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t-royR
Samba Member
Joined: April 19, 2012
Posts: 470
Location: Minnesota
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 Posted: Thu Apr 27, 2023 2:11 pm Post subject: kickdown switch missing |
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There is no kickdown switch on my 69 automatic FI fasty. Reading suggests there should be one.
I took it for a drive a bit ago and while going up a good hill, I punched it, and it downshifted. As I understand it, that is the affect a kickdown switch is to have. With my car missing one, does it make sense it would kickdown like this? What am I missing?
T-roy
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75 Super
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71 Ghia coupe auto-stick
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t-royR
Samba Member
Joined: April 19, 2012
Posts: 470
Location: Minnesota
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| Posted: Thu Apr 27, 2023 2:11 pm Post subject: Re: kickdown switch missing |
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It won't always kickdown. Usually, when I decide to try it, I kick it and it just stays in the 3rd gear I'm in.
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71 Ghia coupe auto-stick
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KTPhil 
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Joined: April 06, 2006
Posts: 35947
Location: Conejo Valley, CA
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| Posted: Thu Apr 27, 2023 10:28 pm Post subject: Re: kickdown switch missing |
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Yours is shifting down based on load (sensed manifold vacuum). This is usually adequate.
However, there are driving conditions where you want it to downshift, but this vacuum effect won't do it, so you use the kickdown switch to force it.
All else fails, use the selector lever.
They come up in the classifieds occasionally, usually with the whole IAD assembly.
With this feature you can exercise a great deal of control of both up and down shifts with your right foot:
- Downshifts can of course be forced by mashing the pedal.
- Upshifts can be forced by letting off the gas for a moment, then pressing it again-- but not past the kickdown position.
When the engine is running well and with the kickdown switch, even fun canyon roads can be driven with an automatic, up-and down-shifting almost as well as with a stick, all by modulating the throttle. Very satisfying!
Last edited by KTPhil on Fri Apr 28, 2023 3:03 pm; edited 1 time in total |
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raygreenwood
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Joined: November 24, 2008
Posts: 23177
Location: Oklahoma City
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| Posted: Fri Apr 28, 2023 6:53 am Post subject: Re: kickdown switch missing |
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It's my understanding and experience that if it was fuel injected the switch should be under the gas pedal. The carbed engines had one on the carb linkage.
Ray |
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KTPhil
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Joined: April 06, 2006
Posts: 35947
Location: Conejo Valley, CA
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| Posted: Fri Apr 28, 2023 8:14 am Post subject: Re: kickdown switch missing |
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| raygreenwood wrote: |
It's my understanding and experience that if it was fuel injected the switch should be under the gas pedal. The carbed engines had one on the carb linkage.
Ray |
I've never seen a Type 3 with a pedal kickdown. Some may have invented one when they couldn't find an OG style switch. All FI Type 3s I've seen mounted it on the IAD assembly (auto and sticks). |
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t-royR
Samba Member
Joined: April 19, 2012
Posts: 470
Location: Minnesota
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| Posted: Fri Apr 28, 2023 10:52 am Post subject: Re: kickdown switch missing |
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Thanks all
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Bobnotch
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Joined: July 06, 2003
Posts: 23407
Location: Kimball, Mi
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| Posted: Fri Apr 28, 2023 11:33 am Post subject: Re: kickdown switch missing |
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| KTPhil wrote: |
| raygreenwood wrote: |
It's my understanding and experience that if it was fuel injected the switch should be under the gas pedal. The carbed engines had one on the carb linkage.
Ray |
I've never seen a Type 3 with a pedal kickdown. Some may have invented one when they couldn't find an OG style switch. All FI Type 3s I've seen mounted it on the IAD assembly (auto and sticks). |
Yup, same here. The switch is an arm style switch, held onto a bracket with 2 screws. Same switch used in both models, just how it's set up is different. There should be a spring loaded part on the throttle body arm that allows it to softly come into play.
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KTPhil
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Joined: April 06, 2006
Posts: 35947
Location: Conejo Valley, CA
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| Posted: Fri Apr 28, 2023 12:17 pm Post subject: Re: kickdown switch missing |
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Yes, the idea is that at some point the throttle flap is wide open, but the other part of the pivot allows further movement to close the switch. That further movement is resisted by the spring. So you feel "full throttle" and can stop there... or press further to "full pedal" and trigger the downshift.
Carb linkage:
FI linkage:
Last edited by KTPhil on Fri Apr 28, 2023 3:02 pm; edited 3 times in total |
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raygreenwood
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Joined: November 24, 2008
Posts: 23177
Location: Oklahoma City
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| Posted: Fri Apr 28, 2023 1:53 pm Post subject: Re: kickdown switch missing |
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| Bobnotch wrote: |
| KTPhil wrote: |
| raygreenwood wrote: |
It's my understanding and experience that if it was fuel injected the switch should be under the gas pedal. The carbed engines had one on the carb linkage.
Ray |
I've never seen a Type 3 with a pedal kickdown. Some may have invented one when they couldn't find an OG style switch. All FI Type 3s I've seen mounted it on the IAD assembly (auto and sticks). |
Yup, same here. The switch is an arm style switch, held onto a bracket with 2 screws. Same switch used in both models, just how it's set up is different. There should be a spring loaded part on the throttle body arm that allows it to softly come into play. |
Yep my bad....mixing up my type 3's and 4's. When KTPhil posted the sketch of the throttle switch the memory came back. Its been forever since I worked on an automatic type 3.
I also tend to forget that the type 3 pedal is hinged at the bottom instead of the top so the kick down switch bracket would not fit under the pedal.
But....it would be dead easy to install a micro switch on the type 3 pedal. Ray |
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KTPhil
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Joined: April 06, 2006
Posts: 35947
Location: Conejo Valley, CA
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| Posted: Fri Apr 28, 2023 3:05 pm Post subject: Re: kickdown switch missing |
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Micro switches are easy to find:
https://www.google.com/search?q=micro+switch&t...LMP7-G5iAE
The tough part is adapting a given switch's mounting holes to the VW throttle assembly. It can be done if you are clever and patient.
These same switches could be adapted to a pedal actuation, again requiring cleverness and patience. |
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