Ad hoc wireless infrastructure less network which access multi-hop because data communication is established by using multi-hop techniques, generally the ad hoc works different nodes like mobile, sensor, vehicle, laptop, router etc. MANET (Mobile Ad hoc Networks) is collection of independent mobile nodes which communicate through wireless link from source to destination either single hop or multi-hop because no need of central control using self-configuring, infrastructure less and dynamic nature of MANET it can lead more flexibility and more economical also robust network due to temporary devices. Multipath is one of un-avoided concept of MANET they lead to easy communication between two nodes using intermediate hops due to problem of obstacle in active path or network this types of topology is very flexible share information through different paths, they build the topology using topology discovery mechanism and Network library. When the new packet in comes, identify all the paths from source to destination based on algorithm and select the path, the effect of multipath model most of the channels we do not have a single path from S to D the samples of various path is different samples due to collision, misbehavior attack that lead to degrade network performance like delivery ratio, throughput, overhead, energy and delay. In this paper we plan to overcome the above drawbacks we proposed the novel design fuzzy controller through on-demand routing protocol and implement and tested using various parameter such as packet delivery ratio, throughput, remaining energy routing overhead and packet loss using one of leading simulator called Network Simulator.