my car just started vibrating bad mostly when the ac is on. i also feel it through the clutch pedal. with the air off it doesnt do it much. also it is mostly at idle and stops at a crusing speed. it does not seem to get faster with rpm. wtf is it!?

 

it also seems to do it more when the car is warm

 

if it stops when the clutch pedal is depressed, then most likely it's the throwout bearing. common occurance, at least for '03s.

 

if it was clutch related why does it do it at idle without the clutch engaged?

 

Found it! I have no idea how this happened but it did..... Something busted the **** out of the fan. When the AC goes on the fan goes on.... When the AC is off the car only uses the fan at idle when hot... LOL The exact issues I was having.