Bucking/Surging Epidemic

[SuperTRev]

My truck is buck central too. 2019 XLT, 18k km.

From park, put it in drive but keep the brake on; not going anywhere yet. Buck.
Foot on the gas a little bit, but change my mind and have to brake instead. Buck.
Cold weather. Always buck.
Any gas pedal pressure that isn't 100% steady and smooth. Buck.

I've been blaming it on the computer learning up until now, but I dunno might be other factors.
The computer learning is without logic anyway. It makes it so the driver has to drive the exact same way every time, or the computer doesn't know what to do. Or a different driver.

How come the truck has to anticipate my decisions before I make them anyway? Doesn't Ford know that God invented sport mode for a reason?
Something about line pressure and spooling the turbocharger. Ok, but what good is decent acceleration if it's delayed anyway? So why not keep the turbocharger only for sport mode to keep it spooled always and take it out of drive mode.

So Ford can fudge the gas economy numbers, that's why. Same reason auto start stop can't be latched off. So Ford can appear green, putting a cheaper 4 cyl lawnmower engine in the truck, but still getting to say it has good performance. It only has good performance because of the turbocharger/10 speed transmission combo. But the computer evidently can't handle it. So Ford looks good and the Ranger owner gets screwed.

My stance is Ford has been building transmissions for a hundred years, and they still can't get it right? At a $50k price tag, I'm being a beta testing guinea pig for a new kind of transmission? How bout no.

Sponsored

 

[navsnipe]

Have any of you guys tried to clean the moisture from the sensor and reinstall it? It seems to be a simple differential pressure sensor.

 

[Wytchdctr]

The only time I get any bucking like issue is when school zones were active. If I didn't have it in tow mode it would get grumpy about soft throttle input coming from 20mph in some silly high gear.

Not an issue when driving normally for me. Quick to downshift with my typical gas pedal mashing. I just didn't want to get on it coming out of a school zone...

To avoid bucking for a sensor in going to replace this one when I get closer to 50k I think. Or.. try cleaning it out at least as mentioned above.

 

[SuperTRev]

Have any of you guys tried to clean the moisture from the sensor and reinstall it? It seems to be a simple differential pressure sensor.

If I had any idea what you just said...

 

[AdamHarris]

My truck is buck central too. 2019 XLT, 18k km.

From park, put it in drive but keep the brake on; not going anywhere yet. Buck.
Foot on the gas a little bit, but change my mind and have to brake instead. Buck.
Cold weather. Always buck.
Any gas pedal pressure that isn't 100% steady and smooth. Buck.

I've been blaming it on the computer learning up until now, but I dunno might be other factors.
The computer learning is without logic anyway. It makes it so the driver has to drive the exact same way every time, or the computer doesn't know what to do. Or a different driver.

How come the truck has to anticipate my decisions before I make them anyway? Doesn't Ford know that God invented sport mode for a reason?
Something about line pressure and spooling the turbocharger. Ok, but what good is decent acceleration if it's delayed anyway? So why not keep the turbocharger only for sport mode to keep it spooled always and take it out of drive mode.

So Ford can fudge the gas economy numbers, that's why. Same reason auto start stop can't be latched off. So Ford can appear green, putting a cheaper 4 cyl lawnmower engine in the truck, but still getting to say it has good performance. It only has good performance because of the turbocharger/10 speed transmission combo. But the computer evidently can't handle it. So Ford looks good and the Ranger owner gets screwed.

My stance is Ford has been building transmissions for a hundred years, and they still can't get it right? At a $50k price tag, I'm being a beta testing guinea pig for a new kind of transmission? How bout no.

Geez man read back through this very thread and fix your problem and quit rambling on incoherently. You sound like some kinda Taco owner.

 

[navsnipe]

If I had any idea what you just said...

I was asking in general. If you don't know, you don't know.

 

[kieefer]

How the hell is everyone getting this off?????

Use some type of pliers to open the clamps, move them up the hose so they’re not re-clamped on the metal tube. Or cut the clamp off with a dremel tool.
Grab the hose with pliers and twist the hose to “unstick” it from the metal tube. Should then pull off easily.
Took me 20 minutes maybe to replace.

 

[SuperTRev]

Geez man read back through this very thread and fix your problem and quit rambling on incoherently. You sound like some kinda Taco owner.

These are all 'maybies' and trial and error replies.
How much time and money should I invest in a brand new truck when Ford has clearly sold me a dud. The point in detailing the experience is in case others have had the same experience.

 

[gotwheels]

following

 

[_N8_]

Hope this is helpful

I have been battling this light-throttle bucking/surging thing for about a year. It started off very subtle. It has gotten more regular lately and finally started throwing a code P139C. Found this thread through my searching of my problem and ordered LB5Z-9J433-B based on what you all were saying and the fact that with my truck having 46k miles on it, they couldn't guarantee the diagnostic and/or fix would be free of charge. 5-10 minute job to replace it on my own. Felt no bucking or surging on the way into work this morning. I will update if anything changes. Thanks all.

Some pics to complement the ones I quoted to help others with the replacement (you can see the two tubes the hoses connect to in the pic with it removed)...super easy job:

 

[kieefer]

Ok, swapping mine out didn’t make a difference. Granted I wouldn’t call my issue bucking or surging. Mine is a more of a miss/stumble around 1500-2000rpm an a occasional flat/stall at this rpm.
I’m convinced it’s the programming of the stock tune and lugging this 10speed tranny.
Mine runs much better on a aftermarket tune.

Anyway, if someone wants my 39k mile EGR with hoses that I took off - $30 shipped to see if clears up your issues.

 

[Rmayo]

I have had the surge/lugging for a month or so. Had dealer apply the TSB, continued to get worse, got to where tow/haul did not help. Changed EGR valve, I cannot duplicate the problem anymore. Happy ending.

 

[dapakattack]

I have had the surge/lugging for a month or so. Had dealer apply the TSB, continued to get worse, got to where tow/haul did not help. Changed EGR valve, I cannot duplicate the problem anymore. Happy ending.

Randy, how many miles did you have on your Ranger when the surge/lugging first started?

 

[Rmayo]

42000 miles, it is a 2019 Lairat.

 

[_N8_]

42000 miles, it is a 2019 Lairat.

Makes me wonder if these will be a consumable for us.

Sponsored