Bucking/Surging Epidemic

[seasprite]

$94 USD for just the sensor?! That's high...the sensor alone in US is $12 plus shipping...the sensor assembly with new hose/bracket/clamps is $80 + shipping...

Where are you guy's finding these for $12.00? All the web sites I check it shows $56.00 for just the sensor.

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[Msfitoy]

Where are you guy's finding these for $12.00? All the web sites I check it shows $56.00 for just the sensor.

I can't remember which of the online Fords...Levitownford or another one I can't recall right now....

 

[VAMike]

It's really irritating that ford hasn't dealt with this yet. The kind of stuff that does the opposite of building brand loyalty.

 

[ronsipp]

Thank you guys. I replaced the sensor and no more bucking or surging. I went the cheap route and got only the sensor. Rockauto has them for $14.33 + $10.99 shipping.

https://www.rockauto.com/en/moreinfo.php?pk=13959421&cc=3443244&pt=5088&jsn=1027

 

[gov cheese]

Rock Auto is out of stock for the cheaper option and since this is my DD picked up full assembly from local STEALERship had in stock $76. Thanks to this site problem is gone so, didn't lose a few hundred at the stealership trying to figure it out. Think ford is chasing MPG to the point where if this sensor is not 100% the engine stumbles at low RPM. Going to dry out the old sensor and try it if the problem starts again. My problem area is/was 30-45 -- 7/8 gear 1500 rpm engine stumble.

 

[Msfitoy]

Awesome! Everyone's catching on...no more mystery...

 

[gryder]

Another better running Ranger here!

Forgot to mention, I have a 2019 with 38k miles.

My issues I noticed before the sensor was when I was backing out of the garage and driving from a stop. When I pushed on the gas peddle it was delayed a second or 2 and then it would go. Was getting really annoying.

The other issue was, when I’m in the neighborhood going 20 mph the truck would be in 5th or 6th gear and it would be bogging down and kind of jerking so I would have to manually drop it down to 3rd or 2nd gear to keep up the rpm’s.

With the new sensor, both my issues are gone! I was happy when I hit the gas, it goes like a normal truck should. And I can cruise 6th gear around 20-25mpg with no bogging issues.

 

[melhoff13]

Replaced my valve today. A quick drive around the block and it seemed much smoother. I've had my 2019 since July of 2019. It has 80k miles on it and I've had the hesitation and bucking issues since the day I drove it brand new off the lot. It's been in the shop off and on over these last 4 years with no resolution. It seems as though this $12 part may have solved the issue. I really hope it lasts. I will know more when I drive it around town tomorrow but this forum has been a life saver. I love the truck. Now I may love it even more. I recently purchased a 2021 Bronco with 20k miles on it and I'm pretty sure it has the same hesitation issue. I may have to replace that one as well. Sheesh.

 

[Msfitoy]

Replaced my valve today. A quick drive around the block and it seemed much smoother. I've had my 2019 since July of 2019. It has 80k miles on it and I've had the hesitation and bucking issues since the day I drove it brand new off the lot. It's been in the shop off and on over these last 4 years with no resolution. It seems as though this $12 part may have solved the issue. I really hope it lasts. I will know more when I drive it around town tomorrow but this forum has been a life saver. I love the truck. Now I may love it even more. I recently purchased a 2021 Bronco with 20k miles on it and I'm pretty sure it has the same hesitation issue. I may have to replace that one as well. Sheesh.

See what I mean? Just makes one wonder how many Ranger owners struggle trying to find an answer with no solution from clueless dealerships...maybe they get lucky and happen to wonder here to find this thread by chance?

 

[melhoff13]

See what I mean? Just makes one wonder how many Ranger owners struggle trying to find an answer with no solution from clueless dealerships...maybe they get lucky and happen to wonder here to find this thread by chance?

The power of the googler....

 

[Msfitoy]

The power of the googler....

Problem is how to google symptoms that so difficult to describe...it's not like, "my truck ran out of gas what do I do" situation...I didn't understand that I had this problem and even after reading this thread it took me to page 26 before I understood what the hell is going on and after ordering the two part numbers did I realize they were essentially the same part but with very different price tags...

 

[melhoff13]

Problem is how to google symptoms that so difficult to describe...it's not like, "my truck ran out of gas what do I do" situation...I didn't understand that I had this problem and even after reading this thread it took me to page 26 before I understood what the hell is going on and after ordering the two part numbers did I realize they were essentially the same part but with very different price tags...

Agreed. I've been trying to figure this out for 4 years and 80,000 miles. I completely understand!!

 

[Count Desmondo]

Well. After watching this thread for awhile....I have to conclude that I need to replace the sensor on my 21'.

Still love the truck.

 

[ppfd]

P139C code
Is the parts mentioned here, the main culprit?

 

[Tres3]

Here's an interesting twist. She Who Must Be Obeyed was complaining about lag and stumbling in parking situations. Stealer said, "No MIL, No issue." I found this thread and talked with my SA at the next oil change. He thought about it and said it did sound reasonable and they would take a look. We didn't have time to leave it and scheduled a return visit for Monday the following week. On Saturday, SWMBO came home and said, "It's all ok now." Sure enough, the symptoms are gone. That was a month ago. Still zero issues. Maybe you just have to threaten it with a diagnostic...or maybe it just got hot enough here in TX to make the moisture go away, and the issue will return in the Fall.
36k Mi. 2020.

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