Quote: Originally Posted by safedude I have an 04 length. I'm hearing a loud whining noise that seems to be coming from underneath.
I hear it loudest at about 50mph. It's definitely speed related it raises in frequency as I speed up and lowers when I slow.
It's very loud and medium to high pitched at it's loudest. It's definitly not rpm related and not brake related. Is it the first signs of the transmission going out?
Or how about the driveshaft bearing? You need to crawl under your van and take a good look for problems with the drive shaft center bearings. Also it would not hurt to raise the rear and check the rear axle and u-joints.
Controls electronic door module operation. A simplified control system for operation of the mode, showdown, and temperature control actuators provides positive positioning without the complexity of electricity from position sensors.
I doubt that this is going to be a transmission issue. For the most part when a transmission starts to fail I see shifting or slipping issues. Does the sound change when you are going up and down hills at the same speed?
Why this part is important is because if the tensioner goes, the cam chain can slap around within the mercedes vito gearbox noise, tearing off bits of the plastic that are there to help guide it and protect the metal. The usual noise for a tensioner getting worn is a loud usually consistent ticking on the upper right side of the motor, similar to noisy loose valves.
Hope this gives you a place to start looking, Wayne.
Mercedes Rumble strip sound (RSN) during slow acceleration (w209,w203 etc.)
Hello Iv just bought a Mercedes Vito with 72k on the clock. Very happy with it so far apart from its horrible to drive! Im having issues with. I'm hearing a loud whining noise that seems to be coming from underneath. I hear it Is it the first signs of the transmission going out? Shifting.