e91 320d lci 2008 rpm 1300-1900 fluctation

Bilqie188 · 04-19-2018, 05:41 PM

BMW e91 LCI
320d 2008 steptronic

I've noticed that while driving at lower speeds 40-90kmh rpm fluctuates a bit.

It only occurs at certain gas pedal position. While I slow down by 1kmh/5sec or more its steady.

While maintaining or speeding up by 1kmh/5sec it fluctuates by like 200rpm and only in range of 1300-1800rpm. Sometimes when accelerating rpm instead of going smooth it 'jumps' by 100rpm each ~two seconds, thats only when accelerating real slow. When pressing it at least bit harder its very smooth.

Worth noting its that it only happens when you feel by pressing pedal that you make engine produce power to run/maintain (but only certain range as I said), not while going downhill.

Gear changes are smooth, it drives, reverse, sport mode etc well. Doesn't jerk or anything.
On idle steady 750rpm always

Wondering if there are any other possibilites than starting off with checking torque converter

overcoil · 04-19-2018, 06:15 PM

Simple things first:
Check battery - a weak battery can mess with shifting.
Had u had any work done on car lately? oil change ?

04-19-2018, 05:41 PM	#1
Bilqie188 Banned 1 Rep 2 Posts Drives: BMW 3 Series (E90) Join Date: Apr 2018 Location: US iTrader: (0)	e91 320d lci 2008 rpm 1300-1900 fluctation BMW e91 LCI 320d 2008 steptronic I've noticed that while driving at lower speeds 40-90kmh rpm fluctuates a bit. It only occurs at certain gas pedal position. While I slow down by 1kmh/5sec or more its steady. While maintaining or speeding up by 1kmh/5sec it fluctuates by like 200rpm and only in range of 1300-1800rpm. Sometimes when accelerating rpm instead of going smooth it 'jumps' by 100rpm each ~two seconds, thats only when accelerating real slow. When pressing it at least bit harder its very smooth. Worth noting its that it only happens when you feel by pressing pedal that you make engine produce power to run/maintain (but only certain range as I said), not while going downhill. Gear changes are smooth, it drives, reverse, sport mode etc well. Doesn't jerk or anything. On idle steady 750rpm always Wondering if there are any other possibilites than starting off with checking torque converter
	Appreciate 0 Tweet Quote

04-19-2018, 06:15 PM	#2
overcoil Major General 3074 Rep 5,577 Posts Drives: M235i 6spd Join Date: Dec 2013 Location: Mid-Atlantic iTrader: (0)	Simple things first: Check battery - a weak battery can mess with shifting. Had u had any work done on car lately? oil change ?
	Appreciate 0 Quote