We stopped at a sign and there was a loud pop and now the car will start but it will not accelerate at all and the car rolls freely unless someone is holding the break

What is your question?

Before this the car would shimmy between 45-55mph the car is 2005 Mitsubishi endevour.

How long has your 2005 Mitsubishi Endeavor had this problem?

The car hasn’t moved in 2-3 months