I just noticed that right after I start the car (when cold), I hear a humming noise coming from the rear of the car. It lasts about 2 seconds and then stops. I don't here it any other time. Is it just the fuel pump? The car has about 1,000 miles and I don't recall hearing this noise before. Thanks.

Also, I asked the question before but wanted to see if I could get some more input. When I come up to a stop light and apply the brakes, as soon as I come to a stop, I feel a vibration in the brake pedal and steering wheel (when stopped, the car idles fine). Is this the result of a 4 cylinder engine and its tendency to have more vibration then say a 6 cylinder?