Hello Scotty,

I have a 2001 Mazda 626 Lx, the whole car is constantly vibrating when I am at a light and gets worse if I turn the A/C on. Once i start driving its normal but only happens when at idle... I have already replaced all engine mounts and Harmonic Balancer and the issue continues... Please help!!

if it's an automatic, put it in N, and if it stops, do that, it would mean the torque converter or tranny is weak and they cost a ton