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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 02-05-2013, 04:22 PM
Trauma hawk Trauma hawk is offline
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Mein Auto: 99 528it w sport package
Vanos question

Need advice on what to do I have a 99 528it, and when it started getting cold my car started to have bad mpg before I would get like 19-21 mpg when I would drive to work all street driving also I noticed some power loss it feel the same. I'm new to having a BMW and like to try to maintain the car my question is do I just change the seals or get a refurbished vanos 6cyl. Thanks for any help
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  #2  
Old 02-05-2013, 04:34 PM
mbell666 mbell666 is offline
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Mein Auto: e39 2002 540i6
Is the engine taking longer to get to operating temp or not reaching it?
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An e39 is like a beautiful wife, needs constant attention, lots of money, lets you down at the worse times but you’d never be without it.
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  #3  
Old 02-05-2013, 04:37 PM
Trauma hawk Trauma hawk is offline
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No it warms up fairly quick when it's cold it hesitates a little till it warms up then it doesn't hesitate forgot to mention that
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  #4  
Old 02-05-2013, 07:50 PM
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dtadrian dtadrian is offline
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Mein Auto: 1999 BMW 528i T Wagon
Replace vanos seals.
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  #5  
Old 02-06-2013, 04:34 AM
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Fudman Fudman is offline
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Quote:
Originally Posted by Trauma hawk View Post
my question is do I just change the seals or get a refurbished vanos 6cyl. Thanks for any help
You need to use punctuation. Following your post is difficult without it. Changing the seals (Beisan) is cheaper (~$200) than buying a refurbished Vanos (Dr. Vanos) but will take you longer to complete the job. However, if you currently have the Vanos rattle, going with the refurbished Vanos will save you from replacing the bearings (time & cost). You need to determine which Vanos you have (I believe you have single). Replacing the single is a bit more complex that the double as you must lock the cams.
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  #6  
Old 02-06-2013, 05:44 AM
FiveDriver FiveDriver is offline
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Can we verify when the 528's went to double Vanos ?? Is it a build date or a Model Year Change-over ??
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  #7  
Old 02-06-2013, 06:15 AM
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Fudman Fudman is offline
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I believe the changeover occurred in 1999 on the M52 engine. The OP may actually have a double Vanos.
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  #8  
Old 02-06-2013, 06:20 AM
Trauma hawk Trauma hawk is offline
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I have a little rattle.
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  #9  
Old 02-06-2013, 07:13 AM
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Fudman Fudman is offline
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Originally Posted by Trauma hawk View Post
I have a little rattle.
In that case, you need to do the bearings. This adds cost, time and complexity to the basic 4-6 hr job. I have done multiple Vanos jobs but hesitated when it came to replacing the bearings. I had my brother in law just buy the Dr. Vanos replacement for $250 for his e60. Since the seals, bearings & vice jaw liners cost $135, the added $115 to have all that work pre-done seem justified (he was paying anyway).

This is one of the best maintenance jobs you can do on the e39. It will restore your engine's timing & performance to levels you didn't know existed.
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  #10  
Old 02-06-2013, 01:38 PM
daytradeoil daytradeoil is offline
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Hmmm now this has me thinking i should fork over the extra cash and get the whole unit rather then just doing seals to avoid any rattling headaches down the line.

Decisions decisions.
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  #11  
Old 02-06-2013, 01:43 PM
Trauma hawk Trauma hawk is offline
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How can I tell by the vin if my car has single vanos or double vanos
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  #12  
Old 02-06-2013, 02:21 PM
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Fudman Fudman is offline
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Quote:
Originally Posted by Trauma hawk View Post
How can I tell by the vin if my car has single vanos or double vanos
Input your VIN into RealOEM.com. Then go to engine, cylinder head and then locate which Vanos you have. The single (11361748819) has a single cylinder and the double (11361440142) has two.
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  #13  
Old 02-06-2013, 02:30 PM
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Nline6 Nline6 is offline
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Do you have a plastic cover over the VANOS? Or is a seperate metal bronz ish color over the vanos? ie is your valve cover plastic or metal? (not the vanity cover)
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  #14  
Old 02-06-2013, 02:45 PM
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johnstern johnstern is offline
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Quote:
Originally Posted by Trauma hawk View Post
Need advice on what to do I have a 99 528it, and when it started getting cold my car started to have bad mpg before I would get like 19-21 mpg when I would drive to work all street driving also I noticed some power loss it feel the same. I'm new to having a BMW and like to try to maintain the car my question is do I just change the seals or get a refurbished vanos 6cyl. Thanks for any help
Your bad mpg and hesitation when cold sounds like a vacuum leak. Cracks in the rubber intake boots are the most common vac leaks. You need to remove and inspect them as it is very difficult to see the cracks when the boots are installed. If the boots are OK, the easiest and best way to find vac leaks is by having a smoke test done at an expert BMW indie shop. After they report to you, you can decide if you or they should do the repairs.

Rebuilding and/or replacing your Vanos is a good idea too. A 99 528 should have the M52TU engine which is double Vanos. As someone advised above go to www.realoem.com with the last 7 numbers of your Vin. You'll find out for sure there.
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  #15  
Old 02-07-2013, 07:41 AM
FiveDriver FiveDriver is offline
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I don't think you can make the general statement about the'99 528 being Double Vanos. I think it depends on the Build Date. When I enter my VIN number in RealOEM......I get a Build Date of 10/98 and the Single VANOS part Number. I'm not sure exactly when the M52TU Engine was phased in.
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  #16  
Old 02-07-2013, 08:57 AM
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Fudman Fudman is offline
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Quote:
Originally Posted by FiveDriver View Post
I don't think you can make the general statement about the'99 528 being Double Vanos. I think it depends on the Build Date. When I enter my VIN number in RealOEM......I get a Build Date of 10/98 and the Single VANOS part Number. I'm not sure exactly when the M52TU Engine was phased in.
Agree completely. Best to be sure before ordering parts!
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  #17  
Old 02-07-2013, 09:54 AM
cn90 cn90 is offline
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Re Single vs Double Vanos...Open the hood and look at the engine, the answer is obvious when you look at the front of the engine.
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