My 99 Cherokee smells hot after about 2-3 minutes of operation. All of the fluid levels are good and there are no leaks. Air filter is clean and it even has a new radiator. The engine looks clean and no road or fluid build up can be seen. Anyone else have this problem?

 

I could be your catalytic converters warming up. It will smell strange if your fuel has a lot of sulfur in it. The convertors on the 99 are right on the end of the manifolds.

 

How new is the radiator? They tend to smell for little bit when brand new.

 

I can check the converters. The smell is there pretty much the whole time the car is on after the 2-3 min timeframe. I fill it up using 87 unleaded from Chevron. The radiator is 7 months old...

 

Not the radiator then.

 

heater core leaked on mine but never enough to make a puddle anywhere. i noticed it was stronger when i turned on the heat... if it smells like antifreeze inside the car im sure thats it..