ok so i posted something on here earlier about my clutch slipping but i still got 1 person saying its not my clutch. here is the problem. my car is 100000% in gear and say i am crusing on the highway in 5th then i need to acccelerate for some reason. my car revs up but my car doesnt go any faster and seems like something is not catching in my tranny any ideas what it could be is it my fly wheel or what?