1993 100 CS. i just replaced the heater core and things went well. i then added coolant and bled the air out of the system using the bleeder valve at the back of the engine. however, the car is over heating so i must of missed something. i try to bleed more air from the system and i still have a problem. is there another bleed valve somewhere? this is what happens.

car heats up to operating temperature fine. it then moves into the position near the first "dot" on the themp gauge. then the cooling system makes a thumping noise and the cooling hose from the coolant tank shakes like hell. is this the thermostat that i hear? it is obvious that the system is not flowing properly and therefore not cooling. what have i missed?

thank you for the help

 

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