Going to try this, My company has had my work truck in to the Benz dealership numerous times but no luck so far and a few parts have been changed.
Hello, I have a 2014 sprinter
cargo truck with the V6 diesel engine. We have several of the same trucks just older model years.
Mine....starts, warms up fine. As I drive throughout the day, it begins to idle erratic at stops. Idle will fall and engine "hiccups" if thats the best way to describe it. It does this and occasionally it will just stall and I have to restart the engine.
There are also times where it just cranks and will not fire up right away, but it eventually always restarts.
It seems to drive fine, no issues at high speed 60+mph, however i do notice it lacks acceleration power that our similar 2012 model has.
No check engine light, No stored DTCs and the mechanic says there's nothing that jumps out at him. The high pressure pump has been changed, fuel filter changed, and.....it doesn't do this all the time, there are times it will idle fine then all of the sudden just die at a stop. There's times where it runs fine, but lately its been getting worse.
It seems now that as soon as the engine is up to temp the moment I drive somewhere and stop at a red light, the idle goes up and down up and down with that engine "hiccup" so to say. I often have to rev it to 1.5k to 2k to keep it from dying in the middle of a busy intersection.
Sorry for the rant?? any thoughts or insights? It only has 41k miles on it so far
Any input is appreciated.