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7 Series / 8 Series
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  #1  
Old 01-27-2008, 06:08 PM
lenmikelcook lenmikelcook is offline
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Location: Overland Park, Kansas
 
Join Date: Jan 2008
Posts: 16
Mein Auto: BMW 740IL, e38
Owners manual for 1998 740il

Where can I get an owner's manual for a 1998 BMW 740il.

Also, where is the plug in for the check engine light?
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  #2  
Old 01-27-2008, 06:14 PM
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M.Wong M.Wong is offline
E38 E91 (R56 E30 E39)
Location: Seattle WA
 
Join Date: Jan 2003
Posts: 2,323
Mein Auto: The E38
Manuals in pdf are at: http://www.e38.org/
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M.Wong
E38 2000 740iL Orient Blue
E91 2012 328xiT Alpine White

Passed on to new families:
E30 1987 325i Royal Blue
E39 2003 540i/6 Sterling Gray
R56 2010 Mini Cooper S British Racing Green


  #3  
Old 01-28-2008, 06:55 PM
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crewdog843 crewdog843 is offline
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Location: Las Vegas, NV
 
Join Date: Mar 2006
Posts: 672
Mein Auto: '08 Z4 3.0si Roadie
Please update your personal profile to show what year 740 you own so that we can help you quicker, without having to wade through your previous posts.

Check engine lights illuminate in response to emissions related problems. The majority of these problems turn out to be MAF, O2 sensors, or cam/crank position sensor problems. Give us a little more to go on with regard to your CEL. There are two locations on my '01 for diagnostics: One under the hood on the pax side, and one on the center panel below and to the left the cup holder. Yours may be in similar locations. Emissions testing is normally done via the center panel location, easily accessed by sliding the small finger of your right hand behind and below the wood trim, gently pressing forward on the small protruding trigger behind the trim.

Hope this helps.

jake
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  #4  
Old 01-29-2008, 01:23 PM
lenmikelcook lenmikelcook is offline
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Location: Overland Park, Kansas
 
Join Date: Jan 2008
Posts: 16
Mein Auto: BMW 740IL, e38
Thank you. Still trying to navigate my way around this web site. Questions:
1- Is it worth it to buy a diagnostic system? Found one on the internet for $100
2- The CEL will come on for 3-4 days and then be off for 3-4 days.
3- Are the sensors hard to replace if identified? If not hard, best place to purchase.
  #5  
Old 01-31-2008, 07:46 AM
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crewdog843 crewdog843 is offline
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Location: Las Vegas, NV
 
Join Date: Mar 2006
Posts: 672
Mein Auto: '08 Z4 3.0si Roadie
There are several diasgnostic tools available for these cars. Peake is a name which comes rapidly to mind. You still have to be able to read the codes.

With regard to your CEL: My car had the same issue right after I bought it. I took it to the dealer (as it was still under warranty and I had not yet found a good indy here in Vegas). The first question the service writer asked was: "How is the car running?"

I replied that it was running quite well with no issues I could feel or hear. He said in effect:
If that was the case, make an appointment as it was not an immediate issue. I did, and it turned out to be the cam position sensor on the driver's side. This is something which you can replace yourself....and in some cases, all that needs to be done is to clean the sensor head.

Just remember that the CEL is always 'emissions related'. If you go for an emissions check and the light is illuminated....the car will not pass (either the tech will notice it and advise you, or the test will provide results which will fail the car).

Many folks like www.autohausaz.com I like www.bavauto.com

Compare prices and shipping....sometimes it is cheaper to get the same part immediately from your local dealership, and if you have a good relationship with the counter person, you can get a lot of small stuff free.

jake
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