Mercedes Archives

Mercedes Diesel Engine Exhaust Leak

This particular Mercedes diesel engine model is a 2008 and emission controlled. I can say for sure that any exhaust leaks on an emission controlled engine will create not only an engine code but also derated performance. Once the code shows it’s ugly icon on the dash nothing really feels different until over time it… Continue reading Mercedes Diesel Engine Exhaust Leak

Mercedes MBE EGR Cooler

The EGR cooler on this MBE 900 diesel engine developed a massive exhaust leak. The cause was the rear elbow at the cooler had worked it’s way out of the housing which caused the problem. This produced a lot of wear at the EGR cooler housing where the steel sealing rings sit. There’s not going… Continue reading Mercedes MBE EGR Cooler

Diesel Engine DPF Replacement

If you have ever worked on a diesel engine with emissions you’ll recognize the part featured in the photo. It’s a sooted up DPF (diesel particulate filter) cartridge. This one was giving us some trouble with an engine code that pops up when the turbo boost is not at the proper level. The cause of… Continue reading Diesel Engine DPF Replacement

Mercedes Diesel Engine Code 2631

This is another Mercedes diesel engine MBE 900 post. These engines are keeping us busy. Just when we get one code repaired another one comes along. Tonight while working on the engine in this video one of the drivers walked in to the shop and reported an engine code on his dash. It’s another MBE 900 that… Continue reading Mercedes Diesel Engine Code 2631

Mercedes Diesel Engine Turbo Code Repair

Turbo Boost Performance Code Mercedes Diesel Engine The “turbo boost performance” code is the fussiest one of all with Mercedes MBE 900 diesel engines. It involves several different checks on the sensors, EGR, intake throttle among other basic checks. When I see an engine with this code I know it’s going to cost us a… Continue reading Mercedes Diesel Engine Turbo Code Repair

Mercedes Diesel Engine Wiring Problem Part 2

This is part 2 of a previous video I posted here that showed me wiggling the harness to make the engine quit. It didn’t work but the engine did cut out a couple of times. This video shows you the actual wire that is at fault. It’s a grey14 gauge wire that runs power to… Continue reading Mercedes Diesel Engine Wiring Problem Part 2

Mercedes Diesel Engine Wiring Problem

The diesel engine in the video is a 2007 Mercedes MBE 900 and it was shutting down on the road unexpectedly. The operator would be driving under several different conditions when it happened. We found the harness where the fault wire was located. Of course the engine did not die for us but you can… Continue reading Mercedes Diesel Engine Wiring Problem

Mercedes MBE 900 Engine Brake Repair

Mercedes Engine Brake Repair One of our sports run buses has an engine hold back problem when coasting down hill. The Mercedes MBE 900 has an exhaust brake and an engine brake. Used together they really work well and you can feel it while driving. The engine brake is called a “Constant Throttle Valve” or… Continue reading Mercedes MBE 900 Engine Brake Repair

Mercedes MBE 900 Electrostatic Oil Separator

Replacing the Electrostatic Oil Separator When you get an EOS (electrostatic oil separator) code on an MBE 900 Mercedes diesel engine the only remedy is to replace it. Since it is integral with the engine valve cover the complete valve cover assembly is replaced. This is costly but this is only the second one we’ve… Continue reading Mercedes MBE 900 Electrostatic Oil Separator

Mercedes MBE 900 Diesel Engine Emission Codes

Exhaust Temperature “Too High” Engine Code With emission systems their main purpose is to remove soot and NOx (nitrogen oxide) from the engine exhaust system. In the process of doing this the DPF (diesel particulate filter) gets the worst of the tar and gum like substance that accumulates on the filter.

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Tag: Mercedes