How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask JayPutelis Your Own Question

JayPutelis
JayPutelis, Shop Foreman/ BMW Master Tech
Category: BMW
Satisfied Customers: 757
Experience:  10 yrs Experience; ASE Master Technician; ASE L1 Certified
31247390
Type Your BMW Question Here...
JayPutelis is online now
A new question is answered every 9 seconds

BMW BMW 325i: Eccentric Sensor Replacement

Resolved Question:

I've read that an oil leak is typically what makes the eccentric shaft sensor go bad. Is it a leak in the sensor itself, or a separate leak somewhere else that needs to be repaired that normally kills it? 

Also, since Im replacing it, I know I'll need a new valve cover gasket set and bolts.  Is it a magnesium cover or plastic for my vehicle?  I guess that determines steel or aluminum bolts.  The production month was 02/06 and it has an N52 engine.


I'd also like to know whether I need new gaskets for the valvetronic motor and eccentric sensor, unless those are commonly included in the gasket sets.  Thanks.
Submitted: 2 years ago.
Category: BMW
Expert:  JayPutelis replied 2 years ago.
Hi there,

Can you clarify your question? Where we're you reading about oil leaks?

JP
Customer: replied 2 years ago.
I had read on bmw forums that an oil leak typically causes the eccentric sensor to fail. I dont know if thats correct or not, or if there is a specific leak thats normally the culprit. For such an expensive repair, i just want to make sure Im taking the steps necessary to avoid a repeat problem. Thanks.
Expert:  JayPutelis replied 2 years ago.
The sensor itself is known to develop an oil leak in the body of the sensor; you may see oil in the connector when you take the connector off; simply clean the connector with electrical cleaner and it will be ok. There is no separate leak that needs to be repair that will prevent the sensor failure. The new sensor is an updated part though, that you will get from the dealer (from the original).

Your valve cover is magnesium with that model year. You will need a new valve cover and aluminum screw set for the replacement. I also recommend replacing the valvetronic motor gasket and eccentric shaft sensor connector seal in the valve cover when you have the cover off. Both those gaskets are known to develop external oil leaks over time.

Hope this helps,
JP
Customer: replied 2 years ago.
Excellent, thanks!! I ordered the replacement part, I didn't think about just being able to clean it. Do you have access to the part numbers for the two gaskets you recommend replacing? Thanks again!!!
Expert:  JayPutelis replied 2 years ago.
Do you have the last 7 digits for the vehicle?
Expert:  JayPutelis replied 2 years ago.
I used your production date to look up the parts....

Here is the list of parts you will need:
http://www.realoem.com/bmw/showparts.do?model=VB13&mospid=48522&btnr=11_3737&hg=11&fg=15

valve cover gasket 11127581215 (item 2) $39.42
aluminum screws 11120409288 $32.10
eccentric shaft connector gasket 11127528242 (item 3) $12.15

http://www.realoem.com/bmw/showparts.do?model=VB13&mospid=48522&btnr=11_3736&hg=11&fg=15
valvetronic motor gasket 11377516302 (item 7) $12.02

Be sure to torque the new aluminum valve cover bolts to 7 newton meters (about 5 ft lbs) and then 90 degrees torque angle.

-JP
JayPutelis, Shop Foreman/ BMW Master Tech
Category: BMW
Satisfied Customers: 757
Experience: 10 yrs Experience; ASE Master Technician; ASE L1 Certified
JayPutelis and 3 other BMW Specialists are ready to help you
Customer: replied 2 years ago.
Hi Jay, In reference my earlier question on the recommended parts: That eccentric shaft connector gasket is a real pain!! I had to cut the old gasket out with a razor since it was heat molded in there and hard.... The new gasket does not want to slide in to the hole.. Any tips or tricks used in the shop to do this?? How would you suggest pressing it in? It seems to be just a hair too large in diameter... Thanks!
Expert:  JayPutelis replied 2 years ago.
Use a 32 mm socket and lightly tap the seal in with a hammer. It will go in that way.
Customer: replied 2 years ago.
Ill give it a shot. That thing is tight!! Thanks!!
Customer: replied 2 years ago.
It's still not pressing in, the gasket seems to have a solid core through the middle so theres no give... It just warped the shape tapping it with the 32mm...
Expert:  JayPutelis replied 2 years ago.
I've had to live the rubber part of the gasket before... Try using sOme grease and tapping it in
Customer: replied 2 years ago.
Ill try the grease thanks. What do you mean "live the rubber part of the gasket"?
Expert:  JayPutelis replied 2 years ago.
Sorry, auto correct..... Grease the part of the rubber
JayPutelis, Shop Foreman/ BMW Master Tech
Category: BMW
Satisfied Customers: 757
Experience: 10 yrs Experience; ASE Master Technician; ASE L1 Certified
JayPutelis and 3 other BMW Specialists are ready to help you
Customer: replied 2 years ago.
Just figured it out, the steel ring from the center of the washer is still in the hole. Dang!!! Lolol wow

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
< Last | Next >
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
  • used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future. David L. Richmond, TX
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil Marysville, CA
  • Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible. Charles Walnut Creek, CA
  • As a single woman, I really appreciate an excellent and affordable opinion.
    Thank you Geordie, I will not hesitate to contact justanswer in the future!
    Sue Charleston, WV
  • Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff. Jim Castleberry, FL
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
 
 
 

Meet The Experts:

 
 
 
  • Roger

    BMW Master Tech

    Satisfied Customers:

    2906
    10 yrs. experience as BMW Master Technician, shop foreman and dealer.
< Last | Next >
  • http://ww2.justanswer.com/uploads/Guest/2008-02-15_191551_avatar.jpg Roger's Avatar

    Roger

    BMW Master Tech

    Satisfied Customers:

    2906
    10 yrs. experience as BMW Master Technician, shop foreman and dealer.
  • http://ww2.justanswer.com/uploads/EU/eurotec/2012-6-11_13153_mpjaphoto.64x64.JPG Marty's Avatar

    Marty

    ASE Certified Technician

    Satisfied Customers:

    406
    ASE & Bosch Certified Master Tech. Over 30 years experience.
  • http://ww2.justanswer.com/uploads/DA/dansciol/2012-7-7_16177_danpic.64x64.jpeg bimmaster's Avatar

    bimmaster

    BMW Technician

    Satisfied Customers:

    1817
    3 years dealer experience, master bmw tech
  • http://ww2.justanswer.com/uploads/bmwmaster/2009-05-09_062111_avitar.jpg Sam's Avatar

    Sam

    BMW Master technician

    Satisfied Customers:

    1043
    BMW S.T.E.P. graduate, 10 years BMW dealership experience
  • http://ww2.justanswer.com/uploads/hondatrx450/2010-01-18_231606_stuff_092.JPG mike's Avatar

    mike

    BMW Technician

    Satisfied Customers:

    694
    bmw master tech ase certified
  • http://ww2.justanswer.com/uploads/CA/caprio23/2011-12-13_155550_20111213105344.64x64.jpg Anthony's Avatar

    Anthony

    BMW Technician

    Satisfied Customers:

    628
    ASE Master Automobile Technician with over 20 years exp. in this field.
  • http://ww2.justanswer.com/uploads/bmwbum01/2009-12-28_205712_germany2000.jpg Thebmwbum's Avatar

    Thebmwbum

    BMW Foreman

    Satisfied Customers:

    533
    31 years BMW Experience