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Old 10-02-2015, 07:46 AM   #1
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Auto problem

I've noticed that sometimes when I'm cruising and stomp the gas to go wot that the car will downshift a gear, then about 1 second later it drops another gear(the gear it should have dropped to at first). I'm guessing this is a drive by wire issue and not a trans issue. Anyone else have this?

My car is tuned by lund, but I'm 99% sure it did it once or twice before it was tuned.


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Old 10-02-2015, 09:12 AM   #2
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Originally Posted by Billgluckman View Post
I've noticed that sometimes when I'm cruising and stomp the gas to go wot that the car will downshift a gear, then about 1 second later it drops another gear(the gear it should have dropped to at first). I'm guessing this is a drive by wire issue and not a trans issue. Anyone else have this?

My car is tuned by lund, but I'm 99% sure it did it once or twice before it was tuned.

Bill - Having had a few auto Ford's in my family and living with a brand new truck right now I can tell you that their transmissions are less than pleasing sometimes.

Get with your tuner and they should be able to fine tune/work through this with you.

Alex
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Old 10-03-2015, 11:18 AM   #3
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Quote:
Originally Posted by Billgluckman View Post
I've noticed that sometimes when I'm cruising and stomp the gas to go wot that the car will downshift a gear, then about 1 second later it drops another gear(the gear it should have dropped to at first). I'm guessing this is a drive by wire issue and not a trans issue. Anyone else have this?

My car is tuned by lund, but I'm 99% sure it did it once or twice before it was tuned.


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The auto's Imo are slushboxes from the factory, I noticed the exact same thing along with sluggish downshifts. A tune from Mpt or Bama ect will definitely fix this issue. The factory tune is terrible for the auto's.

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Old 10-04-2015, 12:50 AM   #4
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Originally Posted by AMAlexLazarus View Post
Bill - Having had a few auto Ford's in my family and living with a brand new truck right now I can tell you that their transmissions are less than pleasing sometimes.

Get with your tuner and they should be able to fine tune/work through this with you.

Alex
Yeah I think I'll email lund and see if it's been an issue before.

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The auto's Imo are slushboxes from the factory, I noticed the exact same thing along with sluggish downshifts. A tune from Mpt or Bama ect will definitely fix this issue. The factory tune is terrible for the auto's.

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lund tune, not factory, but like I said, I think it was an issue with factory tune as well.
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Old 12-05-2015, 09:41 PM   #5
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Has no one else had this issue?

I just contacted lund earlier, I'm waiting to see what they their solution is.
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Old 12-06-2015, 09:02 AM   #6
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This is going to follow you primarily because these are multi-speed autos, it isn't just a Ford thing. Think for a sec about the dozens of different conditions of load, throttle angle, rpm and speed, etc that the trans is working on at any given time. You wouldn't necessarily want the car jumping down two gears if you were just putting around town, for example, or had just come off the throttle due to traffic but were still close to highway speed. The tuning will always default to the least number of downshifts necessary to move the car, it has to. This leads to situations where the box seems to be in the wrong gear for the sensation you are after but, generally the car moves forward and keeps up with traffic.

In the old days, with a three speed auto, it only kicked down once and it was purely throttle angle based. Simple, direct and slow as balls, because the ratios were far from ideal and those old boxes took 60 horses to run them. The kickdown generally resulted in more noise and that was about it. It felt like performance but wasn't.

By and large, I found the auto tuning to be OK on my 2014 but, the shifts were still too slow for me and the rev limiter was set a little low. VMP fixed up the box pretty well with their auto tune, without it getting stupid.
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Old 12-06-2015, 09:07 AM   #7
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I have the same issue with my car too. It also takes about 2-3 seconds down shifting before taking off. By then I already lost that race lol
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Old 12-06-2015, 10:18 AM   #8
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This isn't an "issue". It's expected the trans will work its way up the box at cruise so it's going to have to work its way down when you step on it. It's like being caught in 6th gear on the manual in a roll race. You'll lose every frickin' time and the answer is the same as the auto is providing you, down shift.

You want to be sure of being in the "right" gear? Selectshift, baby.....
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Old 12-06-2015, 02:57 PM   #9
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This isn't an "issue". It's expected the trans will work its way up the box at cruise so it's going to have to work its way down when you step on it. It's like being caught in 6th gear on the manual in a roll race. You'll lose every frickin' time and the answer is the same as the auto is providing you, down shift.

You want to be sure of being in the "right" gear? Selectshift, baby.....
What I was experiencing WAS an issue. The trans should not downshift twice at wot.

Lund suggested that I reflash the ecu with the tune and it solved the problem. Shifts down one time to the appropriate gear when the pedal is floored now.
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Old 12-06-2015, 04:01 PM   #10
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If you've been doing a lot of dawdling lately, the adaptive shifting will adjust the shifting to suit that style of driving. That doesn't make it an issue and can be cured with a fuse 47 pull, rather than reflashing the tune.
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Old 12-06-2015, 10:33 PM   #11
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AED tuned here and I've experienced the issue a couple times. I've noticed if I put my foot down faster then the issue doesn't occur.

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Old 01-11-2016, 07:35 PM   #12
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AED tuned here and I've experienced the issue a couple times. I've noticed if I put my foot down faster then the issue doesn't occur.

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Good to know.

Just to update the car started the crap again soon after the retune. I tried the number 47 fuse as well and if it helped it didn't last long. Sometimes the car downshifts perfect, sometimes it doesn't. It isn't a huge problem at the moment, just annoying.
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Old 01-12-2016, 11:50 PM   #13
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Like what was mentioned above you have to flash the throttle very fast and it'll usually go down only once in gear. Sometimes people want to roll on the throttle so the car jumps down and jumps down again. Mine will also do this when spinning the tires really bad, it skips from 1st to 3rd then once it gets traction downshift back in to 2nd. it's very annoying.
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Old 01-13-2016, 11:47 AM   #14
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Grabber it sounds like you have traction control on. If you haven't done it yet, hold the brake and trac control button for 6 seconds or so until you see "advance trac off". That might be your problem. Mine doesn't do what you described.


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Old 01-13-2016, 11:49 AM   #15
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Also, mine does the double downshift when I stomp the gas. I'm sure rolling into it would cause that but I'm pressing the peddle as fast as you can.


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Old 01-13-2016, 03:33 PM   #16
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Bill, at what speed and gear are you in when it does the double downshift? These auto transmissions shift off mph not rpm. Have you checked your speedo by GPS? Are your tires factory height? May have (forget) that trans sensor going bad that measures appropriate mph for shifts. FYI.
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Old 01-13-2016, 03:43 PM   #17
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Bill, at what speed and gear are you in when it does the double downshift? These auto transmissions shift off mph not rpm. Have you checked your speedo by GPS? Are your tires factory height? May have (forget) that trans sensor going bad that measures appropriate mph for shifts. FYI.
The cars computer relies on several sensors to decide when and how to shift.
• Input shaft speed sensor - Engine speed on the transmission side of the torque converter
• Output shaft speed sensor - Road speed
• Throttle position - How far the accelerator is pressed
• MAP sensor - Engine intake vacuum, which is a function of throttle position and engine load.
• Temperature - Shift firmness varies based on transmission temperature to account for the fluid's properties over the wide range of operating temperatures.
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