I just bought a 94 yj , first issue was sputtering when just barely accelerating , thanks to reading posts here I replaced the tps and that problem is history , now for new problem and I cant find anything in here for it. my jeep is all stock and not lifted. when I accelerate hard from a stop I get a vibration that feels like it is coming from the rearend , but only lasts for a second then goes away , theres no other time I feel the vibration only during hard accelation from a stop , and only for a few seconds. any thoughts ? also this is my first jeep and so far love it. thanks for your time.