Yes. Both speeds working. When driving, no problem but when sitting and idling that is when it starts to go up, and the fan is running high speed. I have not tried to see how hot it would get if I just let it idle for a long time, maybe it would just get so warm and settle in. When idling and it starts to climb it effects the A/C efficiency, that is what I am trying to stop from happening. That is why I was wanting to know if anyone knew of a single fan that is more efficient than the stock fan that would not be a pain in the ass to install or connect up. Thanks. Don