Originally posted by awhell
Man you guys are the sh!t i'm gonna try all these things guys and I'm pretty sure you'll all be right ! but on that note i also must mention that it vibrates when in gear and this is all the time(except when accelerating cuz then you can't feel it too much !!!)
humm... now this could be many things but ill give u a line up to start checking, start with the most obvious and work ur way to the more difficult, oh and this is assuming uve got a manual transaxle btw, could be one of these or a combination of stuff.
Only when in gear:
tires out of balance, or not properly inflated
worn cv joints (see if they click when u turn ur wheel all the way to one side while driving slowly in circles, if so they need replaced)
rough wheel bearings, damaged drive axles
if it vibrates out of gear,or with clutch depressed:
idle turned too low
exessive toe in,
incorrect spring heights with out a camber kit fixing ur camber,
broken motor mount,
more extreme:
motor mount broken,
cylinder compression off due to a blown gasket,
dead cylinder,
cap and rotor worn incorrect or not firing cylinder,
damaged or malfunctioning spark plug or plug wire,
clogged fuel injector.