Radiator fan wont turn on without ac + ac problem
My radiator fan won't turn on unless I turn the ac on. Once I turn the ac on, the fan will turn on and stay on even if I turn the ac off. That seems to be my work around for now. I haven't done this when the car is cold, only when it's hot. I'll do any other tests you guys suggest as long as I have the tools/ability to do it.
My second "problem" is with the ac itself. I use my ac literally 3 times a year at the most so it may be completely normal, I don't know. When I turn the ac on, theres like a grinding noise behind the dash or in the engine bay. I THINK it eventually goes away. I don't know why but for some reason it's hard for me to tell. My exhaust is pretty loud so that doesn't help. When I pop the hood I don't hear the grinding noise, but I hear a low pitch whine. When you look at the bottom left of the engine block, I think whats called the tensioner will move back and fourth every few seconds. It isnt wobbling like it's loose, it's like it engages and disengages. When it moves one way, or "engages", it makes the whine. When it "disengages", it goes away and sounds normal. It's not a squeal at all. The belt looks good.
I drove home today at about 60-70 mph at 2.1k rpm and the temp got to 215 and then 220 in about a mile of city driving. Popped the hood when I got home and the fan wasn't spinning. Turned on the ac for a few seconds, turned it off, and the fan was running. It was 45 degrees outside so I really want to get this fixed by summer. One thing I noticed, the grinding noise does not appear if I turn the ac on while the car is in the ON position and the engine is not running.
Thanks for reading my wall of text. I looked up the grinding problem and there was only one thread I saw and it didnt get resolved. There were a good amount of fan threads but not specifically like my problem.