so my car has been running fine for a little over a week and then the car started to feel horrible. i would be on a red light and my car would start shaking and the exhaust now sounds way different. the exhaust noise sounds like wen ur sitting in an SUV on the highway an u only open the back passenger windows and it creates that horrible noise and vibration through the car( cant explain it any better sorry). i hear a ticking noise which i think is coming from the distributer. could the distributer be the problem? 350 tbi 91 rs