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Used to own a F250 so I am new to the F150. I am currently in a 2014 F150 fx4 with about 10k miles on it. I noticed when the truck is shifting into 3rd (normal acceleration)the rpms once in third remain around 1800 then drop to 1400ish after about 2 seconds or so while still in third (almost like its shifting again). Does anyone else have this experience or know what it is?
Yea, the posts above are right; its the torque converter. The only gears i don't notice it lock up is 1 or 2. 1 and 2 may be too low, or I just can't tell. With the 5.0 I can tell when it locks up by the exhaust note and the slight rpm shift.