I just heard weird noise under the hood while I was driving on the interstate. The noise is like buzzing or rustling for a few seconds every time when I push gas pedal or release it. It is likely related to gas pedal or throttle body, but it doesn't affect engine performance. Just unpleasant noise. Do I need to lube gas pedal or throttle linkage? I would appreciate member's advice. I feel like the gas pedal is spongy.