Exhaust Popping/Snapping Noise When Vehicle is Hot, at Idle or Immediately After Vehicle is Shut Off (Replace Straps on Muffler Heat Shield)

Some customers may comment on a popping/snapping noise from underneath the vehicle at idle or immediately after the vehicle is shut off. Some popping/snapping noise from the exhaust system during cool down is a normal condition.

The noise may be intermittent depending on the outside temperature and or temperature of the exhaust system at the time of testing.

As the exhaust system warms and cools, the muffler and the muffler heat shield expand and contract at different rates. The straps currently used to hold the exhaust shield in place may not be crimped tight enough to stop the muffler heat shield from moving.

Replace the straps on the muffler heat shield.

For vehicles repaired under warranty, use: