Why 1989 Eldorado runs hot?

What is your question?

Runs hot if idling, but start driving or turn air off temp drops. Changed radiator, water pump and fans. Then changed cooling fan module it worked for one night. Could on of the parts not be working or could it be something else?

What makes this problem better or worse?

Start driving or turn air off temp drops

How long has your 1990 Cadillac Eldorado had this problem?

Had car a month and it came like that