Runsgreatbut after it gets to operating temp,turn it off and it wont start till it cools off.does turn overas normal.

Is the MIL on? When you say HOT do you mean normal operating temperature or above normal?

normally the radiator will purge itself as long as the overflow jug remains at the recommended level. warm eng to normal operating temp if you have no leaks it should draw water as needed from the overflow jug when you shut the eng off .. it may take a few times of starting and stopping eng but this method does work.. careful as the radiator fluid is very HOT !!! if no overflow jug is in your system go to highest rad. hose and open the system there.only do this when eng is cool. slowly fill radiator at the cap holding the hose you remove higher than the cap. a helper is needed for this procedure. starting at btm rad hose gently squeeze entire length of hose working your way to the next lowest hose do the same procedure for each hose. heater hoses also need be done reattach hose start eng let idle till normal operatin temp is reached turn heater to full heat . let eng cool then chk level of rad. repeat as needed. good luck .TIP : be patient .

cooling fan works on a temp sensor in the engine block. it only turns on when the temp reaches a set limit and shuts off when it gets below a set limit.. cooling fan components are , fans, fan relay , and temp sensor . best way to test the fans would be to let the car set running and watch the temp till it goes up to 185 -195 deg. at this time the fans should turn on and the thermostat should open and cool the engine back down. also when ever the air conditioning is on so should the cooling fans be on. if the fans do not run the check all components till you find the broken one. fan relay and air conditioning relay are separate but work the same. and will interchange

does your temp gage seem off does it go like up to the h because if it does you could try unpluging your upper coolent sensor because that could cause that because it is telling you computer to run in closed loop when it should be running in open loop

sounds as if you have two problems the first is mechanical problem in the engine witch is causing the noise you are herring and engine to stall but if you did not here this till after you changed the crank sensor you may be lucky as that may be causing both the stall from before witch happens when they heat up and when you installed the new one if it is not set far enough away from the crank it may have hit it and that is the noise you heard and why it will not start back up pull sensor and see if end has damage.
hope this helps

Check the sensor which controls the cooling fans that cools the radiator it prevents the engine from over heating and allows the temp gauge to stay at normal range.recently had problems with my 2003 impala overheating it was the sensor had the thermostat replace as well.

the electric cooling fan for the radiator will not turn on when the engine reaches normal operating temp, its only supposed to come on if the engine temp goes over the normal temp. (around 220 degrees)
it is normal for the fan to come on any time the a/c or defroster is turned on.

replace your crank angle sensor

This vehicle has a radiator fan switch, it completes the circuit when the water temp get up to N.O.T normal operating temperature and turn the fans on, try changing radiator fan switch. Good luck and thanks for using FIX YA

Read the solution for the problem: Engine wont start after high speed higway. It might help.