Car sputters under moderate throttle (HPFP issue?)

Cpatel · 12-20-2019, 01:29 PM

Around last week, under heavy to moderate acceleration, the car sputters/lags. No CEL is thrown and when I read codes using bootmod3 I don't see any misfire codes or anything like that.

I've been reading around and it may look like a HPFP issue.
Can anyone chime in on this?

rjd_F30 · 12-21-2019, 09:22 AM

I used to have a similar issue after flashes and adaptation resets, and it has since gone away. In my case, I think it was an adaptations issue, as it hasn't happened after I've driven enough to let the car adapt.

D041987 · 12-25-2019, 01:21 AM

This usually is a typical sign of bad plugs. Check your gap on the plugs and/or replace if you are over 70K. Plugs should be done every 40K to 50K MAX. Coils should be changed out around 90K to 100K.

Are you tuned?

If tuned for stage 1. Gap the plugs to .025 -.026
If tuned for stage 2. Gap the plugs to .022 -.023

rjd_F30 · 12-27-2019, 09:21 AM

Quote:

Originally Posted by D041987

This usually is a typical sign of bad plugs. Check your gap on the plugs and/or replace if you are over 70K. Plugs should be done every 40K to 50K MAX. Coils should be changed out around 90K to 100K.

Are you tuned?

If tuned for stage 1. Gap the plugs to .025 -.026
If tuned for stage 2. Gap the plugs to .022 -.023

That's what I though when I had this issue, so I changed my plugs out and gapped them appropriately and it made no change.

floridaorange · 12-27-2019, 11:43 AM

try unplugging your MAF.

you also might have carbon build up in your throttle housing. look into CRC cleaner.

JoeyF30 · 12-31-2019, 07:27 AM

You need to reset your adaptation, I was like you, plugs coils air filter etc. nothing, I'm getting a BMS Pedal Tuner soon and bypassing the stupid drive by wire + adapt system, it sucks. I need to do this reset at least once a week.

1N54E92 · 01-06-2020, 06:51 PM

My car does this , just dropped it off at the shop. Idles fine , revs Fine in Park but when driving , moderate acceleration will make the engine sputter and make “farting” noise

1N54E92 · 01-11-2020, 04:04 PM

Update : on my car it was the ignition coil which was replaced few months ago . Check your coils

NicksN20F30 · 01-20-2020, 03:41 PM

I had stuttering under the same conditions and did everything others did, coils, plugs, checked everything and also thought it could have been a bad fuel pump/ clogged fuel filter. Ended up changing the trans fluid (I have an 8AT) and it was because bad fluid.

Not sure if you are auto and also what mileage you're at, but if you're past 50k, I'd highly recommend it.

After changing the fluid, all stuttering and hesitations went away. Shop that changed it (German specialist) said that the fluid was very dirty and I'll notice a big difference. He was correct.

BMW claims it's a "lifetime fluid" but ZF (transmission manufacturer) does not say that and advices it should be changed every 50k miles.

Cpatel · 01-23-2020, 01:27 PM

Ok here is an update:

I stopped using Costco and Arco gasoline (91 octane) and I've only been using Chevron, Mobil, or 76 and the entire problem went away.

What does this mean?

m95roadster · 01-23-2020, 02:30 PM

Quote:

Originally Posted by Cpatel

Around last week, under heavy to moderate acceleration, the car sputters/lags. No CEL is thrown and when I read codes using bootmod3 I don't see any misfire codes or anything like that.

I've been reading around and it may look like a HPFP issue.
Can anyone chime in on this?

My car had stuttering/surging issues at 3/4 or full throttle acceleration starting around 5k rpm and above.

Plugs were changed, used different gas and running stock boost. Still had the problem.

A few weeks later I brought the car to the dealer due to a wastegate rattle. They replaced the turbo and HPFP (said it was making noise) and the problem disappeared. I don't know which component fixed the issue, but I'm leaning toward the HPFP.

WaleeF30 · 01-23-2020, 04:02 PM

Quote:

Originally Posted by Cpatel

Ok here is an update:

I stopped using Costco and Arco gasoline (91 octane) and I've only been using Chevron, Mobil, or 76 and the entire problem went away.

What does this mean?

Maybe fuel injectors were dirty.

Try dumping a Techron fuel system cleaner in your tank the next time you need to fill up gas and use 93 octane if available.

Cpatel · 01-30-2020, 04:59 PM

Update: I was using techron complete fuel system cleaner since the issue started, didn't do much.

Two days ago while I was driving, the car started shaking, drivetrain malfunction notification appeared and the check engine light came on. Read the codes using bootmod3 and it was a misfire on cylinder 4.

Went to a mechanic and it was diagnosed as needing new coils and injectors. This is covered in California under the SULEV warranty and the dealer will fix it for free. Car is in the shop currently. Got a 2019 G20 330i as a loaner. The technology in the car is really nice, the drive is WAYYYYY smoother than the f30. Steering is really nice as well. This car is bone stock and the power deliver is smooth as fuck but on WOT its not the same feel as the f30. Great car though.

12-20-2019, 01:29 PM	#1
Cpatel Private First Class 40 Rep 177 Posts Drives: N26 328i Join Date: Oct 2018 Location: USA iTrader: (0)	Car sputters under moderate throttle (HPFP issue?) Around last week, under heavy to moderate acceleration, the car sputters/lags. No CEL is thrown and when I read codes using bootmod3 I don't see any misfire codes or anything like that. I've been reading around and it may look like a HPFP issue. Can anyone chime in on this?
	Appreciate 0 Tweet Quote

12-21-2019, 09:22 AM	#2
rjd_F30 Brigadier General 2000 Rep 3,679 Posts Drives: 2013 335i 6MT Join Date: Jun 2017 Location: New Jersey iTrader: (0)	I used to have a similar issue after flashes and adaptation resets, and it has since gone away. In my case, I think it was an adaptations issue, as it hasn't happened after I've driven enough to let the car adapt. __________________ Instagram: rjd_f30 \| Current: EBII 2013 335i 6MT RWD & Sprint Blue 2008 Audi RS4 \| Retired: 2013 328i, 2000 XTerra, 2022 Civic Si \|
	Appreciate 0 Quote

12-25-2019, 01:21 AM	#3
D041987 Big Turbo Boys N Girls 327 Rep 579 Posts Drives: 2012 328I 6speed Join Date: Apr 2016 Location: Lynnwood, WA iTrader: (0)	This usually is a typical sign of bad plugs. Check your gap on the plugs and/or replace if you are over 70K. Plugs should be done every 40K to 50K MAX. Coils should be changed out around 90K to 100K. Are you tuned? If tuned for stage 1. Gap the plugs to .025 -.026 If tuned for stage 2. Gap the plugs to .022 -.023 __________________ 2012 F30: G25-660 Bottom Mount Mani+ DP+ Intake, CSF FMIC, VRSF CP, Walbro 450 LPFP, PR Injection with AIC 4, S63TU Injectors, Tuned with BM3, ZF Race 4 Puck and Non SSA Pressure plate, Catless, 3.5" Quad Muffler, Custom Valved Bilstein B8 + H&R SS. Max 456 WHP - 452 WTRQ. Currently tuned down to 434 WHP and 362 WTRQ to save the rods.
	Appreciate 2 Cpatel39.50 waxwing_f311.50 Quote

12-31-2019, 07:27 AM	#6
JoeyF30 Private First Class 20 Rep 162 Posts Drives: BMW 2013 328i xDrive N26 Join Date: Dec 2019 Location: Iselin , NJ iTrader: (0)	You need to reset your adaptation, I was like you, plugs coils air filter etc. nothing, I'm getting a BMS Pedal Tuner soon and bypassing the stupid drive by wire + adapt system, it sucks. I need to do this reset at least once a week.
	Appreciate 1 Cpatel39.50 Quote

01-06-2020, 06:51 PM	#7
1N54E92 Colonel 81 Rep 2,046 Posts Drives: BSM F30 M-Sport Join Date: Jul 2007 Location: Mid-Atlantic, USA iTrader: (4)	My car does this , just dropped it off at the shop. Idles fine , revs Fine in Park but when driving , moderate acceleration will make the engine sputter and make “farting” noise
	Appreciate 0 Quote

01-11-2020, 04:04 PM	#8
1N54E92 Colonel 81 Rep 2,046 Posts Drives: BSM F30 M-Sport Join Date: Jul 2007 Location: Mid-Atlantic, USA iTrader: (4)	Update : on my car it was the ignition coil which was replaced few months ago . Check your coils
	Appreciate 0 Quote

01-20-2020, 03:41 PM	#9
NicksN20F30 Private 68 Rep 96 Posts Drives: 2013 BMW 328i xDrive Join Date: Feb 2018 Location: New Jersey iTrader: (0) Garage List 2013 BMW 328i Xdrive [0.00]	I had stuttering under the same conditions and did everything others did, coils, plugs, checked everything and also thought it could have been a bad fuel pump/ clogged fuel filter. Ended up changing the trans fluid (I have an 8AT) and it was because bad fluid. Not sure if you are auto and also what mileage you're at, but if you're past 50k, I'd highly recommend it. After changing the fluid, all stuttering and hesitations went away. Shop that changed it (German specialist) said that the fluid was very dirty and I'll notice a big difference. He was correct. BMW claims it's a "lifetime fluid" but ZF (transmission manufacturer) does not say that and advices it should be changed every 50k miles. __________________ 2013 BMW 328i xDrive Bootmod3 stg. 2 FBO
	Appreciate 0 Quote

01-23-2020, 01:27 PM	#10
Cpatel Private First Class 40 Rep 177 Posts Drives: N26 328i Join Date: Oct 2018 Location: USA iTrader: (0)	Ok here is an update: I stopped using Costco and Arco gasoline (91 octane) and I've only been using Chevron, Mobil, or 76 and the entire problem went away. What does this mean?
	Appreciate 0 Quote

01-30-2020, 04:59 PM	#13
Cpatel Private First Class 40 Rep 177 Posts Drives: N26 328i Join Date: Oct 2018 Location: USA iTrader: (0)	Update: I was using techron complete fuel system cleaner since the issue started, didn't do much. Two days ago while I was driving, the car started shaking, drivetrain malfunction notification appeared and the check engine light came on. Read the codes using bootmod3 and it was a misfire on cylinder 4. Went to a mechanic and it was diagnosed as needing new coils and injectors. This is covered in California under the SULEV warranty and the dealer will fix it for free. Car is in the shop currently. Got a 2019 G20 330i as a loaner. The technology in the car is really nice, the drive is WAYYYYY smoother than the f30. Steering is really nice as well. This car is bone stock and the power deliver is smooth as fuck but on WOT its not the same feel as the f30. Great car though.
	Appreciate 0 Quote