How do I adjust the kickdown linkage? - Ford Muscle Forums : Ford Muscle Cars Tech Forum
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Old 02-12-2008, 04:09 PM   #1 (permalink)
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How do I adjust the kickdown linkage?

I have a 62 Mercury Monterey with a 390 and a Holley carb. I THINK the linkage is out of adjustment, sometimes it will hold 1st gear too long, then hit 2nd and 3rd real fast. If I notice it happening an dI bury the throttle, the car takes off and shifts normal.
Any advice?
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Old 02-12-2008, 04:25 PM   #2 (permalink)
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Re: How do I adjust the kickdown linkage?

If your trans has a vacuum modulator, the kickdown linkage only comes into play at full throttle, to trigger a downshift into 'passing gear'. If there's no vacuum modulator, the linkage controls shift points at part-throttle, too. Either way, go to your local library and find a Motor or Chilton's, etc. manual for the exact procedure. These manuals have very good illustrations and instructions to do this. If adjusting doesn't fix it there may be some valves sticking in the valve body, so you either have to disassemble and clean the valve body or take your chances with an additive.
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Old 02-13-2008, 06:35 PM   #3 (permalink)
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Re: How do I adjust the kickdown linkage?

Wow, I am retarded.
Vacuum modulator? what is that? WHERE is that?
Maybe I should just take it to a transmission shop?
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Old 02-13-2008, 06:43 PM   #4 (permalink)
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Re: How do I adjust the kickdown linkage?

Ha.... I gave up on my kickdown linkage. The extension where my linkage attached to my tranny broke off and I haven't had the time to take it to a tranny shop to see what it takes to fix it. I heard that if I wasn't extremely careful and unscrewed the linkage connection on the tranny it could fall into the pan. I really don't want to have to pull the pan....
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Old 02-14-2008, 07:39 AM   #5 (permalink)
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Re: How do I adjust the kickdown linkage?

If the linkage broke off on the OUTSIDE of the tranny just put the two pieces together and weld them up. Then you should start shifting fine again.

Let us kow what happens.



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Old 02-14-2008, 08:03 AM   #6 (permalink)
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Re: How do I adjust the kickdown linkage?

Problem with the kickdown linkage lever where it goes into the trani........

Looks like you can just take off the little 7/16ths nut at the shiftdown lever, with a wrench. If you do that, you will break the lever inside where you can't see.

Loosening that screw, you want to drop the tranni pan, drop the valve body, then hold the inside of that lever while trying to unscrew that little 7/16ths nut on the outside. Or you will bust the inside lever.

Also, there is an o-ring on that shaft. You want to make sure you use an o-ring when you put it together, or it will forever drip....

You have to take the tranni out to weld the two broken parts together. The shaft only removes from the inside, once all the guts are out of it. Welding it on the outside... if you can, you may melt the o-ring, and will have a messy drip.
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Old 02-14-2008, 09:11 AM   #7 (permalink)
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Re: How do I adjust the kickdown linkage?

Quote:
Originally Posted by VegasJetta View Post
Wow, I am retarded.
Vacuum modulator? what is that? WHERE is that?
Maybe I should just take it to a transmission shop?
The vacuum modulator is located on the side of the tranny... there well be a vacuum line going to it... from the intake manifold..
looks like this.



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Old 02-19-2008, 06:46 PM   #8 (permalink)
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Re: How do I adjust the kickdown linkage?

Quote:
Originally Posted by pedal2themetal45 View Post
The vacuum modulator is located on the side of the tranny... there well be a vacuum line going to it... from the intake manifold..
looks like this.



Tim

Looks like what!? HAHA
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Old 02-19-2008, 06:51 PM   #9 (permalink)
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Re: How do I adjust the kickdown linkage?

lol, just follow the vacuum line from the manifold, but not the big one that goes to the brake booster!!! then you will be really confused
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Old 02-20-2008, 04:04 AM   #10 (permalink)
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Re: How do I adjust the kickdown linkage?

what kind of tranny is it? if it is an AOD, then just be sure to fix it before driving it, because driving it with the kickdown not doing its job will burn up the tranny really fast.
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Old 02-20-2008, 07:12 AM   #11 (permalink)
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Re: How do I adjust the kickdown linkage?

if im not mistaken, you would have a hell of a time putting an AOD behind a 390
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