I recently had replaced the head gasket, timing belt, and water pump, but oil is still mixing in with coolant in the radiator which then leads to my 2.3 CL overheating. Is the only other possible scenario a crack in the engine?

 

did you flush the radiator to get the oil out when you had the work done?

 

a very thorough flush

 

Did you send the head through a shop when you did the head gasket to check for cracks or warping? I think it could be a cracked head or worse a cracked block.

 

Was your engine block machined when you had the head gasket done?

Has the car even been over heated?