[Es2] turbo after run pump

Miller, Chris chris.miller at infofoundry.com
Mon Dec 1 10:53:50 EST 2003

The 200q20v 3B runs the coolant backwards via the electric pump; i.e., through the head to the turbo.
Pump should never run while engine runs (or ignition on).
I seem to recall someone saying there were marking on the pump for + and -.

Chris Miller
Training Development
[i] The Information Foundry at Robert Bentley, Inc.
Tel: 617.528.4113
Cell: 978.844.0293
mailto:chris.miller at infofoundry.com

-----Original Message-----
From: Ben Klumper [mailto:bklumper at mdbworld.com]
Sent: Monday, December 01, 2003 10:52 AM
To: eS2 List
Subject: [Es2] turbo after run pump

Hey guys,

Does the turbo after run pump only come on when the engine is off, or does it run continually while the engine runs, and periodically afterwards until the coolant has cooled? The reason I ask is that I'm a little concerned about direction of flow. It seems that the S2 has the direction flowing opposite to the 200, if you look at the routing of the hoses. I have routed mine as per the S2. This leads me to believe that direction of flow isn't an issue, but there's always the chance that the S2's pump is wired in reverse to that of the 200, thereby reversing the pump direction. In short, I just don't want to be opposing the flow between the main water pump and the turbo cooling pump!

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