Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E46 (1999 - 2006)

E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

Reply
 
Thread Tools Display Modes
  #1  
Old 02-02-2013, 02:55 PM
xpro6000 xpro6000 is offline
Registered User
Location: PA
 
Join Date: Mar 2012
Posts: 9
Mein Auto: 325XI
Weird engine problem

Hi guys

This problem sometimes happened when my engine idled but it has become worst to a point that it's happening almost all the time. I'll try to describe the problem as best as I can.

When I turn on the car cold, it runs fairly good until I give it gas and it loses power and the engine starts to sounds like it's not running on all 6 cylinders. After a while that the car runs the power gets so low that if a heel is steep I have to give it full throttle in order to get any acceleration. The coils and spark plugs were changed about 7 months a go and I tested them by unplugging each coil while the car was running and the engine sound changed as I unplugged and plugged them back in. Fuel injectors were also changed yesterday.

Sometimes when I'm driving at fairly constant speeds in the highway engine returns to normal but after giving it full throttle the problem returns and the engine loses power and feels as if it's not running on all 6 cylinders.

I have run out of ideas. I also made a video that you can hear the engine while the car was in my garage.




If you guys would know what it could be please let me know.
Reply With Quote
Advertisement
  #2  
Old 02-02-2013, 04:25 PM
SJBimmer's Avatar
SJBimmer SJBimmer is offline
Living Life At The Beach
Location: In This Place
 
Join Date: Feb 2007
Posts: 3,810
Mein Auto: 2004 325 Convertible
Have you ever changed your fuel filter? Any codes? Fuel pump making any strange noises?
Reply With Quote
  #3  
Old 02-02-2013, 04:34 PM
xpro6000 xpro6000 is offline
Registered User
Location: PA
 
Join Date: Mar 2012
Posts: 9
Mein Auto: 325XI
Quote:
Originally Posted by SJBimmer View Post
Have you ever changed your fuel filter? Any codes? Fuel pump making any strange noises?
I have never changed the fuel filter, I don't have any strange noises from the fuel pump. So the next thing I should try is the fuel filter? What about the MAF? could the MAF be the problem?
Reply With Quote
  #4  
Old 02-02-2013, 04:44 PM
Fast Bob's Avatar
Fast Bob Fast Bob is offline
Keeping it surreal
Location: Here, there, everywhere....
 
Join Date: Jun 2004
Posts: 34,548
Mein Auto: 2004 330Ci ZHP 3 pedals
CODES, man....ya *gotta* get the codes scanned ! Without that, you`re shooting in the dark, and you`ll never get to the root of the problem.
__________________
The road goes ever onward....
(R.I.P. Jever)

*Please support the Wounded Warrior Project*

When faced with choosing between two evils, always go with the one you`ve never tried before....
Reply With Quote
  #5  
Old 02-02-2013, 07:12 PM
TannerT TannerT is offline
Officially Welcomed to the 'Fest
Location: Columbia, Missouri
 
Join Date: Mar 2012
Posts: 966
Mein Auto: 03 330ci 3pdl 89 325i
Might be fuel related but without codes it could be the pump filter or regulator

Sent from my PantechP9060 using Bimmer App
__________________
Formula SAE "Speed is Sexy"
Reply With Quote
  #6  
Old 02-02-2013, 07:21 PM
xpro6000 xpro6000 is offline
Registered User
Location: PA
 
Join Date: Mar 2012
Posts: 9
Mein Auto: 325XI
I will place an order for a Bluetooth OBD II reader. I will update this thread when I receive it and get the codes.
Reply With Quote
  #7  
Old 02-02-2013, 07:41 PM
SeaRay SeaRay is offline
Registered User
Location: Michigan
 
Join Date: Dec 2011
Posts: 54
Mein Auto: 2002 330i
Just run by AutoZone. They will scan it for free.
Reply With Quote
  #8  
Old 02-02-2013, 07:47 PM
xpro6000 xpro6000 is offline
Registered User
Location: PA
 
Join Date: Mar 2012
Posts: 9
Mein Auto: 325XI
Quote:
Originally Posted by SeaRay View Post
Just run by AutoZone. They will scan it for free.
I usually did that, but I will use this for myself, friends and relatives as well so it will be useful, I found a very good one selling for $23 on Amazon which was hard to pass. It connects to your smartphone and gives all sorts of information.
Reply With Quote
  #9  
Old 02-08-2013, 03:41 PM
xpro6000 xpro6000 is offline
Registered User
Location: PA
 
Join Date: Mar 2012
Posts: 9
Mein Auto: 325XI
I received the OBDII reader and the codes are: P0313 and P0302 which from my research means misfire with low fuel. So I'm thinking about changing the fuel filter. I've heard some 325s have the filter in the fuel tank. How can I make sure my car has the fuel filter outside of the tank? is the only way to find out to jack up the car and look under the car?
Reply With Quote
  #10  
Old 02-08-2013, 06:07 PM
Fast Bob's Avatar
Fast Bob Fast Bob is offline
Keeping it surreal
Location: Here, there, everywhere....
 
Join Date: Jun 2004
Posts: 34,548
Mein Auto: 2004 330Ci ZHP 3 pedals
This should give you an idea of how to perform a filter swap.

__________________
The road goes ever onward....
(R.I.P. Jever)

*Please support the Wounded Warrior Project*

When faced with choosing between two evils, always go with the one you`ve never tried before....
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E46 (1999 - 2006)
Today's Posts Search
Thread Tools
Display Modes

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



Forum Jump


All times are GMT -7. The time now is 08:04 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms