Hello. Opel Vectra C 2004 1.9 dth 150 km. 280 thousand km. The car does not go up to 2.5 thousand turns. What was checked and done:
1. Computer diagnosis - when driving from approx. 1800 rpm Charging pressure approx. 2.4 bar, and the turbine beats 1.5 bar, only at 2600 rpm. the pressure increases to 2.2 bar and continues to increase. Occasionally, error p0234 will appear positive pressure control circuit
2. The intake manifold with flaps works properly during the computer test (it was changed in 2014 to a new one)
3. The Egr valve is also ok. During control it rises and lowers and is tight (also from 2014 and a gasket with four holes). At the test, he was blinded with a metal plate, unchanged.
4. Intercooler and snake all but skipped for a trial, nothing helped.
5. Turbine control valve in working order, vacuum to the valve about 0.8 from the valve to the turbine about 0.5. Substituted for trial the second working the same. Airtight hoses.
6. The flow meter measures well. A second functional one was tested, unchanged.
7. Dpf saturation 35%, I don't remember the pressure difference now. For the test, the pipe behind the catalyst was detached and the test drive, unchanged.
8. Checked the timing, correctly positioned, the lock on the upper shaft and the crankshaft cap all fit
9. Manifold pressure sensor cleaned.
Initial diagnosis: turbine problem.
10. The turbine inserted after regeneration, test drive and geometry stood up. The turbine removed blocked the steering wheels on the amen. Inserted a second turbine from another source also after regeneration ... there is still no force from below. The set pressure does not reach and these 2.2 bars are only after 2.5 thousand / rev even about 3 thousand / rev. reaches.
Personally, I do not believe in these regeneration of turbines, I have had a few cases that the regeneration turbo did not go from below, I put on a new turbine or ory. used and power returned. But the client here insisted that the turbo will deliver after regeneration and that is how it looks at this moment.
There is no hole leak in the IC leads.
Many other things were checked, what I recall I will write.
Hands fall down and no ideas. I am asking forum members for suggestions on what else to check.
1. Computer diagnosis - when driving from approx. 1800 rpm Charging pressure approx. 2.4 bar, and the turbine beats 1.5 bar, only at 2600 rpm. the pressure increases to 2.2 bar and continues to increase. Occasionally, error p0234 will appear positive pressure control circuit
2. The intake manifold with flaps works properly during the computer test (it was changed in 2014 to a new one)
3. The Egr valve is also ok. During control it rises and lowers and is tight (also from 2014 and a gasket with four holes). At the test, he was blinded with a metal plate, unchanged.
4. Intercooler and snake all but skipped for a trial, nothing helped.
5. Turbine control valve in working order, vacuum to the valve about 0.8 from the valve to the turbine about 0.5. Substituted for trial the second working the same. Airtight hoses.
6. The flow meter measures well. A second functional one was tested, unchanged.
7. Dpf saturation 35%, I don't remember the pressure difference now. For the test, the pipe behind the catalyst was detached and the test drive, unchanged.
8. Checked the timing, correctly positioned, the lock on the upper shaft and the crankshaft cap all fit
9. Manifold pressure sensor cleaned.
Initial diagnosis: turbine problem.
10. The turbine inserted after regeneration, test drive and geometry stood up. The turbine removed blocked the steering wheels on the amen. Inserted a second turbine from another source also after regeneration ... there is still no force from below. The set pressure does not reach and these 2.2 bars are only after 2.5 thousand / rev even about 3 thousand / rev. reaches.
Personally, I do not believe in these regeneration of turbines, I have had a few cases that the regeneration turbo did not go from below, I put on a new turbine or ory. used and power returned. But the client here insisted that the turbo will deliver after regeneration and that is how it looks at this moment.
There is no hole leak in the IC leads.
Many other things were checked, what I recall I will write.
Hands fall down and no ideas. I am asking forum members for suggestions on what else to check.