Automatic transmission not shifting properly?? - JeepForum.com

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post #1 of 16 Old 09-05-2009, 05:40 PM Thread Starter
theplasterman
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Automatic transmission not shifting properly??

I just swapped out the old carter carburetor for a new Weber 32/36. When I took it for a spin around the block the automatic transmission won't shift properly. It drags out and shifts at a higher RPM than it did before the swap. It is a brand new transmission and was working fine before I swapped out for the Weber. Is there a vacuum line or something that connects to the carburetor that affects the transmission? Also, I disconnected the stepper motor from the Carter and didi not hook it back up nor did I do the Nutter bypass yet. Could that be affecting the transmission?


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post #2 of 16 Old 09-05-2009, 05:48 PM
VACJ7
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Is it a TF999? Sounds like you need to adjust the throttle position linkage to the trans. The procedure is in the FSM if you got it. It's pretty easy and important.
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post #3 of 16 Old 09-05-2009, 06:01 PM Thread Starter
theplasterman
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Forgive my ignorance but what is the FSM?

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post #4 of 16 Old 09-05-2009, 07:07 PM
mcmud
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That would be the Factory Service Manual. There is a download available somewhere on this board, a generous gift to the jeep world given by CJ Chet.

There is no connection either in vacuum nor with the computer to the TF999

What you are experiencing is the position of the oem throttle linkage since you have installed the new bell crank type linkage to the new carb

Here is an image out of the Chilton manual of where to look. There should be IIRC approx. 1/2" at idle between the indented stop of the arm and the the oem linkage pin.

As mentioned above it is important for you to make the adjustment before driving anymore.
-------------------------
EDIT Found it, http://www.civilianjeep.info/84-86FSM/CJ-FSM-84to86.pdf
Attached Thumbnails
misc photos 026.jpg  

Last edited by mcmud; 09-05-2009 at 07:21 PM.
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post #5 of 16 Old 09-05-2009, 07:47 PM Thread Starter
theplasterman
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Thanks I will see if that helps. The transmission is a TF 727

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post #6 of 16 Old 09-05-2009, 10:08 PM
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The longer the shift rod is set, the higher RPM the trans will shift.
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post #7 of 16 Old 09-05-2009, 10:46 PM Thread Starter
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The shift rod? Is that the linkage as shown above?

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post #8 of 16 Old 09-05-2009, 11:21 PM
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Is the vacuum line hooked up to the modulator?

95 xj bone stock for now
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post #9 of 16 Old 09-05-2009, 11:23 PM
mcmud
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Will you identify which of these pan covers match to your trans.?
Do you have the linkage as shown in the image above?
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727.jpg   999.jpg  
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post #10 of 16 Old 09-06-2009, 09:25 AM Thread Starter
theplasterman
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The top picture shows the tranny pan. Yes my linkage looks like the one above.

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post #11 of 16 Old 09-06-2009, 09:49 AM Thread Starter
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Here are some Pictures

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post #12 of 16 Old 09-06-2009, 04:40 PM
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Here's a link to the FSM:

http://www.civilianjeep.info/84-86FSM/CJ-FSM-84to86.pdf

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post #13 of 16 Old 09-06-2009, 05:20 PM Thread Starter
theplasterman
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What does it mean when it says to "set the throttle off the fast idle cam"?

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post #14 of 16 Old 09-06-2009, 05:46 PM
mcmud
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That would be off of the fast idle lever in your application. That is used to maintain fast idle until the choke plate is open which would pull that lever away from the fast idle screw. Purpose is to be certain that the linkage is sitting in the normal running position.
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post #15 of 16 Old 09-06-2009, 09:19 PM Thread Starter
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Got it dialed in guys, thanks for all the help!!

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