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[Vectra C] [02-08] vectra sri cdti loss of power????

Discussion in 'Cavalier, Calibra, Vectra, Signum, Sintra & Insignia owners forum' started by bmw_1975, Aug 14, 2010.

  1. bmw_1975

    bmw_1975 New Member

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    Location:
    leeds uk
    hi guys car been back to garage today and they still cant find any problems!!!! i need help!!!, vectra 2004 3.0 v6 sri cdti, car drives fine until i accelerate hard then the light which is picture of a car with spanner through it comes on and i get a massive loss of power the car seems to go into some sort of "limp mode" if i turn the car off and wait aprox 30 seconds then restart the engine the light as gone and the car drives normal again until i acelerate hard then problem is back, garage have had it on machine and shows "no codes present" the guys have checked all pipes and say no splits,, so now i,m totaly confused some people have sugested egr or maf but i,ve been told if this was the case the ecu would have stored codes or the engine light would constantly be on?? please can any one shed some light on this??????? thank you.
     
  2. iulian1971

    iulian1971 Active Member

    Messages:
    379
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    Location:
    Bucharest / Romania
    Drives:
    Astra Mk5 1.3 CDTI hatchback
    Hi.
    Look what I found:

    Field Remedy: 1957
    Subject: Engine Y30DT, High Pressure Pump - Lack of power during acceleration
    Models: Engines: Option:
    Vectra-C 2003...2007,Signum 2003...2007 Y30DT| Z30DT,Y30DT| Z30DT
    Complaint: Engine lack of power during acceleration. During investigation with TECH2 a pressure drop between actual rail pressure and desired rail pressure is visible.
    Cause: Blocked suction control valve (SCV) within the high pressure pump.
    Production: Modified production process (earlier changing of manufacturing tools, improved cleanliness) implemented at supplier. Countermeasures were implemented with engine number 69692 (01.09.2006).

    Remedy:
    Before carrying out Technical Service Bulletin 1957 update ECU with modified software as of TIS 2000-DVD, version 76 (a modified software regarding high pressure diagnosis was implemented, improved DTC: P0093 detection).
    If the DTC still occurs refer to the following snapshots in datalist 2 "NOK I". The snapshot shows an increased fuel flow restriction within the fuel feed circuit.
    1: desired fuel pressure 2: actuel fuel pressure
    We recommend to disconnect the fuel lines from the tank to the filter, blow them by compressed air (in disconnected condition) and finally to replace the fuel filter assembly.

    The snapshot in datalist 2 "NOK II" shows a constant drop of actual fuel pressure and identified the suction control valves (SCV) failure.
    1: desired fuel pressure 2: actuel fuel pressure

    In case of an identified suction control valves (SCV) failure replace both suction control valves (SCV) of the high pressure pump as discribed below.
    Important: - During the complete procedure it is obligated to work in a clean environment. - Prevent contamination at SCV area. Small contaminations, which cannot be seen by eye, can cause major problems on engine performance. Particle size of 0,3 mm, can be already critical! - Do not use gloves. - Do not use SCV in case it has been dropped. - Make sure that pressure in the system is released before loosening the pressure connection pipe between pump and rail. - Disconnect battery after failure checking procedure. Wait for a few minutes before starting SCV replacement procedure in order to prevent any system action.

    Good luck.
     
  3. bmw_1975

    bmw_1975 New Member

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    Location:
    leeds uk
    just got car back , they took off the pipes to check for splits couldnt find any so they put the pipes back on . and touch wood for some reason the problem as now gone??? fingers crossed this as cured it sumhow!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! :)
     
  4. Anne2.0DTi

    Anne2.0DTi New Member

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    Location:
    London
    I have the exact same problem and no one can help me either. Mine is a 2.0 diesel, had the machine plugged in 3 times now but no codes stored, checked all the pipes but nothing. At some point they thought it would be the turbo but no it isn't.
    It's very annoying and frustrating!!!
    Hope yours is sorted out now!

    Anne
     
  5. bmw_1975

    bmw_1975 New Member

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    Location:
    leeds uk
    Well light back on today under hard acceleration in 3rd gear got it to garage with light still on and they got a fault code this time. P0105. Map sensor abeiant pressure sensor. He said it's a common fault that be solved by cleaning boost pipes and manifold pressure sensor. But to be honest I've tested the car and under normal driving it's fine I can make the eml come on only if I take it right up to it's rev limit in 3rd or 4th and that said the garage av suggested to leave it as it's not a serious fault because it was the eml would stay on constantly.
     
  6. iulian1971

    iulian1971 Active Member

    Messages:
    379
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    14
    Location:
    Bucharest / Romania
    Drives:
    Astra Mk5 1.3 CDTI hatchback
    I gave you the remedy. Why don`t you try it ?
     

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