Transmission issues
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New User
Joined: Nov 2020
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Transmission issues
I have a 2012 f 250 king ranch, and over the last couple of weeks it has started to develop a hard down shift from 5th to 4th and a delay when going from reverse to drive.It has also started shuddering some when I go to put it in drive, you can feel and hear it try to engage in a forward gear but it will go back and forth for a few seconds and then it'll take gear and be fine. I have taken it to the shop and tried to replicate the problem but itll only do it when its cold. They did do a diagnostic scan on it and everything checked out. Im trying to find other solutions besides rebuilding the transmission, which is the first thing they suggested. Has anybody dealt with this ?
Tuned
Joined: May 2019
Posts: 279
Likes: 14
From: Brookings, SD
Did you put Mercon LV in the trans, and is the fluid level correct when hot?
Fleet Owner
Joined: Jan 2004
Posts: 26,007
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From: Brentwood,CA
The whole valve body gets replaced as a whole, then the VB calibration needs to also be flashed.
Junior User
Joined: Aug 2015
Posts: 62
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How many miles on the truck? After i had a flush and fluid change on my 2008 350 5.4 at 92k miles. the tranny started to do what you are describing, but ended up working itself out. I went to google/youtube to look into what might be the problem AFTER a flush and fluid change.
I guess sometimes on a high mileage tranny, a flush can knock some debris loose in the tranny causing it to shift weird.
The dude on YT does a much better job of explanation that I ever could.
I guess sometimes on a high mileage tranny, a flush can knock some debris loose in the tranny causing it to shift weird.
The dude on YT does a much better job of explanation that I ever could.
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gravydude
1987 - 1996 F150 & Larger F-Series Trucks
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Jun 26, 2014 08:27 PM
