One problem related to brake popping noise has been reported for the 2007 Dodge Nitro. The most recently reported issues are listed below.
Replaced my brakes and rotors and had them bled. Ever since, the brake goes down close to the floor to take effect. Also makes a popping noise in the middle lower console when the brake is applied. Safety issue for sure. On the suspension, every time I hit a bump or uneven surface it makes a lot of noise underneath the vehicle.