There are 5 mounts total. There are two in the front down near the wheel wells on each side, one on the top of the tranny, one near the power steering pump, and then one between the tranny and firewall down low. The last one is the biggest pain in the ass. You can only check it if you get underneath the car and look up.

Just check for severe cracking and broken rubber. The two in the front are most likely to go first, but the tranny one either on the top or down low could be your problem.