From under the hood, twist off the cover behind the headlight, then turn the collar that holds the bulb in place. Remove the bulb and replace it, reversing the above directions. DON'T TOUCH THE GLASS ON THE NEW BULB, DIRT OR GREASE WILL CAUSE IT TO BURN OUT QUICKLY.
could be the blower motor, a fuse, or a bad wire.
Subaru 2.5 liter engine has a problem with head gaskets. If you have not had your head gaskets replaced, that is the first thing I would suspect.
Lots of things. You have not given enough information to answer the question. First please describe what you mean by "acceleration problems".
Love.
A worn belt will cause a squealing noise. The squealing noise is caused when the belt slips. Tightening the belt will temporarily fix the problem.
Check the belts. The most common cause of squealing is a worn or loose belt on the front of the engine.
gravity
lack of oil
When refilling the oil some may have dripped onto the belt which would cause it to start slipping badly and squealing loudly.
A loose or glazed "fan belt" is a very common cause of squealing. A quieter squeal is produced by brake linings that are almost worn through.
Turning the steering wheel farthest left or right for a few seconds will cause a loud squealing.