I've noticed on my 2014 v6 auto (performance pack) that when I step on it even if its not all the way, I get solid acceleration through first gear and then its either in second or third around 2.5-3k RPMs, the RPMS dip ever so slightly before beginning to increase. If I'm not accelerating hard at all, I don't seem to get this problem, perhaps because I'm not reaching that range very often. Is there a problem with the car or has anyone else noticed this? I'm wondering if it has to do with the programming of the car. It's done it ever since I've owned it (almost two years now). If I think of it, I'll post a video of what I'm talking about but until then, any ideas?

 

It might be the torque converter locking and is normal

 

If it is the torque converter, will that be changed when I tune the car later?

 

Have you been able to address this with your Ford Dealer, mkj5013?

Deysha

 

No I haven't as it hasn't seemed like something is actually wrong, just something in the programming of the vehicle.

 

Mine does the same thing. I also think it has something to do with the programming.

 

I thought the same thing too

 

I believe post #2 has a good point. If the torque converter is locking up you are actually putting more power down because of the loss inherent to torque converters.

If this is the case, you car is likely not slowing down, its changing from a situation where more load in put on the motor causing a reduction in RPM or rate of RPM gain.
Can you tell by the speedo if the car is slowing or if the RPMs and therefore the sound is reduced while the car continues to accelerate?

Lock up is a good/great thing. Saves us money on fuel and added a little power to the wheels by removing torque conversion....so to speak.

 

Correct. The RPMs drop when the converter locks up since the converter "slippage" is now gone. I think the speed you see the dip is right around the converter's stall speed.