Vibrations..

[jro909]

i seem to get this vibration heard and felt through the panels and dash at low rpms when the trucks semi cold..i can't figure out what it is..the trucks sound no problems, it seems to come and go between 800 rpms and 1000 rpms

[Nytemare]

i seem to get this vibration heard and felt through the panels and dash at low rpms when the trucks semi cold..i can't figure out what it is..the trucks sound no problems, it seems to come and go between 800 rpms and 1000 rpms

Did you check your exhaust hangers? Thats where my vibrations are comming from...I have a cracked hanger on my driver side pipe...I have duals...

[jro909]

will check tommrow, its starting to get to the upper 50s here and it doesen't do it, only when its colder out....any other thoughts on what could do it? i'm missing a bolt on my driver side exuast manifold(i'm putting it off until next oil change, its not leaking) could that be doing it?

[Nytemare]

will check tommrow, its starting to get to the upper 50s here and it doesen't do it, only when its colder out....any other thoughts on what could do it? i'm missing a bolt on my driver side exuast manifold(i'm putting it off until next oil change, its not leaking) could that be doing it?

Could be the cold man...rubber mounts get cold and get hard, than driveline vibrations are transmitted through the metal.