335D Engine issues

Blackpearll · 10-21-2015, 01:50 PM

Hi guys,

Since the beginning of this year, I own a 335D (F30). Until now some known issues, but since a few weeks, the engine shows some strange behaviour. There is a high sound coming from the engine which was not present before. In addition, when I want to accelerate, the engine hesitates (feels like EGR problem). In addition, fuel consumption raised with 0.5-1l (same driving style). Does anyone know what this could be? Or experienced same problems? Next week, the car will be checked by the dealer but mostly, they will say that there is no problem ... Thank you for your help!

Grtz

Frank

oceanview · 10-28-2015, 04:42 AM

Probably BWM remotely changed the software to avoid what happend to VW

Blackpearll · 10-30-2015, 12:24 PM

Lol Oceanview. Anyway, the dealer has performed a software update, and replaced the air filter by an another type. No issues any more

stormlv · 05-12-2016, 02:34 PM

Quote:

Originally Posted by Martin80k

i have checked and this engine is working the same way as previous 335d that was suffering from a constant vacuum or boost leak, that rarely showed in diagnostics soft, and this might be the same problem. the engine will lose boost in low revs, about 25-35%, and some owners get accustomed to the lag thinking it's the way it is, because even service diagnostics won't show any errors. this has happened to me 4x already....always had to look manually for the fault and bmw service even told me it's fine and car drives fine,,,but they were wrong, there was problem always with pipes and hoses. once split and few times fitting problem....so i guess bmw didn't removed the problem obviously

Can you detail a bit the diagnostic process?
I'd curious to know.

05-12-2016, 03:02 PM

Quote:

Originally Posted by stormlv

Can you detail a bit the diagnostic process?
I'd curious to know.

i just described it in on another guys post in this section that has also performance issues here http://f30.bimmerpost.com/forums/sho....php?t=1193135, where i described it a bit.

basically, i had a vacuum leaks due to the red intercooler plastic pipe that was lose and leaking and lost power, was told by bmw service it's ok, but i knew it isn't as it had a lag that was not there before, but since it was only about 20-30% power loss it wasn't significant to notice for somebody who wasn't looking for it, so the serviceman in bmw dealership told me there is nothing wrong with the car and it drives as it should, but obviously it wasn't. i took it to the independent bmw specialists that took it apart in front of me and the charger pipe had a small hole from the constant friction with another pipe, and the leak was behind the sensor, so diagnostic never showed any problem, yet the car had one. so i would not rely on bmw mechanics because many times they only tell u what diagnostic soft tells them....
vacuum is very fragile thing, many people have issues with small vacuum hoses and actuators, but also with other pipes on these pics: i had issues with pipes number 1 and 7 on the second pic

http://www.realoem.com/bmw/enUS/part...MW-435dX&mg=11

10-21-2015, 01:50 PM	#1
Blackpearll New Member 10 Rep 16 Posts Drives: BMW 335D XDrive Join Date: Jan 2015 Location: Belgium iTrader: (0)	335D Engine issues Hi guys, Since the beginning of this year, I own a 335D (F30). Until now some known issues, but since a few weeks, the engine shows some strange behaviour. There is a high sound coming from the engine which was not present before. In addition, when I want to accelerate, the engine hesitates (feels like EGR problem). In addition, fuel consumption raised with 0.5-1l (same driving style). Does anyone know what this could be? Or experienced same problems? Next week, the car will be checked by the dealer but mostly, they will say that there is no problem ... Thank you for your help! Grtz Frank
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10-28-2015, 04:42 AM	#2
oceanview Captain 207 Rep 603 Posts Drives: 335i F31 RWD Autom. Join Date: May 2013 Location: Switzerland iTrader: (0)	Probably BWM remotely changed the software to avoid what happend to VW __________________ 335i F31 RWD in SB \|\| Powertrain: Active Autowerke Flash Tune Stage 1 \| AA Charge Pipe \| AA FMIC \| GFB DV+ \| xHD Trans-Flash \| Quaife LSD \| Cyba 3.5" Carbon tips \|\| Chassis: 20" 405M \| Wiechers Strut Bar \| Rear M-Diffusor \|\| Brakes: 18" M-Perf Brake orange 370/345 \| EBC YellowStuff pads all around \|\| Various: LED bulbs: Fog-L. front \| Turn Signal f&r \| Brake L. \| Reverse L. \| Rear L. \| Rear Fog L.
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10-30-2015, 12:24 PM	#3
Blackpearll New Member 10 Rep 16 Posts Drives: BMW 335D XDrive Join Date: Jan 2015 Location: Belgium iTrader: (0)	Lol Oceanview. Anyway, the dealer has performed a software update, and replaced the air filter by an another type. No issues any more
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