Miles?
How many miles do you have on your car? If it is around 60k or 120k it might just be tiem to change all your belts and do everythign else with the 60k tune up...A friend on mine on his VR-4 whenever he hit about 122k his belts started screachin like a damn banchee, did the 120k tune-up and BANG good as new...god luck man