today when i pulled in my driveway i noticed my car was running alittle funny after driving it for about 10 minutes. When im stopped and let off the brake about half way the car slightly jolts forward over and over. When the car is stopped (either in park or drive) i noticed the car shakes more also, not only that but when i drove it to see what was wrong my exhaust sounded different...almost slightly restricted like alot lower groan when i hit the gas. Any thoughts? thanks alot guys

 

vacume leak?

 

what other problems could it be?

 

MAP or 02's, just a thought

 

coudl it be a spark plug went bad from running to rich?