W220 S320 Limp Mode

[cmarksmith]

Hope someone might be able to help. Whenever my 2000 S320 is put under load either by depessing the accellerator hard or by pressing it further into kickdown the engine misfires and goes into reduced power / limp mode. Everthing resets again when the ignition is turned off then on. I am getting fault codes 300 to 304. So far I have replaced the MAF, the oxygen Sensor for Bank 1 and the fuel filter with no discernable effect. Can anyone advise me on the potential source of the problem and the possible solution. Many thanks, Mark

 

[television]

Hello and welcome, coil packs come to mind if breaking down under load, it should only be one if it is that

 

[mt10argyll]

Hi

My 320 cdi did exactly the same turned out to be the turbo
that was replaced under warranty which was nice, that cured
the problem

 

[tromppost]

If you accelerate hard does it misfire after changing up gear? if so check the fuel jet for that cylinder.