Possible transmission issue for automatic ?

[MustangNoob]

Notice in the videos how "hesitant" the acceleration is at the 4th gear. The RPMs are also slightly appear to drop. I tried this in manual mode as well but it seems to happen in the 3rd gear. it mostly happens at very moderate constant throttle. Any ideas? Drive mode is set to Normal

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[Alan Applegate]

I guess I'm missing the hesitation, as all I hear (and see) is a ratio change.

 

[Skye]

it mostly happens at very moderate constant throttle.

That it happens most often when the throttle is being held...It's like a sweet spot (speed, gear, pedal position, etc.) for the shift logic of the trans where it can't decide to stay in the present gear or upshift. If that's the only issue, it's not unusual. I've driven several autos that can act that way, especially while driving on the highway.

How many miles on the car?

Always done it since new? Or, is this a new issue?

Only in these gears?

Only while in this mode?

Any modifications to the car?

Others with an AT can offer their inputs. Two things I can think of that could help:

- The shift tables. The car stores them and how the owner had driven over time. It could help by clearing those and letting the car re-learn your habits

- That is happens only in these gears, I'm not sure if the following would help: checking the fluid level. Some ATs have been found low in fluid. This is not a chronic issue for the S550 or S650, but it's one of the first things to check when people have shift issues

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