Help please! Rough Idle/Car dies when turned on (video included)

skekasaurus · 05-16-2011, 06:42 PM

I have this issue, and i'm just wondering what it may be. I had an O2 sensor replaced a few weeks back. Its kind of having the same symptoms, but idk if it could be related to the sensor again or something else.

Any help is much appreciated. I included a video below:

The first time I turned it on, it died almost immediately. The second time around I turned it on and immediately pressed the gas pedal. The engined rev'd, but it like hiccuped a bit. I had my foot down on the gas the whole time, I was pressing and releasing continuously it was just doing that on its own. I can some what drive it around, as long as I'm not in the lows RPM's, when it hits the lower section it starts acting like it has no gas or something.

Thank guys.

shellback · 05-17-2011, 02:52 PM

Are you pushing it off a cliff at the end of the video?
Fuel pump?
Fuel filter?

ddombrowski · 05-17-2011, 03:16 PM

First thing I always do with cars like this is to clean the idle air motor and throttle body. That fixes a majority of them, and its free. If not, then I start diagnosing.

tractioncircle · 05-18-2011, 06:59 AM

+1

Sounds like s stuck ICV. There are multiple DIY's in here on how to remove and clean the ICV. While you are at it, clean your DISA vavle and CCV too.
Here a DIY with pics from bimmerfest. Also inspect all the intake hoses for cracks leaks and clean you MAF.

http://www.bimmerfest.com/forums/sho...d.php?t=323335

InDiGlOM3 · 05-18-2011, 07:31 AM

cam/crank sensor. and sometimes this wont even throw a code.

muly · 05-18-2011, 05:51 PM

Have you tried it with the maf sensor unplugged?

tractioncircle · 05-20-2011, 09:40 AM

Check this thread.

http://forum.e46fanatics.com/showthread.php?t=773551

I've been struggling with rough idle and SES light with P1085,1083,0171,0174 codes.

The fix was a 17$ vent hose that goes from the CCV to the dipstick. Its a 20 min diy and you only need to take the Airbox out.

05-16-2011, 06:42 PM	#1
skekasaurus Registered User Join Date: May 2011 Location: San antonio Posts: 1 My Ride: e46 325i View My Garage	Help please! Rough Idle/Car dies when turned on (video included) I have this issue, and i'm just wondering what it may be. I had an O2 sensor replaced a few weeks back. Its kind of having the same symptoms, but idk if it could be related to the sensor again or something else. Any help is much appreciated. I included a video below: The first time I turned it on, it died almost immediately. The second time around I turned it on and immediately pressed the gas pedal. The engined rev'd, but it like hiccuped a bit. I had my foot down on the gas the whole time, I was pressing and releasing continuously it was just doing that on its own. I can some what drive it around, as long as I'm not in the lows RPM's, when it hits the lower section it starts acting like it has no gas or something. Thank guys. Last edited by skekasaurus; 05-16-2011 at 06:43 PM.

05-17-2011, 03:16 PM	#3
ddombrowski Registered User Join Date: Jun 2006 Location: South Florida Posts: 905 My Ride: 01 330ci 5spd View My Garage	First thing I always do with cars like this is to clean the idle air motor and throttle body. That fixes a majority of them, and its free. If not, then I start diagnosing. __________________

05-18-2011, 07:31 AM	#5
InDiGlOM3 Registered User Join Date: Jan 2006 Location: Copperas Cove Posts: 1,353 My Ride: HPF M3 stg 2.5 View My Garage	cam/crank sensor. and sometimes this wont even throw a code. __________________

05-18-2011, 05:51 PM	#6
muly Registered User Join Date: Apr 2007 Location: UK Posts: 100 My Ride: 330 sport vert View My Garage	Have you tried it with the maf sensor unplugged? __________________

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05-17-2011, 02:52 PM	#2
shellback Registered User Join Date: Jul 2009 Location: Texas Posts: 116 My Ride: BMW View My Garage	Are you pushing it off a cliff at the end of the video? Fuel pump? Fuel filter?

05-18-2011, 06:59 AM	#4
tractioncircle Registered User Join Date: Nov 2009 Location: Santa Clara, CA Posts: 17 My Ride: 02 325i View My Garage	+1 Sounds like s stuck ICV. There are multiple DIY's in here on how to remove and clean the ICV. While you are at it, clean your DISA vavle and CCV too. Here a DIY with pics from bimmerfest. Also inspect all the intake hoses for cracks leaks and clean you MAF. http://www.bimmerfest.com/forums/sho...d.php?t=323335

05-20-2011, 09:40 AM	#7
tractioncircle Registered User Join Date: Nov 2009 Location: Santa Clara, CA Posts: 17 My Ride: 02 325i View My Garage	Check this thread. http://forum.e46fanatics.com/showthread.php?t=773551 I've been struggling with rough idle and SES light with P1085,1083,0171,0174 codes. The fix was a 17$ vent hose that goes from the CCV to the dipstick. Its a 20 min diy and you only need to take the Airbox out.