I have a 95' SE-V6 Pathfinder with 150K on the odometer. It was never a rocket, but lately it seems to be 25HP shy at low RPM. Once it gets up to about 3000 RPM it seems to come alive. I found a vacuum hose that was loose (repaired), cleaned the throttle body, and put in some injector cleaner but to no avail. Any ideas?