i get in my car and start her up, in neutral, then for a second or two it has a weird vibration that shakes really bad and then it goes away, 5 minutes later im at a stop light in neutral again and then it happens for another 2 seconds, starting to think its tranny related or sumthin in that area, i know my clutch throw out bearing is out though. anyone know WTF is going on??

 

Sure its not engine related? As in a misfire?

 

double post, please drive through..

 

nope, its not a misfire, more like a grinding noise etc....

oh yah i just changed my diff mount too the other day, but im pretty sure i tightened all the bolts on the driveshaft and all that good stuff, hope that helps.

 

At idle in neutral the drive shaft should be static... Wonder if the pilot bearing is trashed..

 

i think its my tranny mount, i went to the mazdatrix website and i found a page filled with symptoms and solutions for trouble shooting here http://www.mazdatrix.com/g2.htm , hope that helps anyone that has the same problem as me.