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7 Series / 8 Series
The BMW 7 series and 8 Series Forum

 
 
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  #1  
Old 10-15-2009, 07:18 AM
fms1233 fms1233 is offline
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Location: ny
 
Join Date: Oct 2009
Posts: 3
Mein Auto: 1998 bmw 740il
98 740iL runs rough when cold

my 1998 740il runs rough when cold. its ok after normal operating temp is reached any ideas.
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  #2  
Old 10-15-2009, 05:34 PM
DJ_GMONEY DJ_GMONEY is offline
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Location: Mass
 
Join Date: May 2009
Posts: 50
Mein Auto: '98 740IL
I went 3 weeks without driving my car due to surgery. I started it up a few days ago and i thought the engine was going to fall on the floor because it was rough. The car was actually rocking from side to side. After a minute or so, it was better. I'm on the east cost (MA) and the temperature has begun to drop daily. I say let it run for a few minutes and it should be fine. Mine had no noises or anything. It just had a violent shake going on. It was doing the Harlem shake or something.
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  #3  
Old 10-16-2009, 03:32 AM
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CodyItaliano CodyItaliano is offline
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Location: Corpus Christi, TX
 
Join Date: Feb 2009
Posts: 628
Mein Auto: 2001 740i
its acting like a normal german car. my mine runs smoother with the ac going than in winter when i dont use it. i dunno if thats what you're saying.
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  #4  
Old 10-16-2009, 08:20 AM
balance balance is offline
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Location: NC
 
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Mein Auto: 97 740iL
Mine was doing the same thing. I found out that it was an intake leak, more specifically the PCV plate on the back of the manifold. The way to check for this is to pull the dipstick while the engine is running and listen for a sucking sound.
  #5  
Old 10-16-2009, 10:58 AM
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CodyItaliano CodyItaliano is offline
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Location: Corpus Christi, TX
 
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Mein Auto: 2001 740i
will do. even running slightly rough, like when my spark plugs were bad, the car still ran rather well. i cant imagine people letting their 4.4s go to hell though.
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*Der E38*
manufactured: 7/01
color: anthrecite metallic
wheels: style 89 E66, 19X9F 19X10R
ext. lighting: 8000k D2S & LED plate light
*want to get sport rear diff*
 

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