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Thread: 1.3 cdti help!!

  1. #1
    Regular Member the-wizard's Avatar
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    Default 1.3 cdti help!!

    A friend has a corsa 1.3 cdti 05/06 rg and has been told it has a barometric pressure sensor fault or theres a difference in pressures between the turbo & the inlet manifold, vx seem to think the turbo has gone!!, the car drives well and pulls as it always has with no smoke and good fuel consumption, sounds like they are bumping the costs up!, ANY ideas would be greatly appreciated.

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    Regular Member paul wingnut's Avatar
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    they are proberly right m8 if its got tc of p0108 the turbo waste gate sticks giving you over boost meaning barometric press not plausible with boost press the fix is to change turbo not that expensive i think 150 plus vat hope this helps..

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    Regular Member the-wizard's Avatar
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    thanks for the reply!, he cant understand it cos its running great apart from having the fault light on all the time, im going to put the code reader on it tomoz and see if i can help any!, will try to locate any sensors and do any cleaning required, along with checking wires and vacum pipes,

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    Regular Member alanv6's Avatar
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    Check out the boost pressure sensor first, they are prone to give the wrong readings and give a code of, (boost pressure high pressure), this is because the boost sensor is reading about 10kpa out and gives the ecu a too high reading on boost..

  5. #5
    Regular Member the-wizard's Avatar
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    done some code reading today and general readings with car ticking over.


    Vehicle VIN xxxxxxxxxxxxxxxxxxxxxx
    Identifier:0x2423
    Total number of fault codes: 1
    P0106 - Barometric Pressure not plausible with Boost Pressure
    (0F) - Present.



    PC based diagnostic tool
    Date and time>,21/07/2010. 15:55
    Workshop information:
    Ursu

    Selected model>,2006,Corsa-C,Engine,Z 13 DT
    Control Unit:
    Keyword #1: EF
    Keyword #2: 8F
    Normal timing parameter set.
    Measuring blocks information:
    Battery Voltage,14.1 V
    Ignition Status,On 12V
    Main Relay,Active
    Fuel Pump Relay,Active
    APP Sensor 1 (Accelerator Pedal Position),0.96 V
    APP Sensor 2 (Accelerator Pedal Position),0.47 V
    Calculated Pedal Position,0 %
    APP at Idle Position (Accelerator Pedal Position),Active
    Desired Idle Speed,850 RPM
    Engine Speed,850 RPM
    Camshaft Speed,425 RPM
    Idle Speed Offset,Inactive
    Idle Speed Modified,No
    Normal Engine Operating Temperature,Inactive
    Coolant Temperature,76 °C
    Coolant Temperature,0.75 V
    Fuel Temperature,36 °C
    Intake Air Temperature,33 °C
    Intake Air Temperature,2.12 V
    Ambient Temperature,18 °C
    Mass Air Flow Sensor,23 kg/h
    Mass Air Flow Sensor,1.67 V
    Barometric Pressure,99 kPa
    Barometric Pressure,3.71 V
    Boost Pressure,81 kPa
    Boost Pressure,1.53 V
    EGR Valve (Exhaust-Gas Recirculation),Inactive
    EGR Pulse Ratio (Exhaust Gas Recirculation),0 %
    Desired Common Rail Fuel Pressure,25.00 MPa
    Common Rail Fuel Pressure,25.60 MPa
    Rail Pressure Control Valve,76 %
    Actual Injection Quantity,5 mm3
    Actual Injection Start,1 °CA
    A/C Information Switch (Air Conditioning),Inactive
    A/C Pressure (Air Conditioning),768 kPa
    A/C Pressure (Air Conditioning),1.18 V
    A/C Relay (Air Conditioning),Inactive
    A/C Cutoff Mode (Air Conditioning),System OK
    Fan Relay 1,Inactive
    Fan Relay 2,Inactive
    Fan Relay 3,Inactive
    Glow Time Relay,Inactive 12V
    Diagnosis Glow Time Relay,Inactive
    Brake Switch 1,Inactive
    Brake Switch 2,Inactive
    Clutch Switch,Inactive
    Vehicle Speed,0 km/h
    Vehicle Speed in Cruise Control Range,- - -
    Cruise Control Tip Switch,- - -
    Malfunction Indicator (MI),Off
    Service Vehicle Soon (SVS) Indicator,On
    Glow Time Telltale,Off 12V
    Oil Level,Normal
    Engine Oil Level Status,Okay
    Remaining Oil Life,128 %
    Engine Oil Change Warning,Active

  6. #6
    Regular Member benny's Avatar
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    bara is atmos presh so its 98 and the boost on that data is 89 so you have a deprestion could be a stuck waste gate ..or faulty turbo ....

  7. #7
    Regular Member the-wizard's Avatar
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    Cheers for that!, where or whats the best way forward,(testing wise) any ideas ?, many thanks.

  8. #8
    Regular Member cphaza's Avatar
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    kinda stumbled accross this post and thought i would pass on what i have found during several investigations on this engine at work.

    Fault has always lay with one of three things: (1)The MAP sensor being faulty or dirty (2)the egr not shutting so when the revs build up, too much exhaust gas flows back into the inlet or (3) Wastegate stuck shut/not opening enough thus creating extra pressure. Fault code is p0108. I would say most common is gunged up MAP sensor, but we are seeing more and more wastegates not functiong. they seem to be 05/06 post office vans too!!! to much stop start i guess. Never hurts to clean egr and map as a matter of course anyways. Same as the vec's realy!

  9. #9
    Regular Member the-wizard's Avatar
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    Quote Originally Posted by cphaza View Post
    kinda stumbled accross this post and thought i would pass on what i have found during several investigations on this engine at work.

    Fault has always lay with one of three things: (1)The MAP sensor being faulty or dirty (2)the egr not shutting so when the revs build up, too much exhaust gas flows back into the inlet or (3) Wastegate stuck shut/not opening enough thus creating extra pressure. Fault code is p0108. I would say most common is gunged up MAP sensor, but we are seeing more and more wastegates not functiong. they seem to be 05/06 post office vans too!!! to much stop start i guess. Never hurts to clean egr and map as a matter of course anyways. Same as the vec's realy!
    Just noticed this thread re-apear!, just to clear this up, the fault i found in the end was a faulty boost/map sensor, a replacement cleared it no probs. cheers all.

  10. #10
    Ex Vec-C Admin ed taylor's Avatar
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    So much for VX and the need for a new Turbo "eh".

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