BlueFlameEbo

Hello everyone, so recently i brought my 2013 3.5 ecoboost SCrew 4x4 with 108k truck into a shop to have the AC compressor swapped. I picked it up today and have been experiencing the sound in the video i attached below(humming whining noise) only on accelerating with the AC on. Along with this noise I’ve noticed the cooling fan under the hood short cycling turning on and off every 10-30 seconds(only when ac is set to on). When ac is off truck runs fine and makes no noise. Could it be the charge in the ac system is off overcharged/undercharged? Or maybe a bearing or something with the clutch? Not sure what the problem is but it’s annoying as heck! Don’t really want to make trip back to the dealer a state over if it can be fixed at home! Please help has anyone ever experienced this/fixed this issue?
PS: it doesn’t sound like a belt to me personally and the fact the cooling fan is short cycling leads me to think it’s not the belt that’s making the noise.

gdykstra1@telus.net

Hey there, I wouldn’t mind your help. I have the identical noise in my truck. Can you tell me what you did to fix it and what was wrong with it? Would be eternally grateful.

BlueFlameEbo

bad ac compressor from the scrap yard was installed to replace my broken ac compresssor lol. Essentially swapped out a broken compressor for a almost broken compressor. Won’t be going back to that shop

gdykstra1@telus.net

ahhh, that sucks. So you ended up just put a new compressor in?

BlueFlameEbo

exactly. noise went away and fan stopped short cycling hope this helps

gdykstra1@telus.net

Perfect, thanks, not sure how long mine will go it's on and off but I should probably order a compressor, apparently they are a month away. Thanks again.