So i am making my first long distance trip in my zx3 that i bought about 5 or 6 months back, and before i leave i am making sure all general maintenance all small parts that need to be replaced are done so my car is running its best. I will be driving through some mountains for about 50 mins at one point and i know its hard on a car to run the ac driving in the mountains. Problem is like i posted a long time ago that my fans only kick on when my ac, or heater is on. I know my car has started to heat up because 0f not having the fans kick on in a drive thru before, and once i went to the mountains in my old truck and the grade caused it to heat up quite a bit, so im thinkiing before i go i should get this issue fixed. I know that fan resistors are a big issue in causing the fans to not turn on when the ac/heaters not on. But the only part my local auto store has is a blower motor resistor, and not a fan resistor, just checking these two parts are different correct? And is there a possiblity the blower motor resistor could be the issue also? Please lmk what i need, i drive a 01 zx3 with a 2.0 zetec.