Its usually when im on the freeway, but my leg area heats up when im speeding up.

I just replaced my Waterpump so i know there coolant circulating..

 

I cant say that ive had this problem. Is it comming from the vents? or do you notice the carpet getting warm?

 

I assume this happens when your heater is turned off? For some strange reason, Nissan made the Maxima so that it continues to blow air through the floor vents even when your system is turned off. Push the circular button and it should stop.

 

Yea this. It comes from the vents.

 

Yeah I have the same problem. Its gets hot.

 

You see what was done there?

This is the problem/solution/explanation.

 

This is a good thing. Especially noticeable when you flush the whole coolant system and use new and proper non-silicated nissan long life coolant.

Set the recirculation button to not allow outside air to come into the cabin as mentioned above, also set the temperature in the middle between the hot and cold and you will not feel a thing as this closes the heater core.

I like to use this hot air on the hwy without turning my heater on, saving fan life maybe I duno why, but i like it...

 

Heh thats exactly what I do. If im cold i just put it on warm and never actually turn on my heater and it does the job. Helps save gas.

 

Innovative...

 

So this has nothing to do with rpm and operating temp of the engine?
Jae

 

Yeah its getting cold.. appreciate the heat and dont worry about having to turn it on... i do it all the time..

 

^^^as do I, it will also blow cool air if you have had the a/c set cold.