What was found
ON FLIGHT 3084 THE CREW REPORTED THAT AFTER TAKEOFF PACK 2 VALVE CLOSED & RESET AND IT CLOSED AGAIN. A STRONG ODOR WAS PRESENT IN THE CABIN AT SAME TIME. WHEN THE PACK 2 BLEED 2 WAS TURNED OFF THE ODOR DISSIPATED. DEFERRED AIR CONDITIONING PACK SYSTEM -2 PER MEL 21-29. FOUND HEAT EXCHANGER HOSE COUPLING AND TUBE FROM DUAL TEMPERATURE CONTROL VALVE SEPARATED. R&R PACK 2 HOSE COUPLING AND CLAMP IAW ERJ 140 AMM 21-51-02. NO LEAKS DRTECTED. MEL CLOSED. THE AIRCRAFT WAS RETURNED TO SERVICE.