bmw e34 hesitation problems! HELP! - BMW Forum - BimmerWerkz.com
5-Series (E12,E28, E34, E39, E60) Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)

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#1 (permalink) Old 01-29-2009, 01:23 PM
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Smile bmw e34 hesitation problems! HELP!

Hi i have a brilliant 520se but it does have its downfalls with problems.
Sometimes when i accelorate my power seems to bog down and jerk as if its not sucking in the fuel.Ive checked all major and obvious things under the hood and around the car but nothing comes to my eye that comes to fault.
Im running out of ideas on what to look at.Has any one got near same problem with any ideas?
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#2 (permalink) Old 01-29-2009, 10:32 PM
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It can be the fuel filter man. has that been replaced recently? If not I would change that and that may solve your problems.
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#3 (permalink) Old 01-30-2009, 11:00 AM
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The fuel filter was the first thing i changed at the time the problem occured.
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#4 (permalink) Old 01-30-2009, 11:04 AM
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Maf???

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#5 (permalink) Old 01-30-2009, 11:37 AM
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i want to put a photo of my car on here but i dnt no how! can any one help me?
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#6 (permalink) Old 01-30-2009, 11:39 AM
OMFG another one!?
 
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witeshark is just really nice witeshark is just really nice witeshark is just really nice witeshark is just really nice witeshark is just really nice
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#7 (permalink) Old 01-30-2009, 12:36 PM
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my bmw home made eyebrows an grill
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#8 (permalink) Old 01-05-2010, 12:06 AM
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Quote:
Originally Posted by bmere34 View Post
Hi i have a brilliant 520se but it does have its downfalls with problems.
Sometimes when i accelorate my power seems to bog down and jerk as if its not sucking in the fuel.Ive checked all major and obvious things under the hood and around the car but nothing comes to my eye that comes to fault.
Im running out of ideas on what to look at.Has any one got near same problem with any ideas?

yea similar problem. did u resolve it?
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#9 (permalink) Old 01-06-2010, 10:24 AM
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no not yet still try work it out
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#10 (permalink) Old 01-06-2010, 07:24 PM
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Maf ???

Quote:
Originally Posted by bmere34 View Post
no not yet still try work it out
Ive ordered a MAF should be here tomorrow hopefully it will solve my sluggishness problem.. maby you can borrow one so u can try it?
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#11 (permalink) Old 01-12-2010, 04:58 PM
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Biggest problem with these cars are vac leaks--with regards to power. You can have a small vacuum hose leak and not have a code or check engine light come on and you'll play hell trying to find it. One of the greatest mods though for our cars is the new Vanos seals that have been out now for a little over a year--change these seals out and the car will run better than new.
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#12 (permalink) Old 01-20-2010, 06:12 PM
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ive had my car put on the computers and it picks up nothing. ive gone through the obvious. can you explain in more detail about the vanos seals so i can check mine and go further in to replaceing them. thanx
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#13 (permalink) Old 01-21-2010, 03:30 AM
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All about single Vanos and how to do:

Beisan Systems - Procedures - Single Vanos Procedure

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#14 (permalink) Old 01-21-2010, 06:04 AM
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What year is your car--if it's after 1999 then it has the double Vanos and not as hard to change as the single system is. With the double system you don't have to have all the special BMW tooling to do the job. I was one of the first to make the change over to the new product that Ragaie brought to us. Main thing to remember is that these seals help control the engine timing and when they aren't working properly the timeing would not be in spec. The BMW seals have been shown to be worn out in as little as 10k miles.
My new Besian seals have been in my car for over 50k miles and the car is running strong. As soon as I turn the key she fires right up and purrs--before the car would sit and shake when cold. The above link that was posted to Besians --also has a link to the double Vanos procedure---if you decide to try this--Besian is the company where you order the product. Stay away from the BMW company on this--they will only replace bad seals with new bad seals. Hope that helps
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#15 (permalink) Old 01-21-2010, 08:30 AM
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e34 (1987- 1996) Single Vanos

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