c220 cdi engine management light on and lack of power

[gerf22]

hi all, just yesterday i was driving along at about 70mph and then the engine management light came on. Also i found that when trying to overtake it was lacking power!!!! Can anyone help before taking it to the dealer:sad: cheers rob

 

[Aussie Nick]

hi all, just yesterday i was driving along at about 70mph and then the engine management light came on. Also i found that when trying to overtake it was lacking power!!!! Can anyone help before taking it to the dealer:sad: cheers rob

This raises suspicions that the MAF is faulty. Try disconnecting the Mass Air flow Meter by taking off the electrical plug attached to it and give the car a run to see what happens. Unfortunately our good friend and expert on these matters Malcolm ( Television ) is no longer with us as a member so I am posting what I think he would have recommended in relation to this problem. Come back with the results and someone maybe able to assist you further.

 

[gerf22]

hi, cheers for the reply. Disconnecting the MAF sensor didn't seem to make much of a difference. Might take it out and give it a cleane and see if that helps. Is there anything else which is common for causing this problem???? cheers

 

[Aussie Nick]

I am at a dead end Gerf . I will give this thread a nudge in the expectation that another member may be able to assist.
Aussie nick

 

[BlackC55]

You dont have to take it to a dealer. A independent like me can help. It will need the faults reading first before guessing.

 

[gerf22]

Hi, i connected my diag machine to it and its come up with the code- P0299 (turbo underboost)!!! Any ideas what the cause of this might be???? cheers

 

[colechelle]

sounds like the waste gate sticking and venting, check very carefully your turbo pipes, they have a habit of spilting but hard to find, normally the top one going into the inlet!!