My 2000 ML320 with 89,000 kms misfires at high rpms in combination with heavy throttle/loads. For example, cruising at 120kph it's ok, but if I step on it to pass, the engine misfires until I let up on the throttle. It feels similar to a bad spark plug, ok normally, but fails under heavy loads.
I had it to the dealer back in Novemeber, they replaced the MAF sensor while still under warrenty, but found no codes. This improved the problem, but it was still there. They also checked for a plugged exhaust/catalitic. I wanted them to change the plugs at the time, but they said they felt it was not the problem.
Now that I'm out of warrenty, I don't want to be paying for their experiments in resolving the problem.
Has any one experienced something similar, and what did you do to repair the problem.
thanks...........brian
I had it to the dealer back in Novemeber, they replaced the MAF sensor while still under warrenty, but found no codes. This improved the problem, but it was still there. They also checked for a plugged exhaust/catalitic. I wanted them to change the plugs at the time, but they said they felt it was not the problem.
Now that I'm out of warrenty, I don't want to be paying for their experiments in resolving the problem.
Has any one experienced something similar, and what did you do to repair the problem.
thanks...........brian