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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > X Series > X3 E83 (2004 - 2010)

X3 E83 (2004 - 2010)
Talk about the E83 BMW X3 in this forum!

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  #1  
Old 08-29-2015, 09:46 AM
noego noego is offline
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Location: Central Illinois
 
Join Date: Feb 2006
Posts: 948
Mein Auto: '06 X3, 1997 Chevy truck,
Radiator cap

Installed expansion tank, water pump, thermostat, water pump pulley, flush and fill - what could go wrong??? Next morning see a wet spot under the car that turned out to be coolant. Couldn't figure out source of a leak so after three days took it to a trusted shop and was told the radiator cap was shot.

It's always something!
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  #2  
Old 08-29-2015, 10:45 AM
Alika808 Alika808 is offline
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Location: Hawaii
 
Join Date: Feb 2013
Posts: 708
Mein Auto: 01 325 / 02 X5 / 03 525
I am wondering if they (shop) did the coolant pressure test? How's the cap? If you tighten the cap, can you feel it's going tight and seal? Radiator cap is the last thing you look for leak. I am not convinced about the cap. Also, you can see if the cap leaks, just run the car until the radiator pressurize. Ask the parts store around your area, they loan the coolant pressure test and DIY or just go what they told you and replace the cap. It's not that expensive.
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  #3  
Old 08-29-2015, 11:08 AM
noego noego is offline
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Location: Central Illinois
 
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Mein Auto: '06 X3, 1997 Chevy truck,
Quote:
Originally Posted by Alika808 View Post
I am wondering if they (shop) did the coolant pressure test? How's the cap? If you tighten the cap, can you feel it's going tight and seal? Radiator cap is the last thing you look for leak. I am not convinced about the cap. Also, you can see if the cap leaks, just run the car until the radiator pressurize. Ask the parts store around your area, they loan the coolant pressure test and DIY or just go what they told you and replace the cap. It's not that expensive.
Yes, a pressure test was done and showed the cap was the problem. The irony is the cap is something I think I'll replace the next time I order something from BavAuto, but always forget. We really love this X3 - got it almost 10 years ago and don't even discuss trading it in.

Hope you're doing well in beautiful Hawaii!
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  #4  
Old 08-29-2015, 11:18 AM
Alika808 Alika808 is offline
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Location: Hawaii
 
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Mein Auto: 01 325 / 02 X5 / 03 525
Well not so bad. Thank you.
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  #5  
Old Today, 04:42 AM
jlex jlex is offline
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Location: NW Pennsylvania
 
Join Date: Jul 2013
Posts: 480
Mein Auto: 2005 X3.0i
Buy this 1.2 bar cap instead of the conventional cap. It will relieve pressure on the system sooner if needed and avoid rupturing the plastic holding tank. I've had one on my '05 for three years now & it works fine.
http://www.germanautosolutions.com/b...12_bar_cap.php
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