I have a 1998 durango 5.2 4x4. I replaced the radiator and thermostat and fan clutch about 8 months ago due to a plugged radiator. now it is when i drive it for about 30 minutes in town or on the highway it starts running around 230-240 F. when you deccelerate it cools a little. i have tried driving with no ac and with ac and no difference. I also noticed when i pull anything it heats alot faster. i just had a oil change and went with valvoline maxx life sythetic. (no Change). The water pump isn't leaking out the weep hole but i have heard that some won't when they go out. is there any suggestions before i change the water pump. Thanks

 

Did you replace the hoses when you replaced everything eles ? Sometimes a weak hose will suck shut and prevent the coolant from flowing.

 

Also check the trans filter. And check for back pressure on the Cat.

 

check my response to post by Rocky - you may need to pressure wash your A/C condensor as well...Chris

 

have the dealer check your timing if you are moving and the car heats up ,but when u stop it cools down ,it is a tale tale sign of improper timing