Hi,

I have the above-mentioned car year 2000. It is petrol v6 E320. As it stands it is running very badly, on idle it is sometimes ok but then changes do a very slight roughness. once in drive the car will move but if the accelerator pedal is fully pressed then I loos all power. 12 new spark plugs have been installed and 2 catalysts have been replaced at great expense. The car is also drinking excess fuel. Any idea what may be causing this? would a faulty transmission cause this? I woudlnt have thought so as it can be very rough idling on cold. Thius problem occoured when the suspension cup was replaced after standing for a while. 

Comments

Profile picture for user MercedesMedic
Is your check engine light on? Without reading the codes it is hard to tell. Two things that are common problem on that car that I would check are: 1. mas air flow sensor 2. Pedal accelerator sensor
Profile picture for user Mani1981

For the record, this problem was solved with a mass air flow sensor. The car was back to normal for a while but now when the accelerator pedal is pressed it has started feeling sluggish again. Firstly can you recommend a universal conversion OBD2 plug i can use on this car

Profile picture for user MercedesMedic

Do ecu reset by pressing the gas pedal for 30 seconds. Search for exact instructions online. Sometimes calleded Mercedes 722.6 transmission reset procedure. 

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