knocking sound

[Gustang]

about 3 months ago i could hear a small knocking sound in the back end of the car but only when i went over bumps. but now its happening all the time even when i start the car, it sounds like something is hitting the bottom of the car anyone had this happen.. or have any clue where i could start looking?

 

[AaRoN]

your exhaust is probably loose. hittin' your suspension somewhere

 

[95-stang]

Yep, exhaust especially if it does it on start up.

 

[94Pro-5.0]

i had the same problem. rubbed on my driveshaft and rear lower control arms.

 

[MuscleInc1320]

had the same problem....turned out to be my exhaust rubbing on the driver side

 

[Trickflow.GT]

muffler on the inside of the body....