CChudalla

Well I am having a bad viberation mainly while accelerating it starts at around 3000 rpm and gets really bad in third gear with a high pitched hum and only in third every other gear only has the vibration and only when in gear it goes away out of gear or with the clutch pushed in this just started out of nowhere no noise just came to a stop after a 20 mile drive and when I took off it was doing it I love my runner but she is driving me crazy with this I'm hoping its not the trans but at the same time I hope it is I have a lead on a r151