I change the thermstat i change the water pump what alse would make it over heat

WELL IT COULD BE WATER PUMP,THERMSTAT, MOST NEWER CARS HAVE ELECT COOLING FANS ONE RUNS ON/OFF TO CONTROL ENGIHE TEMP THE OTHER RUNS WHEN A/C IS ON BECAUSE OF THE ADDED HEAT AND STRAIN ON THE ENGINE

check water pump with car OFF try spinning the fan if spins free check thermstat if not i would say change water pump i would suggest changing them both your looking about 50 bucks for a water pump and about 10 on thermostat (i would get a fail safe, if it breaks it locks open so theres no engine problems)

Well, you could have a head gasket leaking into the cylinder.

There must be a leak somewhere.

Also, the system may need to be flushed.

Also, check to see if the water pump has been changed with an opposite impeller.

This happened to me once on a car that had the wrong water pump installed.

Good luck on this one.

bad water pump maybe or thermstat is froze shut. maybe the cooling fans are not working.

1. With what you have replaced, the only remaining credible explanation is the Water Pump. If the Water Pump is not operating correctly, this will cause overheating. The Radiator -"side blow out"? Did the radiator cap you have on not work. Overheating should cause fluid = steam to blow out the cap and not blow out the side of the radiator.
2. One thing you can do before replacing the Water Pump is to flush your entire system. There could be a blockage in the system. These flushing kits are available at most stores (Walmart or Autoparts Stores) and you can do it yourself.
3. Was the Engine Coolant Temperature Sensor (mounted near the thermostat) also changed out? If this was malfunctioning it could be giving you a false reading.
The Water Pump is the likely culprit if the Van is truely overheating.
Let me know if this helped, or if you have additional questions or information. Feel free to contact me at FixYa.com!

Did you have heat after all the work that was done?

It sounds like a faulty thermostat. Follow the main radiator hose to where it hooks onto the engine. The thermostat is located inside that housing. But is the cooling fan operating? Do you see any leaks at the radiator, hoses, or water pump? The water pump should have a "weep hole" and coolant will be coming out of it if the water pump is defective. Hopefully, it is the thermstat, that is an easy fix. Hope this helps and good luck.

water pump is most likely shot try changing that out

You need to fill the system up with coolant I reckon.

sounds like you may have an air bubble trapped. Try loosening the radiator cap & running the engine at 1500 rpms till the thermstat opens & see if you can "burp" the air out. You may lose a little coolant this way. shut off car & recheck coolant in radiator and reservoir bottle. Just because reservoir is full, doesn't mean radiator is full.