Hesitation/Bucking @ 45 MPH under very light acceleration

[case2001]

Try disconnecting the EGR valve. You will get an EGR error code when you drive, but you will know right away if that's the issue. Mine never had an EGR error code until it had gotten much worse. It will only take a minute.


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[ezeq]

Skippy, kindly let us know if you did solve your issue. Thanks

 

[case2001]

Well I guess one of the above ideas was the fix.


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[Bedrck47]

The last time Skippy was on the forum was in Oct 2014. So asking him something now is useless. But that is one of the biggest problems on the forum is that people come on ask a question and get some answers and are never heard back again until they have a problem again. They want help but they can't take the time to update the results or to even say thank you.

 

[case2001]

Your right. I always try to be optimistic that it was fixed with one of suggestions above. Oh well. There are worse problems to deal with!


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[skipppy75]

Was checking my junnk mail and found a couple mails from here.
Sorry I thought I replied to this thread I had another one going also.
It is the Torque Converter that was causing the hesitation.
This is what I did to verify the issue.
I added "Lubegard Dr. Tranny Instant Shudder Fixx - Tranmission Treatment"
this fixed the issue for about 500 miles but it started coming back so I went in and had the transmission fluid flushed with BG service and cleaners.
Have not had an issue since.
I guess I am one of the lucky ones, I went in and told Ford I wanted a BG clean and total fluid exchange,
they told me without diagnosising I would need the torque converter replace.
Funny how you tell them one thing a month prior they have no idea what the issue is and want you to leave your truck for a couple days to diagnosis it, but when you go back and tell them what you want done they finally tell you something else and give you a wild quote to replace torque converter.
With a little bickering back and forth I finally got them to just do what I wanted.
Saved myself like $2k just doing the fluid exchange almost had to go find a mom and pop shop with heated fluid exchange to do it, got $100 off their $325 cost to exchange, they matched a local shop price.
So far so good no issues and about 5k miles later still going strong

 

[Bedrck47]

Thanks for the update hopefully it will help others

 

[case2001]

Thanks for the reply!


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[cericks]

This is encouraging to see a potential solution to the exact same problem i'm having in my 06 Eddie (155k miles) when in overdrive. I have never received a code or engine light - when i take it out of OD it works smoothly, but every once in a while i can feel a very mild hesitation going up steeper hills.

Question... is there a difference between a "BG clean and total fluid exchange" and a standard transmission flush? THANKS!!

 

[Jennifer Fradella]

This is encouraging to see a potential solution to the exact same problem i'm having in my 06 Eddie (155k miles) when in overdrive. I have never received a code or engine light - when i take it out of OD it works smoothly, but every once in a while i can feel a very mild hesitation going up steeper hills.

Question... is there a difference between a "BG clean and total fluid exchange" and a standard transmission flush? THANKS!!

Yes, I would like to know what the difference is, too. Thanks!

 

[JHolden]

I had exactly the same issue in my 2007 and a transmission fluid change also fixed it

 

[anthony galate]

hi on my 2004 expedition i had same problem at 1st was not bad then over a week got really bad took it to the shop it was bad cad converts on passenger side 700.00 later problem fixed. hope this is not your problem.
tony

 

[anthony galate]

hi on my 2004 expedition i had same problem at 1st was not bad then over a week got really bad took it to the shop it was bad cad converters on passenger side 700.00 later problem fixed. hope this is not your problem.
tony

 

[Atman246]

Hey there. I'd tend to agree with Indy about the tranny flush. Be sure they use the right fluid as that can cause issues as well. As for the harsh bump 1-2 or 2-1 shift,i had a transmission reburn done on mine and that cured it. Mine would noticably bump coming to a stop. A Ford tech buddy told me about the software update. Cured it right away. Mine's an 07 with 270,000 kilometres. Good luck.

 

[J Tuck]

This is encouraging to see a potential solution to the exact same problem i'm having in my 06 Eddie (155k miles) when in overdrive. I have never received a code or engine light - when i take it out of OD it works smoothly, but every once in a while i can feel a very mild hesitation going up steeper hills.

Question... is there a difference between a "BG clean and total fluid exchange" and a standard transmission flush? THANKS!!

Hey there,

I think I am experiencing a similar issue. My 2007 Expedition is just up past 190k miles and it has almost a surge where as I am accelerating, it will accelerate, let out, come back in strong, let out, come back in, repeatedly. It will accelerate through it... but some days it never goes away completely. It seems to still (very mildly and slowly) pulse in and out of power, even while cruising at highway speeds. The pulsing/surging is always at a slow rate (slower than your typical old diesel lope), and is never really a shudder like I have felt in other vehicles.

Let me know your thoughts. Plan is to pull the dipstick, inspect the fluid, and add a bottle of Lubegard Instant Shudder Fix (aka. Dr Tranny) to see if I get a week or two without the problem before getting a quote from the Ford Dealer on getting the fluid replaced with the heated exchange.

Also, what is "BG Clean"??? Asking so I don't look like a complete idiot when I walk in there...

Driving a stock 2007 Ford Expedition Limited 4WD with the center console deleted for Fire Department usage (Column Shifter).

 

[QGrey Goose]

Hey there. I'd tend to agree with Indy about the tranny flush. Be sure they use the right fluid as that can cause issues as well. As for the harsh bump 1-2 or 2-1 shift,i had a transmission reburn done on mine and that cured it. Mine would noticably bump coming to a stop. A Ford tech buddy told me about the software update. Cured it right away. Mine's an 07 with 270,000 kilometres. Good luck.

Hi
I got the same issues was told a rebuilt tranny..
Im see if they will do a software update, which I doubt

 

[QGrey Goose]

Hey there,

I think I am experiencing a similar issue. My 2007 Expedition is just up past 190k miles and it has almost a surge where as I am accelerating, it will accelerate, let out, come back in strong, let out, come back in, repeatedly. It will accelerate through it... but some days it never goes away completely. It seems to still (very mildly and slowly) pulse in and out of power, even while cruising at highway speeds. The pulsing/surging is always at a slow rate (slower than your typical old diesel lope), and is never really a shudder like I have felt in other vehicles.

Let me know your thoughts. Plan is to pull the dipstick, inspect the fluid, and add a bottle of Lubegard Instant Shudder Fix (aka. Dr Tranny) to see if I get a week or two without the problem before getting a quote from the Ford Dealer on getting the fluid replaced with the heated exchange.

Also, what is "BG Clean"??? Asking so I don't look like a complete idiot when I walk in there...

Driving a stock 2007 Ford Expedition Limited 4WD with the center console deleted for Fire Department usage (Column Shifter).

Hi
The Lubeguard Fix helped but the shudder came back.