2023 MERCEDES-BENZ Sprinter 2500

I had tuned up my sprinter van around 64000 miles. I put new ngk spark plugs and ignition coils on it. Ran for a day then. The codes said the number one ignition coil was bad. Change that out and it ran for about 8000 miles. Then stated to go in lymph mode again. I decided to replace them with original Mercedes spark plugs and Ignition coils. But when I put them in the van had no power and was jerking. It was doing this before I changed them out. It had no power and would barely go up a hill. I researched and seen certain Merecedes Sprinter vans from 2021 to 2023. Had a recall on the fuel pump. But I don't understand why my van wasn't included. It's showing all the systems them the fuel pump or something to do with the fuel pump is going bad. I changed the spark plugs and ignition coils twice in less than 3 months.

Occasionally, the idle speed of the engine will drop to 400 rpm. When this happens, the vehicle does not respond to throttle input. If it happens in a parking lot, you can shift into park and coax the rpm higher, then shift to drive and move on. When it happens in the middle of an intersection while waiting to make a left turn, the story is very different. You can end up in a very dangerous situation. This has happened to me multiple times. I have not had an accident, but I have upset other drivers when I failed to clear an intersection in a timely manner. Knowing that the car will move when you press on the accelerator is critical for safely operating a vehicle. I purchased the vehicle new in October 2024, but did not start driving it until February 2025. The first incident happened about a week after hitting the road. It has happened many times since then. It took me an embarrassingly long time (months) to realize the problem was a low idle. The symptom I observed was that the vehicle failed to respond to the accelerator. That is the symptom that people will notice and that is the symptom that should be matched. It can be scary when it happens. Now that I know that it is brought on by low idle, I can watch for it and be prepared, but it can still leave me in a bad situation.

I was facing west in the left turning lane to turn south into my community. The vehicle lost power when I was cutting across oncoming, east bound traffic. The vehicle lost power two more time after that once I was in my community. No warning light or any other indicators. The vehicle just went limp. I almost didn't make it clear of oncoming traffic.

At 3,000 miles, my 2023 Van (purchased new) developed significant reduction in power and acceleration. The transmission also shifts incorrectly (too late, resulting in higher then normal RPM's) and then abruptly downshifts upon stopping. When going uphill, the van obtains a max speed of about 35-40MPH, forcing me to travel on the local Interstates on the shoulder with my hazards flashing so other vehicles know to pass me. Van was left at Mercedes Dealership for 1 month. Van was not repaired, no plan or remedy was communicated. Van has only been inspected by the dealership where it was purchased. A check engine light came on about 1 week after van lost power.