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Diagnostický případ
Opravené vozidlo
Martin Adámek
Engine stalls while driving
08.10.2019
| aktualizováno
08.10.2019 13:30:36
14x
Informace o vozidle
| VIN: | VF1FDB2H638148412 |
| Výrobce: | Renault |
| Model: | Master II |
| Rok výroby: | 2007 |
| Kód motoru: | 2,5 dCi |
| Typ motoru: | G9U 754 |
| Výkon (kW): | 74 kW |
| Převodovka: | Manuální |
| Palivo: | Diesel |
| Najeto: | 431 000 km |
Jak se závada projevuje
Nefunguje / funguje nesprávně. The Glow system warning light turns On and the engine stalls. If the ignition is switched Off and the engine restarted it takes about 8 seconds before the engine starts and the vehicle is drivable again. The vehicle drives until it stalls again.
Jak často se závada projevuje
-
Sporadicky / za specifických podmínek.
- Za jiných podmínek. While driving
V jakém systému se závada vyskytuje
- Motoru.
- neukládá žádný chybový kód
- během jízdy
- [DF053] Rail pressure regulation function , positive loop difference
- [DF226] inlet flap circuit , short circuit
- [DF228] Brake information ,conerence with reduntant brakes
- trvalá závada
- sporadická závada
Doposud provedeno bez úspěchu
The vehicle was brought in from another workshop that I know:The following points were done by them:
1 - Fuel injectors & fuel pump sent for testing - OK
2 - Fuel rail replaced with a new part
3 - The fuel pump DRV valve was replaced
4 - Fuel rail pressure sensor was replaced
5 - They installed a fuel can directly to the fuel pump to eliminate the low-pressure circuit - no change
6 - They ran out of ideas on what to do
After this, they brought the vehicle to my workshop.
1 - I connected a Scantool and logged the engine RPM and fuel - the fuel pressure dropped sooner than the engine RPM
2 - I now connected an oscilloscope and recorded the following values - CMP & CKP sensors, rail pressure and the DRV valve. The oscilloscope recorded the same problem and that is that the fuel pressure always drops as the first value.
Does anybody have an idea what to measure with an oscilloscope to eliminate individual components? I don't understand why the fuel injectors and fuel pump were tested as OK.
