after awhile she starts to climb with the hot weather coming on no leaks noises or heating problems just hot with or with out the ac on turn the heat on and it goes back to normal thinking a thermostat

 

Sounds like the beginning of a hot novel.


Tell us more....

 

Having a similar issue and I think's my fan motors. I noticed when they are on they spin pretty slowly. I have to do some mroe troubleshooting, but I'm slightly injured so it's hard....

 

Just fixed a similar problem on my car. Seemed to work fine but as the weather warmed up, particularly going up hills, the temperature would climb as well. Turned the heat up and it cooled off again. It ended up being the thermostat. If there aren't any leaks anywhere and the cooling system hasn't been abused by running straight water for extended periods of time, it's most likely the thermostat on yours as well.

 

Check fans first. Infiniti extended the warranty on them due to failures, so it's a fairly common problem. If those are good, then go for the thermostat as others have suggested.

If you have an uprev cable, then you can use the cipher program to test them pretty quickly.

 

OP probably should have specified if it happens while moving or not moving. Fan issues will cause it to overheat only while stopped or moving slowly, while a bad thermostat would only cause it to overheat while driving at normal speeds. (assuming it opens enough to not overheat at idle, or open just enough to make it not an issue until the weather warms up like in my case)