I beliveve I have a bad EGR Valve or it needs to be cleaned out. Th ecar has over 200000 miles on it and althought it runs fine most of the time, lately it is going into " limp mode" Does anyone where the egr valve is so I can clean or replace. Pictures are helpful
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Hi My EGR carboned up on my car (E320 CDI 2005)and I lost power on and off. No codes came up. I googled the trouble and they said try cleaning the EGR I was on vacation and with the tools I had in my trunk I was able to clean the carbon out of it . It is on the back of the intake manifold it is controled by a motor. It carboned up again after a few thousand miles so I ended up replacing it at about $400. I didn't upgrade the software just changed to EGR and had no problems after 10,000 miles.
Hi I don't know about the blue tec engine but my experience with EGR valves is they all carbon up and I've had 5 Mercedes diesels. They are easy to clean, remove 2 screws and disconnect the wire, pull it out spray some brake cleaner on it and lubricate the motor shaft with high temp lubrication. I've reused the gasket. I was in bumper to bumper traffic when it first happen and the car showed no codes on the dash not even a check engine light. The car had no power. I babyed the car to my destination and googled the trouble and had it fixed in about a half hour. It carboned up again and not wanting to get stranded in a place I couldn't fix it I just replaced it myself. Saves the trouble of cleaning it every year or so. The replacement EGR has a different design so maybe it will last longer. Hope this helps Al
Hi Well I hope that the ultra low sulphur diesel is the cure. I'll let yous know if the replacement EGR carbons up as I replaced it last year . I know it will be the first place I will look if I get the loss of power issue again. Thanks Al