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Old 02-06-2009, 05:16 PM   #1
Xenocide
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Default Strange coolant leak

I have noticed i am slowly leaking coolant, it just dissapears, lose mabye 2 cups over a month. I think it is coming from this little sensor on the side of the radiator..maybe a temp sensor? looks like coolant is dripping from it..

Do they just pop out? is there an O-ring..any ideas?

Thanks.
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Old 02-06-2009, 05:33 PM   #2
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here ya go... this site is your best friend!

http://www.realoem.com/bmw/partgrp.d...06&hg=17&fg=05

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Old 02-06-2009, 05:39 PM   #3
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yea i saw that, is this a common leak? should i go ahead and replace the o-ring or whats the deal?
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Old 02-06-2009, 05:45 PM   #4
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well, if its leaking from there, than yes you may want to replace the o-ring... just remember that 'coolant flush' on our cars is PITA, and so expect to have to 'burp' the cooling system a few time later.

as for whether its common - not sure - my car never leaked from there.. but it contantly leaks from the 2 notorious plastic POS coolant flanges.

Quote:
Originally Posted by Xenocide View Post
yea i saw that, is this a common leak? should i go ahead and replace the o-ring or whats the deal?
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Metric Mechanic's 2.0 stroker/258' intake cam/42 lb. inj./remap/HD fuel pump
/DASC w.3' pulley @ 15psi/SNOW System/3.45 LSD/Billstein PSS coils
/Stromung Exhaust/DS1's/X-Brace/Front & Rear H&R Sways/OMP 300mm SW
/SAP delete/ASC+T delete/Hayabusa valve springs/MM's LTW flywheel
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Old 02-06-2009, 06:53 PM   #5
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Quote:
Originally Posted by marko View Post
well, if its leaking from there, than yes you may want to replace the o-ring... just remember that 'coolant flush' on our cars is PITA, and so expect to have to 'burp' the cooling system a few time later.

as for whether its common - not sure - my car never leaked from there.. but it contantly leaks from the 2 notorious plastic POS coolant flanges.
Yea I am not going to be able to flush the coolant anytime soon. I have a few 150+ mile trips soon, not something I want to do now.
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Old 02-06-2009, 11:28 PM   #6
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well now i don't see the leak...
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Old 02-09-2009, 01:04 AM   #7
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once again, you'll need a new radiator for an S52 swap any how.
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Old 03-13-2009, 07:26 AM   #8
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Congrats on solving your problem alone. You answered your question dude. Anyhow thanks for this info. next time I will not make a thread if I encounter same problem



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