Why does the ford edge make a rattling noise when accelerating?

A rattling noise while accelerating is a pretty common problem especially on the Ford Edge. You usually hear this noise when accelerating the vehicle. And that's also why You hear the pinging and rattling noises. Some of the causes of this condition are improper fuel octane, engine overheating, improper ignition timing, the EGR valve not functioning properly and problems with the computer or knock sensor. The EGR valve is important as it recirculates finely metered quantities of exhaust gas to the engine intake system for increased engine efficiency, reduced fuel consumption and lower NOx emissions. The average cost for EGR valve replacement is between $340 and $430. Labor costs are estimated between $90 and $110 while parts are priced between $250 and $320.