You can expect it to rev to 5200 if you set the shift at 5000. The clutch bands release at 5000, and since the engine is no longer seeing any "load" the rpms rapidly increase (remember, you still have your foot on the floor). Then, after the new gears move into place, the bands lock up again, bringing the rpms down. The unlocked torque converter softens this a bit, but you probably still feel a "lurch".
This kind of thing doesn't happen on a manual transmission, because you let off on the gas as you push the clutch in, adding it back as the clutch is released. Ford actually tries to mimic that a bit in an automatic with something called "torque reduction" that's applied during a shift. However, they overdo it in the name of a very soft shift and Bill reduces the torque reduction value.
This is why you need the max rpm set higher, by about 400 above your highest shift point. If the rev limiter is hit, the engine fuel and ignition (I think) is immediately cut, which causes the rpm to immediately drop. Then, the PCM senses a low rpm and tries to put you back into the lower gear, causing the process to repeat until you ease off on the gas.
Glad you like the way it's working now though.
- Jack
|