I recently changed the radiator, fan, and cooling sensor. Gauage rises after a couple hours of stop and go driving. I also replaced thermostat. Wat else sould be wrong

 

did you bleed the cooling system?

 

How would that b done. I opened a relief valve when I. Added coolant. Is that it?

 

Park the car on level ground. Wait until the engine is cold then take the radiator cap off and make sure the radiator is completely full. If not add more coolant to the radiator until full then start the engine with the cap off and keep adding more as necessary. During the bleeding process turn the heater lever or **** to full hot so air can get out of the heater core. As the engine warms up the radiator is going to start to overflow. Put the cap on at that point.

If the system is completely full I'd suggest jumpering the fan switch(*) to make the fan run all the time the key is on. If the fan doesn't come on with the switch jumpered, troubleshoot the fan system. If it does, test drive like that and see if there is any overheating.

(*) This is the one on the thermostat housing. It's a prime suspect when overheating occurs only with the car idling and/or in slow traffic. Did you replace it, or some other sensor?

 

I jumpered the fan n it works. I'm gonna try bleeding it. Thanks.