Cruise O'Matic Problems

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Kevhen1996
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Re: Cruise O'Matic Problems

Post by Kevhen1996 » Wed Sep 11, 2019 4:24 pm

RedBird,

I thought it was kickdown too. I have the rod to the accelerator linkage adjusted according to the manual (1.25 inches from contact if I remember correctly). The arm on the transmission also appears to be in the right spot (pointing upward, not to the ground). The car didnt have the accelerator linked to the kickdown when I bought it. Could the presence of the link be what is throwing it off?

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RedBird64
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Location: Bothell Wa.

Re: Cruise O'Matic Problems

Post by RedBird64 » Thu Sep 12, 2019 11:26 am

You might try disconnecting the kick-down part of the linkage or just backing its adjustment off and then go for a test drive. At least that will tell you you're on the right track. Then you can make further adjustments.

Scott
1964 Coupe Wimbledon white/Rangoon Red w/black int. Owned for 42 years. It was my folks car before that (second owners). VTCI # 12013.

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Jim Wulf
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Re: Cruise O'Matic Problems

Post by Jim Wulf » Thu Sep 12, 2019 8:45 pm

I'm betting that most of the posters who are having trouble with the car not responding under acceleration are missing the bell housing mounted throttle stop bracket. It is always removed during an engine or transmission rebuild and is often not reinstalled by an inattentive rebuilder because they have no idea what it is or when it came from. This has been discussed ad nauseum in past threads.
http://www.vintagethunderbirdclub.net/p ... php?t=6720
Jim W, VTCI 1961-1963 Technical Editor
62 SR Red/Black
63 CV Black/Red
67 MGB Roadster
38 MG TA Tickford Drophead Coupe
Past Birds:
63 MSR Red/Pearl Beige
66 CV Red/Red
63 CV Patrician Green/Pearl Beige
61 HT White/Pearl Beige
63 HT Caspian Blue/Blue

Kevhen1996
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Joined: Mon Sep 09, 2019 3:45 pm

Re: Cruise O'Matic Problems

Post by Kevhen1996 » Fri Sep 13, 2019 2:29 pm

I tried loosening the kickdown rod adjustment to the end of the rod and took it for a spin. Still no automatic shift. I do not have the bracket Jim is talking about. The car came with a bolt run through where the rubber stop would be on the throttle linkage that butts up against the block as a "replacement" for the bracket. Would that bracket being missing really throw the linkage off to the point of it not shifting regardless if the kickdown is connected?

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Jim Wulf
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Re: Cruise O'Matic Problems

Post by Jim Wulf » Fri Sep 13, 2019 2:36 pm

Kevhen1996 wrote:
Fri Sep 13, 2019 2:29 pm
I tried loosening the kickdown rod adjustment to the end of the rod and took it for a spin. Still no automatic shift. I do not have the bracket Jim is talking about. The car came with a bolt run through where the rubber stop would be on the throttle linkage that butts up against the block as a "replacement" for the bracket. Would that bracket being missing really throw the linkage off to the point of it not shifting regardless if the kickdown is connected?
Yes, it would. You need the original style rubber stop and throttle stop bracket for the contraption to work correctly. It's an odd, but critical, piece of Ford engineering. It's an easy fix - don't think twice about not doing it.
Jim W, VTCI 1961-1963 Technical Editor
62 SR Red/Black
63 CV Black/Red
67 MGB Roadster
38 MG TA Tickford Drophead Coupe
Past Birds:
63 MSR Red/Pearl Beige
66 CV Red/Red
63 CV Patrician Green/Pearl Beige
61 HT White/Pearl Beige
63 HT Caspian Blue/Blue

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RedBird64
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Re: Cruise O'Matic Problems

Post by RedBird64 » Fri Sep 13, 2019 9:49 pm

I don't believe the linkage being wrong, misinstalled or misadjusted would keep the trans from shifting if the kickdown isn't connected. There just isnt any connection.

As long as the kickdown linkage is not connected or somehow being moved at the trans, nothing that happens with the throttle linkage (or the modulator) will keep it from shifting.

Another way to look at it; So long as the rear wheels achieve the appropiate speeds, the trans will shift regardless of what is going on with the throttle linkage. These trans were pretty simple!

Scott
1964 Coupe Wimbledon white/Rangoon Red w/black int. Owned for 42 years. It was my folks car before that (second owners). VTCI # 12013.

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Jim Wulf
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Re: Cruise O'Matic Problems

Post by Jim Wulf » Sat Sep 14, 2019 10:04 am

:mrgreen:
RedBird64 wrote:
Fri Sep 13, 2019 9:49 pm
I don't believe the linkage being wrong, misinstalled or misadjusted would keep the trans from shifting if the kickdown isn't connected. There just isnt any connection.

As long as the kickdown linkage is not connected or somehow being moved at the trans, nothing that happens with the throttle linkage (or the modulator) will keep it from shifting.

Another way to look at it; So long as the rear wheels achieve the appropiate speeds, the trans will shift regardless of what is going on with the throttle linkage. These trans were pretty simple!

Scott
I was strictly addressing the lack of acceleration caused by the throttle stop issue, Although some folks often attribute sluggish acceleration to lack of transmission kick down. My point is to check the throttle linkage first before looking at the transmission which is much more complicated.
Jim W, VTCI 1961-1963 Technical Editor
62 SR Red/Black
63 CV Black/Red
67 MGB Roadster
38 MG TA Tickford Drophead Coupe
Past Birds:
63 MSR Red/Pearl Beige
66 CV Red/Red
63 CV Patrician Green/Pearl Beige
61 HT White/Pearl Beige
63 HT Caspian Blue/Blue

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