E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > E46 BMW > General E46 Forum

General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 03-09-2011, 11:15 AM   #1
alpine325coupe
Registered User
 
Join Date: Dec 2010
Location: Bethpage NY
Posts: 692
My Ride: 2004 M3 SG/IR
Car starts weak then immediately stalls? HELP!

There have been a few times over the past couple months where I start the car and it stalls out. When it starts, the RPM does not jump as high as normal. It only reaches about 1000 rpm and then drops down to zero.

Today it happened multiple times. I could not get the car started after about 10 or so tries.

Also, one time when it did start and drive, it would not go over 20mph. When I tried to accelerate my speed and rpm did not respond. Car then stalled out.

Does anyone have any ideas to why this is happening?

Thanks in advance
alpine325coupe is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 03-09-2011, 11:20 AM   #2
sladha
Registered User
 
Join Date: Aug 2003
Location: nj
Posts: 749
My Ride: 330ci|ActiveHybrid7
could be due to a dirty MAF? clean the mass air flow sensor that may help. you can get the spray at an autozone
__________________
'01 TiAg 330Ci - Modded
'12 ActiveHybrid7
sladha is offline   Reply With Quote
Old 03-09-2011, 11:26 AM   #3
RobbSpeed
Registered User
 
Join Date: Aug 2004
Location: Orlando, FL
Posts: 81
My Ride: 2001 330ci
and also check out the two air boots (upper & lower) that connect from the MAF to the throttle body. If you've never had them replaced before, I bet at least one of them has cracks.
__________________
RobbSpeed is offline   Reply With Quote
Old 03-09-2011, 01:06 PM   #4
Hukerfaker
Registered User
 
Join Date: Sep 2010
Location: Croatia
Posts: 319
My Ride: My wife.
Definitely sounds like faulty/dirty/loosely connected maf.
__________________
Hukerfaker is offline   Reply With Quote
Old 03-09-2011, 01:08 PM   #5
alpine325coupe
Registered User
 
Join Date: Dec 2010
Location: Bethpage NY
Posts: 692
My Ride: 2004 M3 SG/IR
Thanks for the help guy! I was searching around and found a cleaning product available at local auto retailers (CRC Mass Air Flow Sensor Cleaner). I'm going to give it a shot this evening or tomorrow
alpine325coupe is offline   Reply With Quote
Old 03-09-2011, 01:09 PM   #6
Eliott's-BMW
Registered User
 
Eliott's-BMW's Avatar
 
Join Date: Oct 2008
Location: TX-DFW
Posts: 1,099
My Ride: E46 3-Pedal Mafia
Do you have check engine light?
__________________
Who has the skills?
e30 project

"May GOD grant you DOUBLE the amount you wish upon me!"

Last edited by Eliott's-BMW; 03-09-2011 at 01:38 PM.
Eliott's-BMW is offline   Reply With Quote
Old 03-09-2011, 01:10 PM   #7
brosive05
Registered User
 
Join Date: Aug 2010
Location: East Lansing, MI
Posts: 603
My Ride: 01 325 & 94 ZR1
02 sensor possibly?
__________________
Student during the day, driver at night.
brosive05 is offline   Reply With Quote
Old 03-09-2011, 01:10 PM   #8
alpine325coupe
Registered User
 
Join Date: Dec 2010
Location: Bethpage NY
Posts: 692
My Ride: 2004 M3 SG/IR
Yes. Have had check engine light on for about 5k miles. My mechanic told me its prob just a sensor and wasn't worth the money to fix
alpine325coupe is offline   Reply With Quote
Old 03-09-2011, 01:12 PM   #9
brosive05
Registered User
 
Join Date: Aug 2010
Location: East Lansing, MI
Posts: 603
My Ride: 01 325 & 94 ZR1
I have the same problem too. Where my RPM's fluctuate, and stalls quite frequently
__________________
Student during the day, driver at night.
brosive05 is offline   Reply With Quote
Old 03-09-2011, 01:13 PM   #10
alpine325coupe
Registered User
 
Join Date: Dec 2010
Location: Bethpage NY
Posts: 692
My Ride: 2004 M3 SG/IR
sorry to hear that. how many miles do you have on your car? i just hit 150k
alpine325coupe is offline   Reply With Quote
Old 03-09-2011, 01:15 PM   #11
Eliott's-BMW
Registered User
 
Eliott's-BMW's Avatar
 
Join Date: Oct 2008
Location: TX-DFW
Posts: 1,099
My Ride: E46 3-Pedal Mafia
Quote:
Originally Posted by alpine325coupe View Post
Yes. Have had check engine light on for about 5k miles. My mechanic told me its prob just a sensor and wasn't worth the money to fix
WTF??? get another mechanic and go to autozone and get the codes from the check engine light, now!
__________________
Who has the skills?
e30 project

"May GOD grant you DOUBLE the amount you wish upon me!"

Last edited by Eliott's-BMW; 03-09-2011 at 01:17 PM.
Eliott's-BMW is offline   Reply With Quote
Old 03-09-2011, 01:22 PM   #12
Broach><330
Registered User
 
Join Date: Feb 2010
Location: Clemson, SC
Posts: 731
My Ride: 330CI -E30 325 (S52)
Just a suggestion... It could be you're vanos seals ive been "told" that when they start getting bad you're cold starts will start getting way out of whack.. as in the whole car shaking, sputtering, misfiring and such.. its kind of a pain to do though, if you mess up the timing you more than likely will blow you're engine.
__________________


High-line catback
Kosei K1's
Headers
3.15 Differential
Koni FSD, eibach sports
AA software
205k (9/16/13)

E30 S52B32 100,xxx
5spd ZF, JB LW fly, Megan Coils, OBD1 conv. Mishimoto with low temp stat, TRM 15x8, Black vinyl sport seats, MOMO mod 08, 2:93 LSD, Custom single 2.5" exhaust, SS headers, M3 rack, basically new everything on driveline.
Broach><330 is offline   Reply With Quote
Old 03-09-2011, 01:24 PM   #13
alpine325coupe
Registered User
 
Join Date: Dec 2010
Location: Bethpage NY
Posts: 692
My Ride: 2004 M3 SG/IR
The car was warm when the stalling was happening. And during this fiasco, the car was idling very rough
alpine325coupe is offline   Reply With Quote
Old 03-09-2011, 01:24 PM   #14
Eliott's-BMW
Registered User
 
Eliott's-BMW's Avatar
 
Join Date: Oct 2008
Location: TX-DFW
Posts: 1,099
My Ride: E46 3-Pedal Mafia
Quote:
Originally Posted by Broach><330 View Post
Just a suggestion... It could be you're vanos seals ive been "told" that when they start getting bad you're cold starts will start getting way out of whack.. as in the whole car shaking, sputtering, misfiring and such.. its kind of a pain to do though, if you mess up the timing you more than likely will blow you're engine.
You won't mess up the timing because you don't even have to remove the timing chain to change the VANOS seals...
__________________
Who has the skills?
e30 project

"May GOD grant you DOUBLE the amount you wish upon me!"
Eliott's-BMW is offline   Reply With Quote
Old 03-09-2011, 01:26 PM   #15
Eliott's-BMW
Registered User
 
Eliott's-BMW's Avatar
 
Join Date: Oct 2008
Location: TX-DFW
Posts: 1,099
My Ride: E46 3-Pedal Mafia
Quote:
Originally Posted by alpine325coupe View Post
The car was warm when the stalling was happening. And during this fiasco, the car was idling very rough
I'm guessing it could be a cam position sensor but go get the codes from the ECU first, then tells us what they are...
__________________
Who has the skills?
e30 project

"May GOD grant you DOUBLE the amount you wish upon me!"
Eliott's-BMW is offline   Reply With Quote
Old 03-09-2011, 01:27 PM   #16
Broach><330
Registered User
 
Join Date: Feb 2010
Location: Clemson, SC
Posts: 731
My Ride: 330CI -E30 325 (S52)
[QUOTE=Eliott's-BMW;12902217]You won't mess up the timing because you don't even have to remove the timing chain to change the VANOS seals...[/QUOTE/]

yeah but if a noob gets in there the possibilities are endless..( NOT refering to you or the OP)
__________________


High-line catback
Kosei K1's
Headers
3.15 Differential
Koni FSD, eibach sports
AA software
205k (9/16/13)

E30 S52B32 100,xxx
5spd ZF, JB LW fly, Megan Coils, OBD1 conv. Mishimoto with low temp stat, TRM 15x8, Black vinyl sport seats, MOMO mod 08, 2:93 LSD, Custom single 2.5" exhaust, SS headers, M3 rack, basically new everything on driveline.
Broach><330 is offline   Reply With Quote
Old 03-10-2011, 11:13 AM   #17
alpine325coupe
Registered User
 
Join Date: Dec 2010
Location: Bethpage NY
Posts: 692
My Ride: 2004 M3 SG/IR
So guys, I got the spray from autozone and just cleaned the MAF sensor. When I started the car, it started pretty strong, but then rpm began to wiggle between about 600-800 rmp. Sat and watched it for about 10-20 seconds and rpm began to fall, engine sounded weak, and the car stalled.......not sure what its called, but the air boot (as referred by robbspeed) connecting to the MAF had a few minor cracks and then a very generous crack right before the rear clamp. Is this causing the stalls? I'll look for the part number but if anyone can help me out it would be much appreciated
alpine325coupe is offline   Reply With Quote
Old 03-10-2011, 04:21 PM   #18
vumuudar
Registered User
 
Join Date: Mar 2011
Location: Kentucky
Posts: 55
My Ride: 330CI 2004
How much gas do you have in the tank? It could be two things imo. The fuel pump or the sucking jet pump.
vumuudar is online now   Reply With Quote
Old 03-10-2011, 04:22 PM   #19
alpine325coupe
Registered User
 
Join Date: Dec 2010
Location: Bethpage NY
Posts: 692
My Ride: 2004 M3 SG/IR
i think i have more than a half a tank. im about to order a new intake boot. with the giant cracks im sure its leaking like crazy
alpine325coupe is offline   Reply With Quote
Old 03-10-2011, 04:29 PM   #20
jdstrickland
Registered User
 
Join Date: Apr 2010
Location: Murrieta, CA
Posts: 7,160
My Ride: '94 325iC & '00 323i
Quote:
Originally Posted by alpine325coupe View Post
Yes. Have had check engine light on for about 5k miles. My mechanic told me its prob just a sensor and wasn't worth the money to fix
It's time to shoot that mechanic, then throw his lifeless body off of an overpass.

The problem is that you report that he said, "probably." Possibly is a better word, but if the light is on, then there is a clue as to why it does not run. And since the car does not run, then you cannot fix it without knowing what the code is, and since it is not running, then it is not something that can be ignored.

I would suggest that you not spend another dime on this until you know what the codes are. Well, spend one dime, have the codes read. Buy a scan tool and read them yourself. The scan tool will pay for itself the second time you have to pull codes.
jdstrickland is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Censor is ON





All times are GMT -5. The time now is 10:11 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use