ok i was on the highway... the engine started bogging down like losing power, then would kick back in then it did it agian. i could smell rubber. i had it towed to my house. i noticed when i tried starting the engine agian that the gear where the top of the timing belt goes over wasnt turning but everything else was. i tried turning it with a wrench it would move slightly till it stopped and i couldnt budge it at all. theres plenty of oil in it. i just had the alternater and fuel pump replaced... and now this please help. i dont know what to do, or what needs replacing NOW