We have a 09' Niss Murano...in relatively great shape. 168,000 mi. An acceleration issues has been surfaces though. When driving and pressing the gas between 1000-1500 rpm the vehicle seems to hesitate or not pick up momentum, and then after several seconds of this it will break through and acceleration will kick in. I feel like it happens more on inclines but my wife suggests that it happens routinely. Regular maintenance has been completed on the vehicle, we've never towed anything, we only use a bike rack 2 or 3 times a year and I'm hoping it's something I may be able to tackle myself. Any help would be great.