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SportTrac Discussion
Engine & Drivetrain
Truck is lurching forwards when stopped
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<blockquote data-quote="Bob McDonald" data-source="post: 923315" data-attributes="member: 54868"><p>That is the infamous tranny downshift 'bump'. The very first time that happened to me, I looked in the mirror to see who had rear ended me.</p><p></p><p></p><p></p><p>It will get to the point where when you are ready to go again, it 'still' will have not downshifted into first and you will try to start in a higher gear. I had to manually pull the shift lever down to first to get the darn thing to start off in first gear. A real pain.</p><p></p><p></p><p></p><p>Also, you will begin seeing the flashing 'O/D Off' light symptom.</p><p></p><p></p><p></p><p>I noticed that mine did that when the weather started to get warm. I ended up adding a second transmission cooler to keep the fluid temp down and that has help a lot. I didn't have any of the symptoms last summer.</p><p></p><p></p><p></p><p>Eventually, you are looking at potential major transmission work being needed.</p><p></p><p></p><p></p><p>Good luck.</p></blockquote><p></p>
[QUOTE="Bob McDonald, post: 923315, member: 54868"] That is the infamous tranny downshift 'bump'. The very first time that happened to me, I looked in the mirror to see who had rear ended me. It will get to the point where when you are ready to go again, it 'still' will have not downshifted into first and you will try to start in a higher gear. I had to manually pull the shift lever down to first to get the darn thing to start off in first gear. A real pain. Also, you will begin seeing the flashing 'O/D Off' light symptom. I noticed that mine did that when the weather started to get warm. I ended up adding a second transmission cooler to keep the fluid temp down and that has help a lot. I didn't have any of the symptoms last summer. Eventually, you are looking at potential major transmission work being needed. Good luck. [/QUOTE]
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SportTrac Discussion
Engine & Drivetrain
Truck is lurching forwards when stopped
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