chokes & plates anyway. I even have a customer with a twin Holley carb'd Tunnel Ram Rat Rod and likes drifting in the snow, no chokes LOL.
     

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