Mobile Ad hoc NETwork (MANET) is a collection of mobile nodes without any centralized administration. These nodes collect the information through overhearing and store information in route caches through routing protocol. When the route cache freshness is absent, it leads to the stale route information resulting in pollution caches. If the node overhears the packet to another node, node's energy consumption occurs unnecessarily. The main goal of this paper is to reduce the effect of overhearing and avoid the stale route problems while improving the energy efficiency using the Efficient Source Routing Scheme (ESRS) algorithm. Due to the lack of route cache update, the stale route entry and overhearing is originated among the network.