Yea I do have bov it’s not humming sound I don’t know how to describe it but it makes a weird sound when I get on it this started yesterdayCan't pick out the humming noise but do I hear BOVs?
Nah the ac was off at time when doing that pull but the fan could be on cause sometimes the car automatically turns it on when it get hotI could hear what you're talking about. Did you have the fan running on the inside? It kinda sounded like the blower motor for your AC/Heater