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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 07-18-2012, 07:25 PM   #1
Raymond42262
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Join Date: Oct 2005
Location: The South
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My Ride: Is German
Radiator Expansion Tank

My car has about 80k miles and I guess it is reaching that stage where things start to break. Last month it was the window regulator and this month it is the expansion tank.

My car started to leak Monday and although I have not removed the fan housing and dug down into the source of the problem, I believe it is the expansion tank. The leak is on the right side of the radiator.

A few questions....

Does anyone have a link to a good resource for the repairs ? I have tried the search button but I have seen several references to the problem but no step by step instructions or pictures.

I saw something about a sensor when I was looking up the part but I have never heard anyone mention it . Should I replace it ?

Are the hose clips hard to remove ? It does not look like there is much room.

Based on what I have researched so far it looks like I just have to remove the fan cover, a few 10mm screws, a few 25 torx screws, then replace it with a new one and replace the hose and screws. It looks like it should take only about 30-60 minutes.

Is it that easy or am I overlooking something ?

Thanks.
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Old 07-18-2012, 07:49 PM   #2
TurnersInOz
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Hi Raymond,
See Mango's thread, here: http://forum.e46fanatics.com/showthread.php?t=914109
This will give you a good idea of what's involved in a cooling system overhaul.
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Old 07-18-2012, 07:56 PM   #3
Raymond42262
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Quote:
Originally Posted by TurnersInOz View Post
Hi Raymond,
See Mango's thread, here: http://forum.e46fanatics.com/showthread.php?t=914109
This will give you a good idea of what's involved in a cooling system overhaul.
Thanks !
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Old 07-18-2012, 10:51 PM   #4
Raymond42262
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Any suggestions for good links to follow ?
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