Originally Posted by mike3000fl
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.
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)...