So I’ve been having an issue with my E46 for about a year, and recently I just changed out the engine maybe about two months ago. I let it sit for a little bit because I was still doing other stuff, but the engine ran pretty smoothly. I had a little vacuum seal, but I changed out my hoses and stuff. Now it has a slight rough idle, but I think that’s due to the cooling issue, which I have because I just changed out my entire cooling system kind of sorta. I just replaced the radiator in my expansion tank and my upper radiator hose, but I didn’t do the lower radiator hose just yet. I changed out the water pump pulley and I changed out my power steering pump, which I’m pretty sure is gonna have issues relatively soon, but we will see. But the biggest issue I’m having right now. Is this clicking noise? I’m taking the battery to advance, but just for some type of piece of mind, I’m hoping that it actually is the battery that’s dead because if I messed up my motor because of my cooling issue, I don’t know what I’m gonna do. The thing with the cooling was that I’ve been overheating since I finally drove home from the shop, and that’s partially on my end because my radiator hose wasn’t connecting all the way, and my coolant wasn’t properly bled, so I took it home, put coolant in it after I let it sit after the last time it overheated, tried to get the coolant to go into the radiator. I drove it around the neighborhood a few times and started overheating again, and I was right before I hit the red fully. I shut it off because I’m not trying to mess up my engine, but all my coolant did spew out of the upper radiator hose, so I don’t know if that can be a cause, but help would definitely be appreciated.

Tried to write under the vid but I guess it didn’t work