Replaced Fuel Pump, 2019 still staggers when accelerating

[mrjhansc]

Hello all, 

I replaced the fuel pump this morning on my 2019 Edge SEL, with the 2.0, it is running better but still staggers and jerks when accelerating. It’s not throwing any codes, no engine light or anything. I replaced the coil packs at 70,000, plugs, MAS and air filters 3 months ago. It has 103,000 miles on it. 
any suggestions for what I can look at to correct this issue?

all advice and help is appreciated.

[WWWPerfA_ZN0W]

was the transmission programming updated? have you serviced the fluid?

[1004ron]

6 hours ago, mrjhansc said:

Hello all, 

I replaced the fuel pump this morning on my 2019 Edge SEL, with the 2.0, it is running better but still staggers and jerks when accelerating. It’s not throwing any codes, no engine light or anything. I replaced the coil packs at 70,000, plugs, MAS and air filters 3 months ago. It has 103,000 miles on it. 

What are you using to scan for codes?

[garycrist]

Spark plugs breaking down under load will cause that problem.How old and what kind gap etc.?

Boosted engines "loves dem plugs".

[mrjhansc]

35 minutes ago, garycrist said:

Spark plugs breaking down under load will cause that problem.How old and what kind gap etc.?

Boosted engines "loves dem plugs".

Plugs are a couple months old, .035 gap.

[mrjhansc]

3 hours ago, WWWPerfA_ZN0W said:

was the transmission programming updated? have you serviced the fluid?

The last time the transmission was serviced was at 62,000 miles, about 3 years ago, the torque converter went out and Ford wasn't too pleased that it had to cover the rebuild on the extended warranty. If there were an issue with the programming wouldn't that throw a code of some sort?

[mrjhansc]

50 minutes ago, 1004ron said:

What are you using to scan for codes?

Most recently I used an ANCEL AD310 OBDII/EOBD+CAN scanner. I ran through it several cycles, no codes in the queue and nothing pulls up under new codes. Not even a check engine light or the dreaded wrench light.

[1004ron]

9 minutes ago, mrjhansc said:

Most recently I used an ANCEL AD310 OBDII/EOBD+CAN scanner. I ran through it several cycles, no codes in the queue and nothing pulls up under new codes. Not even a check engine light or the dreaded wrench light.

I recommend that you use Forscan - yes, I've had other reputable scanners show no codes only to find that there was stored codes using Forscan.

 

The symptoms you describe there's bound to be codes stored.

[mrjhansc]

14 minutes ago, 1004ron said:

I recommend that you use Forscan - yes, I've had other reputable scanners show no codes only to find that there was stored codes using Forscan.

 

The symptoms you describe there's bound to be codes stored.

I will take a look with one of those, thank you.

[garycrist]

Why did you replace the plugs to begin with? Did it jerk/stagger before the plugs were replaced?

Try lowering the gap down to .28  It might be you are "blowing out" the spark with a wide gap.

 

 

What was the gap on the old plugs?

[dabangsta]

2 hours ago, mrjhansc said:

Most recently I used an ANCEL AD310 OBDII/EOBD+CAN scanner. I ran through it several cycles, no codes in the queue and nothing pulls up under new codes. Not even a check engine light or the dreaded wrench light.

I think it only does OBD-II codes, and not PCM or other modules. I used one like it, Torque on my cell phone, but not until I used Forscan on a laptop did I get the maturing/pending codes or eventually the ones that set the powertrain fault.

 

Mine went from slightly jerky (like the TSB...under 35 mph, I was setting up an appointment to get it programmed, if it met the criteria, on my own dime) to a whole slew of various solenoid and friction codes, some are E which is used for 5-8th, some are the frctions used for other gears, and that is how it was behaving, freewheeling above 4th gear unless I slowed down.

 

The p0771 from OBD-II was the only one I ever saw on just a code reader (it was 110 degrees outside and I was dying so I just took camera shots of the screen):

[mrjhansc]

10 hours ago, garycrist said:

Why did you replace the plugs to begin with? Did it jerk/stagger before the plugs were replaced?

Try lowering the gap down to .28  It might be you are "blowing out" the spark with a wide gap.

 

 

What was the gap on the old plugs?

Yes, it was staggering prior to replacing the plugs. I honestly don’t remember what the gap was on the old ones. I hadn’t thought about that. At this point I’m willing to try anything.

[1004ron]

9 minutes ago, mrjhansc said:

Yes, it was staggering prior to replacing the plugs. I honestly don’t remember what the gap was on the old ones. I hadn’t thought about that. At this point I’m willing to try anything.

A good starting point in the diagnostics is knowing the stored fault codes - the misfiring/staggering potential causes go beyond bad spark plugs.

[1004ron]

What's your oil change interval?

What oil and oil filter have you been using?

[mrjhansc]

12 hours ago, 1004ron said:

A good starting point in the diagnostics is knowing the stored fault codes - the misfiring/staggering potential causes go beyond bad spark plugs.

Waiting on the delivery of the FORscan cables to run the diagnostic this weekend. Like I said, it hasn't thrown any codes previously, no engine light or anything.

 

[mrjhansc]

10 hours ago, 1004ron said:

What's your oil change interval?

What oil and oil filter have you been using?

Change the oil every 5,000 miles, synthetic, not sure of the filter as I rely on the oil change place to take care of that.

[mrjhansc]

22 hours ago, dabangsta said:

I think it only does OBD-II codes, and not PCM or other modules. I used one like it, Torque on my cell phone, but not until I used Forscan on a laptop did I get the maturing/pending codes or eventually the ones that set the powertrain fault.

 

Mine went from slightly jerky (like the TSB...under 35 mph, I was setting up an appointment to get it programmed, if it met the criteria, on my own dime) to a whole slew of various solenoid and friction codes, some are E which is used for 5-8th, some are the frctions used for other gears, and that is how it was behaving, freewheeling above 4th gear unless I slowed down.

 

The p0771 from OBD-II was the only one I ever saw on just a code reader (it was 110 degrees outside and I was dying so I just took camera shots of the screen):

Thank you for this. I'll have the cables by this weekend, already downloaded the software. I am hoping that the learning curve isn't too steep when dealing with it.

[1004ron]

11 hours ago, mrjhansc said:

Change the oil every 5,000 miles, synthetic, not sure of the filter as I rely on the oil change place to take care of that.

A quick lube place? - wouldn't trust them.

[mrjhansc]

Finally got a code to pop up… looks like the torque converter clutch selonoid.

from what I’m discovering, there’s been a lot of issues with this in 2019-2021 models.

Anyone else have the staggering and jerking issue resolved with this replacement?

[Robert Slater]

We purchased a 2020 Edge (49,000 miles) and we have the staggering/jerking at take off and also when the speed is around 40 mph. We took it to Ford and they said it was the torque converter. They ended up replacing the transmission and torque converter. That did not fix the problem.

[enigma-2]

Mass Airflow Sensor dirty.

Bad ignition coil.

Faulty ignition coil boot causing short to ground under heavy load.

One or more spark plugs fouled.

A partially clogged fuel filter. 

[boostededge]

What ever happened?

[Cardi]

I was looking forward to find a resolution on this post.  Sadly, nobody has reported the issue as solved.  I had the transmission serviced, changed the air filter, changed the sparkplugs recently and had the fuel injectors cleaned.  Still, the jerking continues when the transmission does the first shift and forward,  at constant speed and highway speeds does not happen.  I am suspecting it having to do with the transmission somehow. I bought mine (2019 SEL 2.0) with 14000 miles and the jerking started at around 50K miles.  It has now reached 90K. I don't know what else to try.  I kind of got used to it and I love the way it drives, but I would like to have this fixed to have the perfect car. If anybody happens to get results with something, please share. 

 

[enigma-2]

Bad or worn out transmission fluid can cause this problem, but as you stated,, you just had the fluid and filter changed and that eliminates that possibly. 

 

But there's also another possibility, and its a well known and well documented issue that's directly traceable to the vehicle's 8F35 transmission (and isn't fixed with transmission service.)

 

Ford released a TSB for the 2019 model year (through 2021 or 2022 I believe) where the car jerks at low speeds in the first shift. (It doesn't do it after 35 mph). The fix is painless and simply involves reprogramming the software for the PCM. (It updates the  transmission solenoid shift  strategy, i believe.)

 

Visit your local Ford Dealer and ask for a diagnostic scan,  specifically checking for TSB updates & transmission solenoid strategy updates. 

 

While you're there, have them also check for a recall on your car (NHTSA 20V-550) which checks for loose bolts on the start/stop accumulator. If not fixed, it can cause fluid leaks and eventually transmission failure.

 

Can't speculate on the cost, but they "may" be covered under the New Vehicle Limited Warranty (or an ESP).