Join Date: Oct 2015
Location: North Central Arizona
OK... one more "way out there" cause might be a melted spot on the belt. If somebody nailed the gas from a stop (after assy at the dealer) you may be hearing a binding on the secondary as the belt width changes. As you get up to speed, it might go away or be less noticable, except for a little surge around 10-15 mph. If no surging, your belt is likely OK. That would be easy for the dealer to diagnose. If I were betting spendola though, I'd be looking close at the secondary. They need to pull the cover and go through both pulleys and belt with a fine toothed comb. They can put a stethoscope on drivetrain parts while the machine is on blocks and find the source pretty easily. Might be a bad bearing in the transmission shaft but, those are generally really trouble free. The motor and geared transmissions on these vehicles are pretty bullet proof. The pulley and belt system are the main culprits but they should be pretty quiet when new.
I met an older guy at the post office one day in his 800 Ranger. He asked me how I liked the 900. He said his transmission sounded like it was going to explode the day he got it home and that was ten years ago. Still making goofy sounds. Still works like the day he got it. But you want a quiet one!