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      10-02-2011, 11:09 PM   #94
N0OS3
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Drives: E90
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Quote:
Originally Posted by mike3000fl View Post
how do you hold it 30 seconds without starting the water pump cycle?

after holding the gas for 10 seconds it starts a 12 minute electric water pump venting cycle, used after a coolant change

See this diy.
http://www.e90post.com/forums/showth...=coolant+flush

the noise people hear is probably the water pump doing its thing.
I didn't 'hear' anything... after 10 seconds or 30 seconds (the first time i did it about a year ago i didn't remember hearing anything either)...
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