Overheating....changed waterpump/thermostat! Just changed water pump and thermostat....car is still overheating? What should I do?

Couple of thoughts. are you losing water/antifreeze, do you have the right mixture 50/50 water/antifreeze. You did not say if the thermostat is removed or replaced. If thermostat is stuck closed water will no circulate. Are you getting any flow from the water pump. If your heater core is bypassed you should not get any hot air from the heater in the vehicle. Make sure your oil levels are good.
https://www.dummies.com/home-garden/car-repair/heating-cooling-system/how-to-troubleshoot-an-overheating-engine/
https://www.thoughtco.com/figure-out-why-your-car-is-overheating-281320

It could be the water pump not circulating the water, this is a common failure when overheating. I hope this helps :)

Thermostat is probably the problem, the water pump when bad leaks coolant causing an overheating condition.

If your car is leaking coolant from the water pump. Replace the water pump. If not replace thermostat first. It is the cheapest out of the 2.

This is typical of BMW 318 and others I suppose.
If after changing the radiator, the hoses, the water pump then the other cause is leakage of coolant at the back of the engine block.

This is hidden but there is a hard plastic outlet which gives away after 5 or more years. If the leakage is serious you can notice the coolant disappearing very fast.

Worse it could be the gasket leaking.

Water pumps are not normally what causes overheating, in fact that would be my last item to change. The only way that a water pump fill cause overheating is if the impeller has come off the shaft or completely worn down. I would first start with the thermostat. If this dosn't fix it, then I would be looking at the condition of the radiator I.E. is it plugged, are the fins up front full of bugs and debris ect. Then I would also check the cooling fan operation, does it come on when engine is hot? also does it come on with the A.C. operation-it should. Then last of all the water pump- and no its not easy on this one, due to lack of clearance.

Possible early signs of a water pump problem. A failing waterpump will circulate coolent when the RPMS are high but when you slow down, so does the waterpump, thereby causing overheating.

just installed a new water pump and thermostat my 97 trans am keeps overheating,anyone know why?

there are three hoses leading to the water pump. the biggest one oviously goes to the thermostat housing, but the other two are much smaller 1 inch hoses, one of wich goes on the water pump and the other on the thermostat housing. if you follow the hoses one will connect to the upper part of the overflow for the radiator after hitting a T in the lines, that hose connects to the thermostat housing, and the other goes to the water pump its self.

could be a leak or crack in a radiator hose
could be water pump not working good or leaking
could be radiator leaking
could be thermostat half blocked