Jumpy idle at stop

ps82k · 02-13-2006, 06:06 PM

i have 2001 325i.
recently, the rpm goes up and down at idle when i stop.
it seems to go away when heater or AC's on....
maybe it idles too low?
about 2 years ago, dealer replaced the cam censor because my car kept stalling on middle of streets. can this be the problem?
now i could hear some kind of air blowing noise from engine. i had K&N filter, and sometimes i put too much oil after cleaning the filter. maybe i need to clean intake....
i started having idle problem when i started my car in cold weather and servince engine soon light comes on. it goes away when weather gets warmer....could this cause the problem?
i called BMW and asked them if there was any recall on coils. they said my car is not on the list....should i replace them anyway?
I know i am being very annoying....sorry but i really want to solve these problems and drive my baby without any concerns..
PLEASE SOMEBODY HELP ME!!!!!!!!!!

DTU · 02-13-2006, 08:05 PM

I have read that a lot of people with CAI have this problem after a while.
I believe the oil in the filters kinda clog up the MAF sensor after some time.
I would first see if that is the problem since it a an easy fix.

Good luck

silverbmw330 · 02-13-2006, 11:00 PM

this is a shot in the dark but you car's fuel injectors might be somewhat clogged. you can get some fuel injector cleaner to see if it helps.

Mike Benvo · 02-14-2006, 09:32 AM

Could be your ICV, your injectors, spark plugs, vanos unit, or coils.

(2000th post???! YES!)

MidnightBeemer · 02-14-2006, 09:40 AM

Hey,

I am having the same exact problem with my car. i have a 2000 328i. In cold weather when I first start it...it will be fine for a min or so the the RPMs start to drop and come back. I have no idea why this problem occurs. It doesn't bother me too much but wish it didnt happen. I don't get any check engine light. I already went through the part where my cam shaft had to be replaced because my car would stall when driving

MidnightBeemer · 02-14-2006, 09:41 AM

Hey,

I am having the same exact problem with my car. i have a 2000 328i. In cold weather when I first start it...it will be fine for a min or so the the RPMs start to drop and come back. I have no idea why this problem occurs. It doesn't bother me too much but wish it didnt happen. I don't get any check engine light. I already went through the part where my cam shaft had to be replaced because my car would stall when driving

MidnightBeemer · 02-14-2006, 09:42 AM

Also, can you tell me what a MAF sensor is and how I would go about cleaning it. I'll take that step to see if it resolves my issue

ps82k · 02-14-2006, 09:56 AM

thank you very much!!!! i will try this today!!!!!!

02SilverM3 · 02-14-2006, 02:17 PM

Please do some research on the M3 forum. The problem is common and easy to solve. Bet each of you have a CAI system. The air needs to be cleaned or straightened. Fetch your old air box and remove the plastic grid and install it between MAS and air filter. Clean MAS with CRC electrical contact cleaner. Get some software to get the most out of your system. Ref. www.madrussian.com

ps82k · 02-14-2006, 07:04 PM

upgrade software? do i have to go back to dealer to get it done?
how much will they charge? what kind of difference does it make?
can i clean air system by spraying some cleaner from autozone?

thank you for your help!

UnBreakable · 02-14-2006, 07:17 PM

Do a

this problem has been discussed before...
heres the link anyways..

http://forum.e46fanatics.com/showthr...t=stalls+start

ps82k · 02-15-2006, 12:37 PM

I cleaned MAF sensor last night, and the rpm stopped jumping.

However, the car still shakes little when i put the gear to D. it completly, idles smoothly when the gear is in P. can it be a tranny problem or should i bring it to dealer(they said they charge 150bux to look at my car.) can 2001 325i have a COIL problem?
How can i fix this problem?

Thanks

02-13-2006, 06:06 PM	#1
ps82k Registered User Join Date: Sep 2003 Location: new jersey Posts: 27 My Ride: 2001 325i w s/p View My Garage	Jumpy idle at stop i have 2001 325i. recently, the rpm goes up and down at idle when i stop. it seems to go away when heater or AC's on.... maybe it idles too low? about 2 years ago, dealer replaced the cam censor because my car kept stalling on middle of streets. can this be the problem? now i could hear some kind of air blowing noise from engine. i had K&N filter, and sometimes i put too much oil after cleaning the filter. maybe i need to clean intake.... i started having idle problem when i started my car in cold weather and servince engine soon light comes on. it goes away when weather gets warmer....could this cause the problem? i called BMW and asked them if there was any recall on coils. they said my car is not on the list....should i replace them anyway? I know i am being very annoying....sorry but i really want to solve these problems and drive my baby without any concerns.. PLEASE SOMEBODY HELP ME!!!!!!!!!!

02-13-2006, 08:05 PM	#2
DTU Registered User Join Date: Jan 2006 Location: Minnesota Posts: 157 My Ride: 2000 323I View My Garage	Check your MAF sensor I have read that a lot of people with CAI have this problem after a while. I believe the oil in the filters kinda clog up the MAF sensor after some time. I would first see if that is the problem since it a an easy fix. Good luck

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02-13-2006, 11:00 PM	#3
silverbmw330 Registered User Join Date: Jan 2006 Location: . Posts: 146 My Ride: . View My Garage	this is a shot in the dark but you car's fuel injectors might be somewhat clogged. you can get some fuel injector cleaner to see if it helps.

02-14-2006, 09:32 AM	#4
Mike Benvo Past Site Sponsor Join Date: Sep 2003 Location: Los Angeles Posts: 2,720 My Ride: Dinan E60 ///M5 View My Garage	Could be your ICV, your injectors, spark plugs, vanos unit, or coils. (2000th post???! YES!)

02-14-2006, 09:40 AM	#5
MidnightBeemer Registered User Join Date: Mar 2005 Location: New Jersey Posts: 19 My Ride: BMW 328i View My Garage	Hey, I am having the same exact problem with my car. i have a 2000 328i. In cold weather when I first start it...it will be fine for a min or so the the RPMs start to drop and come back. I have no idea why this problem occurs. It doesn't bother me too much but wish it didnt happen. I don't get any check engine light. I already went through the part where my cam shaft had to be replaced because my car would stall when driving

02-14-2006, 09:41 AM	#6
MidnightBeemer Registered User Join Date: Mar 2005 Location: New Jersey Posts: 19 My Ride: BMW 328i View My Garage	Hey, I am having the same exact problem with my car. i have a 2000 328i. In cold weather when I first start it...it will be fine for a min or so the the RPMs start to drop and come back. I have no idea why this problem occurs. It doesn't bother me too much but wish it didnt happen. I don't get any check engine light. I already went through the part where my cam shaft had to be replaced because my car would stall when driving

02-14-2006, 09:42 AM	#7
MidnightBeemer Registered User Join Date: Mar 2005 Location: New Jersey Posts: 19 My Ride: BMW 328i View My Garage	Also, can you tell me what a MAF sensor is and how I would go about cleaning it. I'll take that step to see if it resolves my issue

02-14-2006, 09:56 AM	#8
ps82k Registered User Join Date: Sep 2003 Location: new jersey Posts: 27 My Ride: 2001 325i w s/p View My Garage	thank you very much!!!! i will try this today!!!!!!

02-14-2006, 02:17 PM	#9
02SilverM3 Registered User Join Date: Dec 2005 Location: Richmond, Virginia Posts: 143 My Ride: 02 m3 and 05 x3 View My Garage	Please do some research on the M3 forum. The problem is common and easy to solve. Bet each of you have a CAI system. The air needs to be cleaned or straightened. Fetch your old air box and remove the plastic grid and install it between MAS and air filter. Clean MAS with CRC electrical contact cleaner. Get some software to get the most out of your system. Ref. www.madrussian.com

02-14-2006, 07:04 PM	#10
ps82k Registered User Join Date: Sep 2003 Location: new jersey Posts: 27 My Ride: 2001 325i w s/p View My Garage	upgrade software? do i have to go back to dealer to get it done? how much will they charge? what kind of difference does it make? can i clean air system by spraying some cleaner from autozone? thank you for your help!

02-14-2006, 07:17 PM	#11
UnBreakable Registered User Join Date: Dec 2005 Location: NY Posts: 444 My Ride: OB E46 328i View My Garage	Do a this problem has been discussed before... heres the link anyways.. http://forum.e46fanatics.com/showthr...t=stalls+start

02-15-2006, 12:37 PM	#12
ps82k Registered User Join Date: Sep 2003 Location: new jersey Posts: 27 My Ride: 2001 325i w s/p View My Garage	I cleaned MAF sensor last night, and the rpm stopped jumping. However, the car still shakes little when i put the gear to D. it completly, idles smoothly when the gear is in P. can it be a tranny problem or should i bring it to dealer(they said they charge 150bux to look at my car.) can 2001 325i have a COIL problem? How can i fix this problem? Thanks