i have an gslse and when i drive around with my a/c on, in this fl. heat when i get in to a lot of traffice my car start to stall out . but my temp gauge is below the half way mark. and when i open my rad no stream or and thing . the water pump is only 6 mouth old and the rad is new also. what could be wrong

 

Has nothing to do with your engine temperature.

Need to check the operation of the idle enhancement system per the FSM. You can find the FSM per my signature.