Drive motor issue

We are using two 269 motors to drive our robot and the left side motor dies after about 30 sec. of driving
what could cause this problem? How can we fix it?

How heavy is your robot, what garing are you using, and what size wheels?

I saw you post in that older thread about this and it seems to me that they basically answered your problem for you. It is likely you’re stalling the motor because you’re trying to drive too much with it. Answers would be to add more motors or gear it for torque (or less speed) and you’ll probably see results.