Hesitation on 3rd gear - Mustang Evolution

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Old 07-21-2015, 01:01 PM   #1
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Hesitation on 3rd gear

I was watching a youtube video of a V6 and someone commented about the hesitation on 2nd/3rd gear while accelerating. I thought I was the only one with this problem, and after a long search online, it looks like it is a very common problem!!

Some people took their mustangs to their dealerships and apparently no dealership had the problem resolved. Have you ever encountered this problem? It is there whether going slowly or WOT.

Here is a video showing the problem:

What are your thoughts?
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Old 07-21-2015, 01:49 PM   #2
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Bad tuning would be my suggestion. If it's an auto, buy a tune. From the video comments, seems like it is an Auto.
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Old 07-21-2015, 02:02 PM   #3
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tune, but to an extent the torque converter can only shift so fast.
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Old 07-21-2015, 02:04 PM   #4
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Yea probably a limitation as far as the load, etc. A tune MIGHT help smooth it out.
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Old 07-21-2015, 05:04 PM   #5
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Also your hitting a taller gear so the acceleration will not be as great as second gear just as second is slower than first


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Old 07-22-2015, 01:42 AM   #6
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Torque converter. Once I got my MPT tune this became noticeable. They told me it's normal


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Old 07-22-2015, 02:06 AM   #7
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RPMs will obviously not climb as fast on 3rd as opposed to 2nd, but that's not what I was referring to!

What happens to me exactly is: I go WOT from a dead stop, everything is fine, after shifting into second gear, RPMs start picking up again. Everything is fine up until now, but then, once RPMs reach 3500 to 4500 on 2nd, the RPMs' climb seems to pause for a couple of seconds, and then starts going up again normally. I'm not referring to the fact that RPMs will not be increasing as fast as on first gear, I'm talking about the rate being inconsistent on the same gear.

I did more research, and it looks like some people solved the problem by pulling fuse 47 (adaptive learning) for 10 minutes. I'm not planning on doing that though, and I'm going to be tuning in the next couple of days, and it is HIGHLY not recommended to pull the fuse after getting a tune as some noted some problems arising after doing this.

I'm not sure if this problem is present on Manuals or not, but I'll see what happens after tuning..
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Old 07-22-2015, 02:35 AM   #8
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You will be happy with the difference a tune makes.
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Old 07-22-2015, 05:54 AM   #9
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Sounds like a learning issue

My manual does not do this at all. She just goes.


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Old 07-22-2015, 07:55 AM   #10
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Quote:
Originally Posted by 20prima10 View Post
Sounds like a learning issue

My manual does not do this at all. She just goes.


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Your manual also doesnt have a torque converter.
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Old 07-22-2015, 07:58 AM   #11
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This is true. They used a pretty poor torque converter stock in the autos compared to what's out there as an option.


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Old 07-22-2015, 08:19 AM   #12
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Lol tell me about it. Try as i might on our last car i could never get under a 2.0 60', even with 3.73 gears. In the end though, the V6 was meant to be a comfortable cruiser, they have to appeal to the masses.
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Old 07-22-2015, 08:29 AM   #13
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This is true. Seeing how most of us on here are performance driven we find these issues that sent issues to most people who own these cars.


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Old 07-22-2015, 09:08 AM   #14
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KAC, I would try the relearn now just to see but you are correct about NOT doing it after a tune.

slight derail: With my MT 3.31 and the 3.7 3rd gear is the monster gear and it's kinda cool how when you get above 4K and the cams vary...you can just hear the engine note change and all of a sudden you are going "get in trouble speed"

carry on I just had to share.
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Old 07-22-2015, 11:04 AM   #15
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I believe that the torque converter automatically locks in 3rd gear so you are not getting the torque multiplication from it causing your RPMS to drop. The fix is to get the RPMS higher into the power band before the 2-3 shift.It is basically bogging down the engine. Our 3.7's are not torque monsters like 5.0's.
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Old 07-22-2015, 10:22 PM   #16
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My Ford Flex does this same thing. I always thought it was a problem and the trans was bad, but have been told it's totally normal. The torque converter is the most reasonable explanation I've heard as to why it does that.
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