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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 11-19-2012, 09:18 AM
Makomagnet Makomagnet is offline
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Location: Mass
 
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Mein Auto: 2001 525
Vanos or no vanos

I own a 2001 E39 525i w/M54 engine. Does this engine have Vanos ?

Thanks
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  #2  
Old 11-19-2012, 09:28 AM
edjack edjack is offline
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Mein Auto: '97 540i 6 speed
Yes, both intake and exhaust. Why do you ask?
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Ed in San Jose '97 540i 6 speed aspensilber over aubergine leather. Build date 3/97. Golden Gate Chapter BMW CCA Nr 62319.
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  #3  
Old 11-19-2012, 09:57 AM
Makomagnet Makomagnet is offline
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I didn't know if my car has vanos and I understand they require maintenance from time to time.
Do you know what the maintenance and schedule is ?
I ask because I have a fuel trim issue (P1192) and cel.
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Old 11-19-2012, 02:36 PM
edjack edjack is offline
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Mein Auto: '97 540i 6 speed
Post-cat fuel trim might be fixed by changing the post-cat O2 sensor. This code is for the front three cylinders. Perhaps someone else can step up with a more definitive answer.

The VANOS has no affect on fuel trim. The VANOS seals must be replaced to restore original performance. This must be the maintenance to which you refer. If the seals are replaced with Beisan seals, they won't need replacement for a long time, if ever.

See www.beisansystems.com.
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Ed in San Jose '97 540i 6 speed aspensilber over aubergine leather. Build date 3/97. Golden Gate Chapter BMW CCA Nr 62319.

Last edited by edjack; 11-19-2012 at 02:39 PM.
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  #5  
Old 11-20-2012, 03:48 PM
Makomagnet Makomagnet is offline
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Location: Mass
 
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Mein Auto: 2001 525
Edjack post cat O2 already changed, didn't help light came on in 15 miles. Pre cat O2 changed to no avail. Told my issue is a fuel trim issue due to a vacuum leak somewhere.
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  #6  
Old 11-20-2012, 04:02 PM
poolman poolman is offline
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Mein Auto: 525i station wagon
On the Vanos question--If you Diy you should check out the Besian System website and read the diy there and the reasons for doing this work--this will bging your car back to life. On the fuel trim issue--use the search engine at the top of the page and type in Vacuum leaks revisited--that will give you all the spots we know of to search and destroy Vacuum leaks--Hope that helps
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  #7  
Old 11-21-2012, 12:52 AM
Sumotide17 Sumotide17 is offline
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Mein Auto: 2001 540I/6 Sport
My long term fuel trim was a little over 15% until I cleaned my MAF thoroughly. CEL was on. Afterwards, the CEL turned off and my Long Term Fuel Trim is now about 7% on both sides. I'm pretty sure you have a MAF but I don't know.
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Old 11-22-2012, 06:49 AM
Makomagnet Makomagnet is offline
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Mein Auto: 2001 525
Maybe my scanner can't read long term fuel trim because its always 0. Short term ranges from -8 to about +8

Vanos, if it works, don't fix it
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  #9  
Old 11-22-2012, 10:02 AM
poolman poolman is offline
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Replace the seals in the Vanos--you will be glad you did--you only think that they are OK. Once you replace them you will then understand--they will awaken the engine like no other mod I could suggest , other than a super charger or turbo---my 2 cents issued
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