Hey guys hope someone can help, got a 02 Focus 1.6 auto. Theres an odd rattling/vibrating noise when accelerating, it sounds like the heat sheild rattling but defo aint that. It gets noisier when revs get higher. Ive held engine on jack to rule out engine mount. Noise sounds like its coming from alternator/aux belt area. Any help appreciated. Noise doesnt change in gear or neutral