Thanks everyone for your replies to my idle hopping issue. I'm still investigating & tinkering on that one. My next Q is a little lgr in scale. When I'm cruising between 50-65mph,in 4th or 5th gear & I let off the gas I get a pretty good noise out of the tranny, kind of like a grinding noise & it happens more when in 5th gear(probably because I'm going faster?) If I feather off my foot from the gas pedal it doesn't happen as much. What do ya think? Bad tranny? Going bad? Thanks for the time! -Noel- p.s. she is a 2.6, 5spd, (Borg warner?)4ze1 engine w/supposedley 30k on a rebuild. Thanks