I have a 2002 durango with a 4.7 engine that keeps overheating. This week I have already replaced the thermostat, water pump, and top radiator hose but nothing has helped. The temp seems to rise faster when the AC is on so i dont use it. Im not sure what else I can replace that will help the issue.

 

check the e-fan, but it almost sounds like you have an air bubble in the system, or a blocked (maybe partially blocked) radiator

 

If its doing anything like mine is .. bubbling when the rad cap is off so you can see the bubbles .. its probley blown head gaskets lettting carbon monoxcide into the coolant... buy some allumiseal and put it in the radiator it will fix the problem for a bit till you can save up money to get the head gaskets done... mine just started doing the same thing

 

Check the E fan!

 

It just needs burped. And that is only done with the cap ON. Review the instructions on how to use the burp valve and once done, fixed.

Never pour any junk in the rad.

IndyD

 

THIS< is VERY good advice

 

i had the same problem, over heaing around city, not as bad on hwy. changed thermostat, fan clutch, flushed rad, engine, & heater, rad cap, but still overheating. checked for cold spots in rad and found cold spots at the bottom of rad. changed radiator and all has been great. old rad was very clogged. it had ***** of sand/mud al over the bottom inside and out. i would check the radiator first & go from there.

 

the crap they say to put in the rad for fixing headgaskets does nothing but clog everything up and make a mess.down here the popular one is liquid glass. its a total nightmare to get out once its in. i agree never put anything like that in there .

 

Those of u that replaced the electric fan...did u have to buy it from the dealership or where u able to get it somewhere else. It seems as tho im going to have to get it thru the dealership because no where else apparently has it. The dealer wants almost $400.00 for the e fan.

 

check napa online