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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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Old 06-21-2011, 03:56 PM
323ifever 323ifever is offline
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Location: Los Angeles
 
Join Date: Jun 2011
Posts: 1
Mein Auto: 99 BMW 323i
Unhappy rough idle/misfire, could it be the coils?

Hi, recently my 99 BMW 323i has been misfiring when starting up. It would make a popping/cracking noise under the hood, and then would stop. However, it does sometimes have rough idling, and after idle, it would have no power it would only go to 20 MPH, when the gas pedal is pushed down all the way. The no power occurs when stopped at a red light/ or slow traffic, not completely parked.

We checked everything from the coils, to the battery, to antifreeze, to the O2 sensors.

We changed the O2 SENSORS, the water pump, gaskets, washer reservoir, hoses, but this is for the cooling system....only.

Does anyone know what could possibly cause this? And, what are the potential solutions? Please, Help! This doesn't happen every time, but every so often it does...Usually everyday, and some times it runs smooth, other times it doesn't.

Last edited by 323ifever; 06-21-2011 at 03:58 PM. Reason: added info
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Old 06-21-2011, 04:21 PM
Steelcitybeemer Steelcitybeemer is offline
Liebe mein bimmer!
Location: Kaneohe, HI
 
Join Date: May 2011
Posts: 131
Mein Auto: 2003 325i
Again, another thread where codes would be most advantages.
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2003 325i... Stay easy
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