Please bear with me for asking what so many others have. I have read every thread I can find on LHM, loss of acceleration, no boost, etc. that I can find on this forum. I found lots of threads with similar problems, but very few posted exactly what solved their issue. Mine started two months ago when I found a lot of gunk on the intercooler to intake turbo hose. I cleaned it off by spraying brake cleaner on the hose. I didn't spray any components intentionally. The gunk just ran off the hose and it was clean. Two days later I start the van and take off. Immediately LHM, no codes. I came back and changed the hose and everything was fine. Two weeks later, I had loss of power again. I changed the other turbo hose, no help. When I bought the Sprinter, I had installed the turbo resonator eliminator, so I knew it was the resonator. For me, that only left the EGR. I ordered a new one, installed it. Problem solved and it drove fine. Two hundred miles later, I am on the interstate trying to change lanes. I get an opening and mash the throttle and I didn't have the normal turbo acceleration. It drives fine, no smoke, no codes and turbo boost works up to about 4000 rpm's and then it flattens out. I have since changed the MAF, MAP Sensor (Boost Pressure), Intake Air Temperature Sensor, and fuel filter. Today, I removed the 200 mile EGR valve and was surprised at how much soot was on it. Is this normal (see photos)? While out, I connected the harness and turned the ignition off then on to see if it clean cycled. It made noise and then made one partial sweep. I connected my old EGR and it made several sweeps. I buy all of my parts from Europarts and they are OEM. Could I have a bad new EGR valve? Is there a way to test it? I appreciate any help.
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