F250 auto-trans shift problems
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F250 auto-trans shift problems
greetings to all forum members, this is my first post.
i have a 79 F250 supercab 4x2 with a 460. the automatic transmission doesn't want to shift into 3rd and when it does, it slips back to 2nd and then back and forth repeatedly. i noticed the rear tranny mount bolts were gone and a bad splice job someone did on the wires leading away from the side. i replaced the bolts and secured the wires but this did not help.
other items of interest:
*i have over sized rear tires http://i7.photobucket.com/albums/y298/Ralph_Chunks_Jr/1443c088.jpg
*possible engine lifter noise/tap
*light shudder at freeway speeds
http://i7.photobucket.com/albums/y298/Ralph_Chunks_Jr/F250sidefront.jpg
i have a 79 F250 supercab 4x2 with a 460. the automatic transmission doesn't want to shift into 3rd and when it does, it slips back to 2nd and then back and forth repeatedly. i noticed the rear tranny mount bolts were gone and a bad splice job someone did on the wires leading away from the side. i replaced the bolts and secured the wires but this did not help.
other items of interest:
*i have over sized rear tires http://i7.photobucket.com/albums/y298/Ralph_Chunks_Jr/1443c088.jpg
*possible engine lifter noise/tap
*light shudder at freeway speeds
http://i7.photobucket.com/albums/y298/Ralph_Chunks_Jr/F250sidefront.jpg
Last edited by Torque1st; May 13, 2006 at 12:59 AM. Reason: remove sh*tty
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From: Spokane, WA
I am assuming that your truck has a c6. I would check the kickdown linkage for proper adjustment and inspect the vacuum line running from the rear of the intake manifold area to the transmission on the right side. My kickdown lever was messed up after installing an aftermarket carb and not using the correct adapter for the kickdown. When the correct adapter was installed it made all the difference in the world.
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Originally Posted by tjay460
I am assuming that your truck has a c6. I would check the kickdown linkage for proper adjustment and inspect the vacuum line running from the rear of the intake manifold area to the transmission on the right side. My kickdown lever was messed up after installing an aftermarket carb and not using the correct adapter for the kickdown. When the correct adapter was installed it made all the difference in the world.
Can't help with the tranny problem, just wanted to say NICE LOOKING TRUCK!
and this too: http://home.comcast.net/~rage-aholic/79FordHwy680b.wmv
Last edited by JurassicDARK460; May 13, 2006 at 10:24 AM.
i ain't rite
Joined: Mar 2005
Posts: 65,447
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From: Marlboro Mental Hospital.
check that the kick down rod has free travel from both up top at the carb and down at the trans. it sounds like the kick down is stuck in full throttle mode.
i bought a truck that did the same thing for my nephew. the guy said the trans went bad after he got done doing a full tuneup on it .i test drove it and paid $400 for it. then i opened the hood and took the kick down rod out of the spark plug wires that were holding it in a wide open throttle position, and drove it home that was 2 years ago, and he is still driving the heck out of it. the guy i bought it from looked and felt like the worlds biggest azz when i took the new wires off the rod.
i bought a truck that did the same thing for my nephew. the guy said the trans went bad after he got done doing a full tuneup on it .i test drove it and paid $400 for it. then i opened the hood and took the kick down rod out of the spark plug wires that were holding it in a wide open throttle position, and drove it home that was 2 years ago, and he is still driving the heck out of it. the guy i bought it from looked and felt like the worlds biggest azz when i took the new wires off the rod.
