The kid has said \ "like when you put the air conditioning \" not to take it and that it is the compressor to give it the pull, and the electro shows much less than the compressor.
The car pulls black smoke in long climbs? For example mountain ports?
Because if so, it is easy for it to be the EGR that is seized and open or that you have some air sleeve from those who go from the turbo to the intercooler or the intercooler to the lazy or cracked admission collector. So when the turbo blows, the slit opens and loses air, this causes the engine to throw black smoke (it shows why the car culera stays smoked and the left pilot too). And because until the switchboard compensates as the failure, the engine wrinkles a little.
If this is what happens to you, a pssssss will also be heard from the air blowing out of the tubes when you are climbing or when you accelerate strong.
In the case of the EGR, nothing weird is heard, only that the engine pulls more smoke than normal and is little.
All the best.