I have a 98 Durango and it's overheating. I've replaced the heads and gaskets, thermostat, and flushed the radiator. It overheats when I drive it but not while idling. My oil doesn't have any coolant. Any idea as to what this could be?

 

Check the fan clutch. There is link to a video on how to do this in the diy section.

 

Also, did you burp the system when you flushed the radiator?

 

Check the fan clutch blades, and do you have a electric fan too? I have seen fan's working in reverse causing the engine to overheat when driving.

 

Thanks for the replies guys. I was told this morning that it was the block and was worked up all day about it. Pressure tested it and it's good. So tomorrow I will check the fan clutch.

Well I checked the fan clutch. I can rotate it more than half way and it's wobbly so going to replace it. Probably going to replace the water pump as well.

 

Thanks for the help guys, replaced the fan clutch and water pump seems to be running cold now.

 

Could also be the radiator.

Replace the clutch first, then replace the water pump, then the radiator.