2009 - E90 - 320i

StiffUpperLens · 02-10-2020, 11:30 PM

Hi all so i have a conundrum that's really starting to eat at me.

My car stuuters on first start of the day but always starts.... and then any subsiquent start its perfect.

And lately its been running out of power above 4,500rpm. At around 5000, it simply stops accelerating. It sometimes stutters, sometimes hesitates, always flat up there.

I know these engines are gutless but somethings wrong, its significantly down on power.

Mid range is pretty good, low rpm probably a bit flat too.

I recently replaced the plugs, serviced it with new air filter. I also put some injector cleaner in it today which won't have had a chance to make any difference yet.

I run 95RON, sometimes 98 - never anything lower.

What might be the potential causes of this sort of problem?

yupetc · 02-11-2020, 09:43 AM

VANOS actuator solenoid, eccentric shaft sensor, and ignition coils. You don't offer much details, but base on what I'm seeing, those will be the parts I'd suspect.

StiffUpperLens · 02-11-2020, 11:12 PM

Quote:

Originally Posted by yupetc

VANOS actuator solenoid, eccentric shaft sensor, and ignition coils. You don't offer much details, but base on what I'm seeing, those will be the parts I'd suspect.

OK, thanks for the suggestions. I'll look into them.

I'm not sure what else I can provide?

02-10-2020, 11:30 PM	#1
StiffUpperLens Private 6 Rep 56 Posts Drives: E90 330D Lci Join Date: Apr 2019 Location: Melbourne iTrader: (0)	2009 - E90 - 320i - big flat spot, high RPM Hi all so i have a conundrum that's really starting to eat at me. My car stuuters on first start of the day but always starts.... and then any subsiquent start its perfect. And lately its been running out of power above 4,500rpm. At around 5000, it simply stops accelerating. It sometimes stutters, sometimes hesitates, always flat up there. I know these engines are gutless but somethings wrong, its significantly down on power. Mid range is pretty good, low rpm probably a bit flat too. I recently replaced the plugs, serviced it with new air filter. I also put some injector cleaner in it today which won't have had a chance to make any difference yet. I run 95RON, sometimes 98 - never anything lower. What might be the potential causes of this sort of problem?
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02-11-2020, 09:43 AM	#2
yupetc Captain 390 Rep 661 Posts Drives: 2015 X535i Join Date: Feb 2013 Location: Houston, TX iTrader: (0)	VANOS actuator solenoid, eccentric shaft sensor, and ignition coils. You don't offer much details, but base on what I'm seeing, those will be the parts I'd suspect. __________________ 2015 X535i - CP Piston, Manley Rod, ACL/King bearings, MILVs VRSF full charge Pipe, Wagner FMIC, Hybrid Turbo, MHD2+ VRSF DP, UR Front/Rear Sway Bars, Eibach springs, Bilstein B6 2015 MINI COOPER - Mahle Pistons, Max Rods, BMS intake, CTS charge pipe, Wagner Intercooler, ByteTronik Tune, VRSF DP 2017 540i - MHD2+, VRSF DP, TU Pump
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