i've got my 2k1 sentra for 4 months now and have experienced some weird squeaking noise from my gas pedal. when i step on the gas pedal from idle, the pedal would make squeaking sound like the ones made by doors. i first experienced this problem 2 months ago and brought my car to the dealer and they fixed the problem by lubricating the joints. but last wk i've experienced the same problem again and i'm just wondering if there's something wrong w/ the joints or what. i don't wanna go to the dealer every 2 months. can anyone help?