Locate problem with 2007 Frontier, 114000 miles.
2007 Frontier 4.0 V6 with 114000 miles. Recent tune up and replaced # 3 coil. New air filter and air intake cleaned. AT 38 to 42 mph, the truck bucks like fuel system is problem. It only bucks (stutters) at that speed range. Transmission has been checked and ok. Does not show an engine light. Can anyone respond that may know the problem? Thanks. Don