Date registered: Sep 2013
Vehicle: 2007 s550 sports package, 2006 r350 4matic, 2003 s500 4matic
Location: Dallas Texas
Mentioned: 0 Post(s)
Quoted: 17 Post(s)
Loud squeal after changing balance shaft
Hello gentlemen. I just picked up another 06 r350 4matic from Mercedes benz auto techs of Waxahachie Texas. The tech replaced two new fuel pumps, the balance shaft, transmission front pump, intake tumbler flaps, new battery and lost key after stage four cancer diagnosis. The car hadn't been started in almost 2 years. He told me that he took the passenger side valve cover off to add something so it wouldn't squeal but I don't recall what due to the excitement of getting a good deal. He also said something about some bearings. He left a couple of bolts out of the valve cover and I had to replace upper pulley. I had the key made and started the car with no belt and the car made a very loud squealing noise while running. Kinda sounds like metal rubbing or a really loud pulley. Didn't sound good at all so I killed it immediately hooked up star. P0300 misfiring (cel) p0301 p0303( cel) p0302 p0303 p0563 voltage too high ( battery charger). p2505 voltage at relay circuit 87 is too high. po304 misfire in that order. Anyone had this problem? Or have some insight? if so Please advise me on how to proceed.