After having a jump to the battery my car now.

Where is the humming noise coming from on your car? Also have you had your alternator and battery tested?

It seems as if the whole story is somehow abridged here, what is the whole story from the very beginning please.

I agree there is something missing.

I have been trying to help I asked where the noise was coming from because I cqant track it down myself?I also asked if the alternator was charging?Do you have a multimeter to do some testing?Were here to help.

Just to put my word in, when you go to the Subaru dealer, tell them the same story you told us and see if you get satisfaction. This is not about ego, it just points up one of the reasons auto repair gets a bad name, the story is abridged, the owner get frustrated, and they blame the repairing technician or facility. Best of luck with your Subaru.

The engine has many different moving parts in it. "There's a humming sound from my engine" can be dozens of different things. If you can narrow down WHERE in the engine compartment the sound is coming from, since we're not there to hear it, we can help.

It is not your fault, you haven't offended anyone, explaining noises can be one of the most difficult symptoms to describe. You are doing the right thing by trying to find out what could be wrong before you take it into the dealer. With the car in park and the parking brake on, If you have some one that can rev the engine while you stand in front of the engine compartment with the hood open, try to listen for the general area of the sound. It would help narrow down the possibilities. Drive belts can make a strange noises as well as idler pulleys. See if the sound changes when you turn on the air conditioner or the heater. Also look to see if anything looks like it has been knocked loose and is touching something that is turning on the motor like the belts and fan. Sometimes your engine fan acts like a vacuum and it sucks up debris that is on the road. Remember to wear some safety glasses. We will do our best to help, we apologize we haven't been much help yet, but we will keep trying.

If you have a 2-3 foot piece of hose or tubing, you can use that to really narrow the source of the noise. Hold one end to your ear and slowly move the other end around the engine. The noise will appear to get louder as you get closer to the source.

I should have mentioned this in my first post.

We are here if you need us I have helped even showed a blind man how to put to put on spike spiders which is a type of snow cleat for tires when I worked at the saturn dealer.