Alfa romeo 159 sportwagon 1.9 jtdm 150 hp turbo pressure irregular

[rodcraft86]

guys I open a post to explain a problem seemingly out of the sensor turbo on an alfa 159 1.9 diesel 150 hp, from idle up to 2000 rpm, the turbo pressure behaves in an irregular manner, the needle rises and falls in sudden and irregular, and the car has a jerking, if you speed up the whole problem disappears, it is only with a drizzle of gas, according to you, what can? be? it has 80,000 km on the active

[klajdin]

The car ? Ori ? the pressure, have you checked with a manometer or with a diagnosis ? checked to see if the VGT regular function ?
the seghettamento ? a sign of a possible problem to the EGR

[legendaryslave]

Let us a nice log-pressure turbo objective and real, the mass intake air, rail pressure, egr, so we can take a very precise direction

[jolidj]

and you . without diagnosis nn any part broken pipes, or stuff like that??
if modified and then mail everything .

[beppe.c]

replace,clean, or go back to the map you will see that solve.

[beppe.c]

sorry I meant l egr.I ? happened already several times.

[rodcraft86]

ok guys, I do a complete diagnosis com mes and I will keep you all aware of this, what kind of parameters should I check exactly? there are precise values of reference to be followed?

[michele30]

turbo pressure , mass air, opening of the egr valve by these parameters, you should already see the problem.

[saetta]

Hello all, according to me ? the egr valve,if you decide to change it, in any case, thoroughly clean the support egr,the air ride that is created behind the egr valve,many times is not clean even with egr valve new.