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First scan the car for codes if you are able. If not, perform the vent and bleed again since sometimes the first venting doesn't get all of the air out. Also it will allow you to listen for the pump and feel coolant running through the hoses if you haven't already. If you can hear the pump and feel the coolant then it is reasonable to assume that both your pump and tstat are working and you may have a clog somewhere like Efthreeoh suggested.
Other possibilities include a pump which is the wrong voltage, a poor electrical connection to one or both, or a defective part.
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