2003 Z4 fuel pump replacement

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ssargeulb
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2003 Z4 fuel pump replacement

Post by ssargeulb » Tue Dec 15, 2015 4:03 am

I need help with the fuel pump replacement on a 2003 Z4.
I have searched (seemingly) everywhere and cannot find any information regarding how to access the fuel pump. The bits and pieces I have found indicate that the tank needs to be dropped and some comments claim that there is an easy access (not requiring tank removal).
I am willing to pay for a manual however there doesn't seem to be anything available that is specific to this issue.
Any help will be appreciated.

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Smartbear
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Re: 2003 Z4 fuel pump replacement

Post by Smartbear » Tue Dec 15, 2015 6:44 am

I have heard the tank needs to be dropped just to change the fuel filter so I can't imagine it's any easier to remove the pump :(
Are you sure it's the pump?
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GuidoK
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Re: 2003 Z4 fuel pump replacement

Post by GuidoK » Tue Dec 15, 2015 7:13 am

you dont have to drop the tank but you have to drain the tank, drop the exhaust and do it from underneath.

http://workshop-manuals.com/bmw/z_serie ... regulator/
http://workshop-manuals.com/bmw/z_serie ... fuel_pump/
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ssargeulb
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Re: 2003 Z4 fuel pump replacement

Post by ssargeulb » Tue Dec 15, 2015 8:43 pm

Smartbear,
thank you for replying. I too heard (and / or read) that the tank needed to be dropped as well as many other contortions that are required to replace a fuel pump on the Z4. To further confuse matters, I read and heard that there was a nifty access panel behing the passenger seat. As it turns out...the access thing was true of the Z3 but probably not the Z4.

I was very surprised at the effort that I have put into finding this information but it seems like I may have it now.

If you need to know, look at GuidoK's post, it seems to be accurate.

ssargeulb
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Re: 2003 Z4 fuel pump replacement

Post by ssargeulb » Tue Dec 15, 2015 8:44 pm

GuidoK,

thank you for your response. It appears that you were able to tell me what even a couple of BMW mechanics couldn't (or wouldn't).

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Re: 2003 Z4 fuel pump replacement

Post by ssargeulb » Fri Jan 01, 2016 8:05 pm

Apparently I just wasted a lot of time, money and effort on a fuel pump replacement because it didn't fix the problem. Getting SO frustrated trying to find information but right now I'm thinking that it may be the fuel pump relay.
Any help in diagnosing and / or (temporarily bypassing) relay would be appreciated.

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