"bleeding" The Coolant System

[Mikez996]

I just replaced the water pump on my 1999 cabrio. Now the high coolant temp is flashing intermittently. The tech manual says, "bleed the coolant system". How is this done? At least 2.5 gallons of dirty antifreeze was drained out and only 2 went back. Could there be that much air trapped in the system? Thanks for your help

[Dharn55]

The best way is to get a vacuum system like the Uview 55000:

http://www.amazon.com/U-View-Vacuum-Cooling-System-Refiller/dp/B001DICJV6

You may find one for under $100 if you look around.

There is also a bleeder valve on the top of the coolant tank, the little metal loop opens the bleeder. But this is a slower way, and is not as fool proof. There are a lot of hoses and tubes with high spots that trap air in them.

[white99c2]

Did you release the vent by lifting the spring valve just above the tank, it burps the system and should get rid of any air bubbles. start the car with the vent up, warm it up and drive it for a mile or so.

The best way is to get a vacuum system like the Uview 55000:

http://www.amazon.com/U-View-Vacuum-Cooling-System-Refiller/dp/B001DICJV6

You may find one for under $100 if you look around.

There is also a bleeder valve on the top of the coolant tank, the little metal loop opens the bleeder. But this is a slower way, and is not as fool proof. There are a lot of hoses and tubes with high spots that trap air in them.