99 escort feels funny when I stop

I have a 1999 escort that drives just fine....but lately I have been noticing that it feels weird everytime I stop. It kinda sounds like if the engine is going to fall out or something...like if it shifts or moves. I'm not sure what is going on but I hope it's not a big problem. Anyone know what it might be?

Thanks...Adriana

I have a 1999 escort that drives just fine....but lately I have been noticing that it feels weird everytime I stop. It kinda sounds like if the engine is going to fall out or something...like if it shifts or moves. I'm not sure what is going on but I hope it's not a big problem. Anyone know what it might be?

Thanks...Adriana

When was the last time this car was tuned up with plugs wires fuel filter pcv valve?

It had its last tune up this last March (2005).