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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

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  #1  
Old 08-20-2010, 07:28 PM
BUZZ_PLUS BUZZ_PLUS is offline
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Location: Cairo
 
Join Date: Jan 2009
Posts: 73
Mein Auto: E46
can't accelerate

heey bimmers I have an E46 modl 2000 4 cylinder automatic

Lately my car started to accelerate badly and alot of fuel consumption :'(
I can't feel the torque that I always enjoyed.
I changed my spark plugs but nothing changed no related codes except miss firing I don't know from where I start , could a defected Idle control valve be the reason ??

any ideas ? plz

thnx in advance
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  #2  
Old 08-21-2010, 02:08 AM
jmanscotch's Avatar
jmanscotch jmanscotch is offline
is a Texan
Location: Colorado Springs
 
Join Date: Aug 2009
Posts: 1,284
Mein Auto: '04 530iA
VANOS....Fuel Filter.....DISA.....Coils.....Clean MAF sensor?
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-Jake

2004 325Ci - 5MT - SOLD & MISSED
2003 3.0 Z4 - 6MT - SOLD
1967 1602 - 4MT - STOLEN
2008 328XI - 6MT - EX STOLE
1995 325i - RUSTED AWAY
2009 135i - 6MT COPS IMPOUNDed
2004 530i - Auto...WTF?

Last edited by jmanscotch; 08-23-2010 at 01:25 PM.
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  #3  
Old 08-21-2010, 02:17 AM
jcourcoul jcourcoul is offline
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Location: Mexico
 
Join Date: Nov 2008
Posts: 5,192
Mein Auto: 2006 325Ci
Will need to have the error codes read on the OBD-II interface first before any meaningful diagnosis can be made.

Sounds like the automatic transmission went into limp mode, btw...
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2006 325Ci
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Old 08-22-2010, 06:59 PM
BUZZ_PLUS BUZZ_PLUS is offline
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Location: Cairo
 
Join Date: Jan 2009
Posts: 73
Mein Auto: E46
I don't really know what is an OBD-II interface but all I know is that I changed the fuel filter , changed the spark plugs checked the maf sensor and it was within limit... any other ideas ?
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  #5  
Old 08-22-2010, 07:05 PM
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jmanscotch jmanscotch is offline
is a Texan
Location: Colorado Springs
 
Join Date: Aug 2009
Posts: 1,284
Mein Auto: '04 530iA
The OBD-II is the port used by vehicles as a connection point to read codes/info from the vehicles computer. You can hopefully find someone/shop local that will let you use one for free or a small fee and connect it to this port and see if the car is registering any codes that can help the diagnosis. Here is a picture of the OBD port location for reference



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__________________
-Jake

2004 325Ci - 5MT - SOLD & MISSED
2003 3.0 Z4 - 6MT - SOLD
1967 1602 - 4MT - STOLEN
2008 328XI - 6MT - EX STOLE
1995 325i - RUSTED AWAY
2009 135i - 6MT COPS IMPOUNDed
2004 530i - Auto...WTF?

Last edited by jmanscotch; 08-22-2010 at 07:09 PM.
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