yesterday i was driving my car home, going down the interstate at about 75-80, when i started hearing a loud knocking noise, i thought first it was a rod knock, but i kept reving the motor and it wasnt going with engine speed, tried pushing the clutch in to see if it had to do with the tranny, but kept doing it. then i was thinking it had something to do with the driveshaft. well, when i was getting off the interstate(around 40mph) it just stopped doing it, so i speeded back up, and no noise. im really concerned about it so i dont want to drive it till i can figure something out, im stumped. any suggestions?
