There are 2 hoses to the right of the battery that enter the vehicle, may or may not be covered by plastic
Remove cover and then remove the hoses
Flush with garden hose in & out both tubes.
If I recall correctly, there is no flow valve (open system).... heat is controlled via heater flaps in the
Heater Box Assembly... missing foam on the blend doors can cause "no heat" operation: (Google Search Image)
You could also have a broken Heater Control Lever that has popped out at the base of the Heater Box: (My youtube Video
off of an A5 VW Golf, but principal applies to your car as well).
The lever should not "drop" (9 to 11 second mark)... worst case, it will be lying on the floor not doing anything.
If your engine is running hot hot... overheating, then it is probably a bad water pump.
Sunday, October 21st, 2012 AT 8:31 PM