F10 550I LCI thudding when accelerating problem

macho_f10 · 03-29-2024, 08:55 AM

Hello, first post here.
I have this issue with my BMW 550i LCI f10 N63tu with 100,000km.
When accelerating 75% or 100% in sport mode it feels "chuggy". Like every ⅓ of a second, it thuds and boosts or holds back the acceleration. Almost as if the wheels are slipping and gaining traction but that definitely not the case.

It feels sluggish when doing this but there is a noticeable jerking feeling like thug thug thug thug thug faster and faster which makes me accelerate slowly. I know what it feels like to floor the car and when this happens it's definitely not going as fast as it should. It feels almost like a build-up of speed and acceleration and it feels similar to changing gears really fast but the rpm stays within one gear and the changes are fast or a single gear change over and over (the sensation of the car jolting or slowing). The car slowly stops accelerating with each thud then goes back to accelerating within a 3rd of a second..

My dad's 2014 srt jeep 6.4L v8 had a similar thudding thugging laggy acceleration sound and feeling and it turned out to be the dif. Different cars and different problems maybe.

Also, another issue I have is when I'm either semi-flooring it like 50%-100% and reach 150 km/h (on a private track ofc) it says "Drivetrain. possible to Continue the journey, see a BMW service". I feel these are two unrelated problems though. Has anyone had a similar problem or know what might be going on?

Thank you.

kohsin · 04-02-2024, 11:00 AM

I had the similar issues with my N63. Eventually, it threw the code. Miss fire.
I replaced the engine filters and spark plugs, the issues went away.
At the time, the filters were more than one year and the plugs were more than 30k miles .
Start from there if yours were installed for a while.

03-29-2024, 08:55 AM	#1
macho_f10 Macho_F10 0 Rep 1 Posts Drives: BMW F10 550i LCI Join Date: Mar 2024 Location: Australia iTrader: (0) Garage List 2014 BMW F10 550I LCI [0.00]	F10 550I LCI thudding when accelerating problem Hello, first post here. I have this issue with my BMW 550i LCI f10 N63tu with 100,000km. When accelerating 75% or 100% in sport mode it feels "chuggy". Like every ⅓ of a second, it thuds and boosts or holds back the acceleration. Almost as if the wheels are slipping and gaining traction but that definitely not the case. It feels sluggish when doing this but there is a noticeable jerking feeling like thug thug thug thug thug faster and faster which makes me accelerate slowly. I know what it feels like to floor the car and when this happens it's definitely not going as fast as it should. It feels almost like a build-up of speed and acceleration and it feels similar to changing gears really fast but the rpm stays within one gear and the changes are fast or a single gear change over and over (the sensation of the car jolting or slowing). The car slowly stops accelerating with each thud then goes back to accelerating within a 3rd of a second.. My dad's 2014 srt jeep 6.4L v8 had a similar thudding thugging laggy acceleration sound and feeling and it turned out to be the dif. Different cars and different problems maybe. Also, another issue I have is when I'm either semi-flooring it like 50%-100% and reach 150 km/h (on a private track ofc) it says "Drivetrain. possible to Continue the journey, see a BMW service". I feel these are two unrelated problems though. Has anyone had a similar problem or know what might be going on? Thank you.
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04-02-2024, 11:00 AM	#2
kohsin Private First Class 49 Rep 171 Posts Drives: 2013 F10 550ix Join Date: Apr 2015 Location: Illinois iTrader: (0)	I had the similar issues with my N63. Eventually, it threw the code. Miss fire. I replaced the engine filters and spark plugs, the issues went away. At the time, the filters were more than one year and the plugs were more than 30k miles . Start from there if yours were installed for a while.
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