rough idle at start

yeung330xi · 06-04-2008, 08:46 AM

i am experiencing some rough idle when i start the car. The rpm needle increases and decreases quite a bit. This only occurs when I start the car and not during stops when I am driving.

Another problem I am experiencing when I start the car, and I move it from P to D or R the car even with my foot firmly on the break the car will have like small rough spurt of acceleration. What is wrong???

I also searched the forums but no one seems to be experencing the same spurt of acceleration. I just want some more info before I call the dealer so they don't think I am retarded.

ALPINE6SPD · 06-04-2008, 08:49 AM

Could be bad gas with water in it or high ethenol (sp?) levels. I would drive it around a little and see if it gets any better. Did the check engine light come on or did any lights come on at all? I have never had this problem with ym 330 so I really cant help you anymore. If not I would have the dealership look at it as soon as you can.
Good luck.
Ryan

dzenno · 06-04-2008, 11:42 AM

This happened to me once with PROcede V2. I set the valet mode at 3000 rpm instead of 300 rpm and when i would turn on the car and "rev it" right away to above 3000 rpm (to disable valet) it would cause this behaviour. I just put back the valet rpm to 300rpm and never had a problem again.

GTA-335xi · 06-04-2008, 02:43 PM

same problem minus the accelerator spurt..

rough idling when i first start the car, kind of like starting the car in the dead of winter after parking the car outside for a night.. except it's june..

Brandon26pdx · 06-04-2008, 06:34 PM

That could be that fuel pump crapping out. From what I've read they often cause starting and cold idle issues when they start to go.

I'd say dealer time on both of those situations.

yeung330xi · 06-09-2008, 09:28 AM

Quote:

Originally Posted by Brandon26pdx

That could be that fuel pump crapping out. From what I've read they often cause starting and cold idle issues when they start to go.

I'd say dealer time on both of those situations.

is there a huge problem with the fuel pump on the 330s?
i thought it was more of a problem on the 335i?

Brandondad · 06-09-2008, 01:03 PM

I had a problem just like that, got worse over time and turned out to be a bad fuel injector. Took them a while to figure it out cause it only happened the first time you started the car each day.

yeung330xi · 06-09-2008, 01:51 PM

Quote:

Originally Posted by Brandondad

I had a problem just like that, got worse over time and turned out to be a bad fuel injector. Took them a while to figure it out cause it only happened the first time you started the car each day.

like with the slight accelerating?

Brandondad · 06-09-2008, 02:37 PM

Quote:

Originally Posted by yeung330xi

like with the slight accelerating?

I had the rough idle at startup, I would put my foot on the brake and shift into gear then the engine would rev up for a sec, you could feel the car want to go and then drop and continue to run rough for a few more minutes (got worse over the course of 2 weeks or so). When it first started happened it would go away after about a minute, then it became 2 minutes, then 4 etc... I was initially told bad gas, after 4 or 5 tanks of "bad" gas, they finally did a weeks worth of testing to realize it was the injector.

06-04-2008, 08:46 AM	#1
yeung330xi Jordan aka The GOAT 95 Rep 477 Posts Drives: 2006 330XI Join Date: Jan 2006 Location: Ontario, Canada iTrader: (1) Garage List 2014 528i xdrive [0.00]	rough idle at start i am experiencing some rough idle when i start the car. The rpm needle increases and decreases quite a bit. This only occurs when I start the car and not during stops when I am driving. Another problem I am experiencing when I start the car, and I move it from P to D or R the car even with my foot firmly on the break the car will have like small rough spurt of acceleration. What is wrong??? I also searched the forums but no one seems to be experencing the same spurt of acceleration. I just want some more info before I call the dealer so they don't think I am retarded. __________________ December 2002\|\| 2003 330xi Steel Grey\Premium Package\CD Changer\Harman Kardon\Rain Sensor\Automatic March 2006 \|\| 2006 330xi Black Sapphire\Automatic\20% TINT\Blacklines\CF Splitters\M3 style spoiler\MFD LED Angel Eye Kit\19" CSL reps with Falken 452\ Last edited by yeung330xi; 06-04-2008 at 08:47 AM.. Reason: added more info.
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06-04-2008, 08:49 AM	#2
ALPINE6SPD Lieutenant General 156 Rep 10,411 Posts Drives: 2010 BMW 328i Sport Join Date: Dec 2005 Location: Highland Lakes NJ iTrader: (2)	Could be bad gas with water in it or high ethenol (sp?) levels. I would drive it around a little and see if it gets any better. Did the check engine light come on or did any lights come on at all? I have never had this problem with ym 330 so I really cant help you anymore. If not I would have the dealership look at it as soon as you can. Good luck. Ryan __________________ 2010 AW e90 328i: 6 speed, Black Leather, Dark Wood trim, ZPP, ZCW, ZVP,ZSP, Nav, Xenon BMW Performance CF Rear spolier and Gloss black grills 2008 Candy White MKV GTI 2.0T 6 Speed Manul Gone 2008 AW X3 3.0si: 6 speed Returned 2006 AW e90 330i: 6 speed Dinan Stage 1 Returned
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06-04-2008, 11:42 AM	#3
dzenno Banned 273 Rep 5,876 Posts Drives: Join Date: Feb 2006 iTrader: (1)	This happened to me once with PROcede V2. I set the valet mode at 3000 rpm instead of 300 rpm and when i would turn on the car and "rev it" right away to above 3000 rpm (to disable valet) it would cause this behaviour. I just put back the valet rpm to 300rpm and never had a problem again.
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06-04-2008, 02:43 PM	#4
GTA-335xi i'm so welfare 0 Rep 61 Posts Drives: you wild Join Date: May 2008 Location: Toronto iTrader: (0) Garage List 2008 335xi [0.00]	same problem minus the accelerator spurt.. rough idling when i first start the car, kind of like starting the car in the dead of winter after parking the car outside for a night.. except it's june.. __________________ 2005 Audi A4 1.8T Quattro / Tiptronic / Brilliant Black / Convenience, Technology, Lighting / 2008 BMW 335xi / Steptronic / Alpine White / Premium, Sport, USB Integration / 35% Llumar ATX
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06-04-2008, 06:34 PM	#5
Brandon26pdx Lieutenant Colonel 28 Rep 1,938 Posts Drives: 2011 135i Join Date: Oct 2007 Location: Portland, OR iTrader: (1)	That could be that fuel pump crapping out. From what I've read they often cause starting and cold idle issues when they start to go. I'd say dealer time on both of those situations.
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06-09-2008, 01:03 PM	#7
Brandondad Enlisted Member 1 Rep 41 Posts Drives: 2007 335i Join Date: Apr 2008 Location: Chicago iTrader: (0)	I had a problem just like that, got worse over time and turned out to be a bad fuel injector. Took them a while to figure it out cause it only happened the first time you started the car each day.
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