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Old 09-01-2015, 09:10 PM   #1
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Automatic transmission hesitation to downshift

I have a 2010 Mustang GT with an automatic transmission. Over the past year, it now hesitates when I drop the throttle. I nail the pedal and it does nothing for about 3 seconds, then Slam, the rpms fly across the gauge and then the car launches as I intended.

Is anyone aware if there was a Technical Service Bulletin on this? Maybe a software update was issued at some point?
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Old 09-01-2015, 10:51 PM   #2
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Definitely not right.

A tranny reflash isn't a bad starting point.

A little split second hesitation is ok but what you're describing is a very hard gear change.
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Old 09-01-2015, 10:52 PM   #3
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Hey, that really sucks! sounds to me like its pooched. Hopefully someone else chimes in.
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Old 09-01-2015, 11:25 PM   #4
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If it does nothing at all it doesn't sound like a transmission issue. Maybe a throttle body issue or something along those lines but I would take it to a shop.
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Old 09-02-2015, 12:12 PM   #5
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Thanks guys. The throttle body theory is one I hadn't considered. I will look into having the tranny programming re-flashed. It all comes down to $$ of course.
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Old 11-22-2017, 01:30 PM   #6
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Automatic downshift in sport mode

I have a 2013 mustang GT with the 6 speed automatic. When I am in sport mode and shifting manually, if I come to a stop without downshifting manually, should the transmission reset itself to first gear on its own in this mode when the car is stopped? I have other vehicles that do, but my Mustang does not. Is there possibly something wrong?
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Old 11-22-2017, 11:00 PM   #7
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Quote:
Originally Posted by Ac075627 View Post
I have a 2013 mustang GT with the 6 speed automatic. When I am in sport mode and shifting manually, if I come to a stop without downshifting manually, should the transmission reset itself to first gear on its own in this mode when the car is stopped? I have other vehicles that do, but my Mustang does not. Is there possibly something wrong?
as far as I know that is normal. They wanted to be sure that the driver had full control and could pick the gear they wanted to be in.
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Old 11-22-2017, 11:21 PM   #8
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Thank you Chadstang.
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