Seeking advice from any members who have brought their truck into Ford for 10r80 transmission issues

[LvRob]

It's spring in Pennsylvania so I no longer face the cold temps that trigger the transmission bad behavior. I am back writing about the new issue - the truck is bucking and pulsing at low speed in Drive. In Sport it seems to drive sweet but that's not a solution. What in the world is going on with bucking and pulsing and vibration at slight uphill roads with a fully warmed up engine?

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[RangerBill]

It's spring in Pennsylvania so I no longer face the cold temps that trigger the transmission bad behavior. I am back writing about the new issue - the truck is bucking and pulsing at low speed in Drive. In Sport it seems to drive sweet but that's not a solution. What in the world is going on with bucking and pulsing and vibration at slight uphill roads with a fully warmed up engine?

You may have a bad DPFE EGR differential pressure sensor. It is fairly inexpensive and easy to replace. It causes the engine to buck at light throttle and low speeds.

See this thread:
https://www.ranger5g.com/forum/thre...mbly-replacement-write-up-lb5z-9j433-b.29247/

 

[LvRob]

You may have a bad DPFE EGR differential pressure sensor. It is fairly inexpensive and easy to replace. It causes the engine to buck at light throttle and low speeds.

See this thread:
https://www.ranger5g.com/forum/thre...mbly-replacement-write-up-lb5z-9j433-b.29247/

I had the DOFE valve replacement ready in the basement. It's been sitting there for over a year. Yes, replacing it made all the difference. Thanks very much.

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