well i need some help pinpointing were my noise is coming from. sounds like its coming from the rear left. its kind of a mix between a click and a thump, we'll call it a clump for now. its pretty loud at slow speeds and happens at regular intervals. but the kicker is it goes away sometimes and gets quieter/higher frequency the faster the car is moving. also, its louder when i press the gas pedal, so it has something to do with engine load. ive had the back left tire off a couple times and can't find anything wrong. at this point i'm kinda guessing the half shaft or diff. any guesses?

 

Not sure how useful I can be in this diagnosis, but I have a couple questions:
-How is the noise level with the clutch in while moving? (does it change noise level/frequency with speed?)
-Same as above, but with the clutch in and transmission in neutral?

 

for both of those questions the answer is the noise almost goes away, but not completely. when the vehicle is under load at low speeds noise is the loudest