With only 33,000 miles the rear end of my 1997 E350 super duty RV howls whenever it's under load, either steady speed or accelerating. Much quieter when you back off. If you start from a stop you can hear a faint whirring noise from the rear that once you are over 50mph become a howl.
Googling around a lot of answers suggest the ring and pinion are worn out. Can that happen in 33,000 miles?
Monday, April 3rd, 2006 AT 12:16 PM