Transmission Throttle Blip

C4talyst · Jun 7, 2023

I have a 2021 ST with 26k miles on it. Recently it's started doing a throttle blip when shifting gears. I've only noticed this in Sport mode and it's more prominent when I'm using paddle shifters.

Has anyone else experienced this or know if it was perhaps part of a software update?

2020FordRaptor · Jun 7, 2023

Our 2020 always did it and our 2022 does it also. One of my favorite parts of the car. It will throttle blip harder in manual.

C4talyst · Jun 7, 2023

2020FordRaptor said:

My 2020 never did this and my 2021 just started recently after a year and a half of driving. It's not a smooth/enjoyable blip either like you'd have with a Porsche or Ferrari...it's kinda rough. Wondering if the software started implementing it due to a transmission condition or driving habit.

UNBROKEN · Jun 7, 2023

Sounds more like a shift flare…which isn’t a good thing.

C4talyst · Jun 7, 2023

UNBROKEN said:

Was not familiar with that term...reading up on it that does around like what's happening.

2020FordRaptor · Jun 7, 2023

C4talyst said:

My 2020 never did this and my 2021 just started recently after a year and a half of driving. It's not a smooth/enjoyable blip either like you'd have with a Porsche or Ferrari...it's kinda rough. Wondering if the software started implementing it due to a transmission condition or driving habit.

Yah it shouldn’t do it roughly.

Cdubya · Jun 8, 2023

It wouldn't hurt to reset transmission adaptive learning. I usually doso with Forscan Lite iOS

StevieB · Nov 4, 2023

Anyone experiencing a loss of power after taking foot off accelerator then getting back onto the accelerator - for example : cruising through a residential area and having to slow down and take your foot out of the gas and then getting back on the throttle and trying resume speed and NOTHING... wait a couple of seconds and then it has a small backfire from the exhaust and back to normal? I am not sure if it is fuel delivery or transmission related or maybe something else. Any ideas will help as I have had it back to both of the local dealers and they are at a loss, the changed the valve body and seems like that didn't help as it is still doing it.

StevieB · Nov 16, 2023

Cdubya said:

The Dealership I go to has said they won't do it as there is no codes to confirm the problem and are awaiting Ford Engineers to get back to them for a path they can start down. I have also been told it maybe my cat back Borla exh.

Cruising68 · Nov 16, 2023

StevieB said:

Anyone experiencing a loss of power after taking foot off accelerator then getting back onto the accelerator - for example : cruising through a residential area and having to slow down and take your foot out of the gas and then getting back on the throttle and trying resume speed and NOTHING... wait a couple of seconds and then it has a small backfire from the exhaust and back to normal? I am not sure if it is fuel delivery or transmission related or maybe something else. Any ideas will help as I have had it back to both of the local dealers and they are at a loss, the changed the valve body and seems like that didn't help as it is still doing it.

Have this occur a couple times a month. I assume it is torque management to help the trans.

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StevieB · Nov 16, 2023

Cruising68 said:

This happens several times while I drive it- even more noticeable when I’m in sport mode. Do you have any mods done?

StevieB · Nov 16, 2023

PS: Thank you for your reply.

Cruising68 · Nov 16, 2023

Catted downpipes, intercooler, intake, lowering springs, ZFG 93 tune, super forged big brake kit.

Usually I’m pulling out then see a car and let off gas then hit it after car passes. Almost always hitting the gas right after letting off, like within a second, will result in a pause for about a second. Subconsciously I think I have changed my habits to avoid it.

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StevieB · Nov 17, 2023

Yes that is exactly whats happening to me. So I have been experimenting with Sport Mode and Manual shift, it is a considerable BOG- Pause and nose dives. It is like someone turned off the fuel when shifting up the gear and then dumped all the fuel back into the cylinders. Still no engine lights

BrooseDaMoose · Nov 17, 2023

C4talyst said:

I have a 2021 ST with 26k miles on it. Recently it's started doing a throttle blip when shifting gears. I've only noticed this in Sport mode and it's more prominent when I'm using paddle shifters.

Has anyone else experienced this or know if it was perhaps part of a software update?

Check out this thread: here.

StevieB · Nov 17, 2023

BrooseDaMoose said:

I’m going to try spark plugs this weekend and try again to see if it smartens up, I will report findings.

StevieB · Nov 18, 2023

StevieB said:

Just replaced the spark plugs with the NGK and no difference. Still when driving and slowing down to go around the corner -roll the corner and get back into the throttle dead and then bogs and then backfires or pops from the right tailpipe and then look out as it is ready to rip!!

BrooseDaMoose · Nov 18, 2023

Sounds like it could be turbo lag. The backfire is from holding the throttle open and the air/fuel mixture not being completely used up in the engine so it builds up in the exhaust system and then ignites, causing a backfire.

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StevieB · Nov 18, 2023

BrooseDaMoose said:

That is exactly what it is doing. How does one fix the turbo lag? programmer-Tuner?

2020FordRaptor · Nov 18, 2023

StevieB said:

Maybe that studder is the transmission shifting into a lower gear. I know eco and normal mode has a very noticeable lag when I step on it. Sport mode alleviates that problem.

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