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With all the transmission talk, I have a few questions to see if I potentially have an issue. This is my first Ford and my first 4x4, so it may just be new to me, but some sounds and such I haven't gotten used to yet:
2010 EL Limited, coming up on 5000 miles now.
1) During low speed driving I hear a whine, don't know if it is just loud enough when I speed up that I can't hear it
2) There is a definite "lurch" when shifted into gear, extra noticeable when the engine is on higher idle (like when it sits out in the cold), but does it every time I start and shift into gear (R or D).
Am I just being picky, anyone else have these sounds/feelings?
I have the lruch and it has never gone away. It is crazy how it will jump when moved from drive to neutral. I do it in traffic and drive thrus. If your foot is not firmly planted on the brake shes gonna lurch forward as you make the D to N switch...but why? Is it too much line pressure? I have no idea and neither does Ford as "it is all within spec"
White Sand 08 Expy EL Limited 4x4 with everything but the power running boards & trip tunes.
I would recommend asking Dana Sniff guy has been rebuilding tranny's for over 30 years did my c6 on my 89 bronco and the only lurch it has is going from 1st-2nd and 2nd-3rd. Nice firm shift.
The 6 speed is much different then a C6 sorry to say. In the way the clutch are applied and the converter technology. This is why old transmission guys are saying the "new ones are junk" but truthfully they are moving more weight with more power longer without failure.
You will have wind up in the drivetrain due to the IRS. There is more to load and unload when torque is applied vs a solid axle and multi link suspension. You'll also notice that say if you power braked the truck the rear end actually rises vs a standard axle that will pull down when loaded.
I first noticed this in a company explorer and then when we moved to expeditions.
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