W164 ML280 MAF or ??
- Thread starter Crawford
- Start date
After another 40 miles, the car continued to drive well but @DSM10000 the CEL has now come on. The codes are P2009 (Intake manifold air control actuator) and P0101 (MAF/VAF - range/performance problem). Fuse 104 remains intact, but haven't tried reconnecting the EGR yet - got too dark! Will do that one tomorrow.
My thoughts are that i may have the swirl motor problem too, which can be "fixed" with a resistor. More annoyingly, P0101 means that the MAF sensor i just fitted hasn't worked.
Hope there is some other interpretation!!
My thoughts are that i may have the swirl motor problem too, which can be "fixed" with a resistor. More annoyingly, P0101 means that the MAF sensor i just fitted hasn't worked.
Hope there is some other interpretation!!
- Joined
- Jul 12, 2011
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- 15,480
- Location
- Near Salisbury
- Car
- MX5 1.8 Sport, Range Rover 5.0 SC, BMW X1
I had similar issues with my OM642 and had conflicting advice (not from here) and codes.
I unplugged the EGR and, like you, had an improvement in response but, eventually it set a CEL.
The EGR valve on my car had seized but in addition I also had a fault with the exhaust back pressure sensor.
- Joined
- Jul 12, 2011
- Messages
- 15,480
- Location
- Near Salisbury
- Car
- MX5 1.8 Sport, Range Rover 5.0 SC, BMW X1
I tried cleaning it but it made no difference. A new (MB part) sensor and new EGR valve sorted it.
- Joined
- Jul 12, 2011
- Messages
- 15,480
- Location
- Near Salisbury
- Car
- MX5 1.8 Sport, Range Rover 5.0 SC, BMW X1
Nowhere near the expense of a RR! We have a Supercharged 5 litre one
All modern engines and especially diesels will need sensors etc replacing as they age.
The back pressure sensor was circa £50 from memory.
W1ghty
MB Enthusiast
You still haven’t done all the free basic stuff buddy , so don’t panic at this stage .
I think "panic" i about the right word. I always feel nervous with these "new" cars that the problem will prove to be something amazingly complex or expensive. With the classic stuff i spend more time on, you just have to listen to it and can quickly think through the small number of possible issues. I am trying to stay up-to-date, but it is quite a change of mindset!
