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307 HDI 110 low boost level

Discussion in 'Diesel Chat' started by rd070707, 9 February 2012.

  1. rd070707

    rd070707 Tuner

    Messages:
    79
    Location:
    ni
    Car:
    Peugeot 307
    Hi guys I have a 2002 307 2 litre 110 hdi . I have had a few problems with the car since i bought it which led me to remove the dpf and have it removed from the ecu. After I did that I had turbo problems which i recently resolved but soldering a broken wire to the turbo electrovalve. Now the car has no antipollution fault and is no longer in limp mode but I still feel it is underpowered.

    What can I check now that could be lowering the boost?
    Or will the car just need time to clear out with driving?
    I was considering a remap but want to wait until I know the car is running 100%. Any suggestions?
     
  2. HDi fun

    HDi fun TC Professional

    Messages:
    13,153
    Location:
    Buckinghamshire UK
    Car:
    Passat 2.0 TDi 170
    Agreed. Don't remap until you have the engine operating properly.

    You could try disconnecting the battery for an hour or so to clear the ECU's short term learning data.
     
  3. rd070707

    rd070707 Tuner

    Messages:
    79
    Location:
    ni
    Car:
    Peugeot 307
    Do you think that would help considering i have no fault on peugeot planet?
    I can imagine it could be a loost connection or a hose clip or something?
     
  4. HDi fun

    HDi fun TC Professional

    Messages:
    13,153
    Location:
    Buckinghamshire UK
    Car:
    Passat 2.0 TDi 170
    It's worth a go because it's free. If it was an electrical connection you'd have a Anti-pollution fault up.

    A loose hose would probably whistle loudly but it's not out of the question.
     
  5. rd070707

    rd070707 Tuner

    Messages:
    79
    Location:
    ni
    Car:
    Peugeot 307
    yea il try disconnecting the battery. The car is very reeky when revved so im guessing is very blocked as the turbo has not worked due to the car being in limp mode for a long time
     
  6. HDi fun

    HDi fun TC Professional

    Messages:
    13,153
    Location:
    Buckinghamshire UK
    Car:
    Passat 2.0 TDi 170
    Does it smoke under full load?
     
  7. rd070707

    rd070707 Tuner

    Messages:
    79
    Location:
    ni
    Car:
    Peugeot 307
    sorry what do you mean full load?
     
  8. Jakeymd

    Jakeymd The Torque Meister

    Messages:
    1,348
    Location:
    Ashbourne
    Car:
    Ford Focus 2.0 TDCi
    Low revs (1000-2000) and full throttle. Or I also believe it's your peak torque.
     
  9. rd070707

    rd070707 Tuner

    Messages:
    79
    Location:
    ni
    Car:
    Peugeot 307
    it might smoke a wee bit at low revs but it'll smoke heavily between 3000-5000 revs. i guessed this was because limp mode restricted this for so long?
     
  10. HDi fun

    HDi fun TC Professional

    Messages:
    13,153
    Location:
    Buckinghamshire UK
    Car:
    Passat 2.0 TDi 170
    It might be a bit furred up yes.
     
  11. Jakeymd

    Jakeymd The Torque Meister

    Messages:
    1,348
    Location:
    Ashbourne
    Car:
    Ford Focus 2.0 TDCi
    Have you checked your air filter? If this is clogged it will restrict the air flow possibly causing it to smoke?
     
  12. rd070707

    rd070707 Tuner

    Messages:
    79
    Location:
    ni
    Car:
    Peugeot 307
    air filter literally just changed. oil filter and oil to follow
     
  13. Jakeymd

    Jakeymd The Torque Meister

    Messages:
    1,348
    Location:
    Ashbourne
    Car:
    Ford Focus 2.0 TDCi
    Not sure what else to suggest. Give it a good run to really increase the engine and exhaust temperatures and see if it clears out
     
  14. rd070707

    rd070707 Tuner

    Messages:
    79
    Location:
    ni
    Car:
    Peugeot 307
    it drives very average for what it is. The car boosts in lower gear but the in 3rd to 5th there isnt much response
     
  15. HDi fun

    HDi fun TC Professional

    Messages:
    13,153
    Location:
    Buckinghamshire UK
    Car:
    Passat 2.0 TDi 170
    Clearly it's not under-fuelling given the fact it smokes. Have you been over things such as the mass air flow sensor?
     
  16. rd070707

    rd070707 Tuner

    Messages:
    79
    Location:
    ni
    Car:
    Peugeot 307
    no i havent checked it. what does it do and where is it located?
     
  17. PedroS

    PedroS Torque Junkie

    Messages:
    172
    Location:
    UK Swindon
    Car:
    G. Scenic 2.0 dci
    after the air filter and before the turbo (between them). you should see a plug somewhere in the hose . thats the maf.
    other thing i can think is the egr valve dirty and not closing properly?
    can you check if boosting levels are normal on the 3rd to 5th gears?
     
  18. rd070707

    rd070707 Tuner

    Messages:
    79
    Location:
    ni
    Car:
    Peugeot 307
    could you clean the sensor or would it just need replaced? would a faulty sensor not throw up a fault code on pp2000 (diag)? and about the egr - the car does idle a bit rough at the start which i think is a symptom of a dirty egr or am i wrong?
     
  19. Jakeymd

    Jakeymd The Torque Meister

    Messages:
    1,348
    Location:
    Ashbourne
    Car:
    Ford Focus 2.0 TDCi
    Could be something. get it cleaned then blanked off to stop it happening again. It should improve power too, because it will stop exhaust gas being recirculated, which is only good for reducing emissions
     
  20. PedroS

    PedroS Torque Junkie

    Messages:
    172
    Location:
    UK Swindon
    Car:
    G. Scenic 2.0 dci
    some say the maf can be cleaned but the results are next to no good.
    a faulty sensor should send a fault , but there is a chance of not doing it yet...
    can the diagnostic tool check the egr cycle on your car? rough idle is one symptom yes.
    you can either blanke the egr as Jakeymd said or clean it.
     
  21. rd070707

    rd070707 Tuner

    Messages:
    79
    Location:
    ni
    Car:
    Peugeot 307
    I have been considering blanking it anyway when i get the remap done but would i need to check and clean it first?
     
  22. PedroS

    PedroS Torque Junkie

    Messages:
    172
    Location:
    UK Swindon
    Car:
    G. Scenic 2.0 dci
    if blanking no need for cleanings...
    but you still need to be shure whats wrong with the engine.
     
  23. rd070707

    rd070707 Tuner

    Messages:
    79
    Location:
    ni
    Car:
    Peugeot 307
    well my gut instinct would tell me the lack of boost would be coming from a pipe split or clip, or something like the sensor messing up. The turbo solenoid valve could be blocked? I fixed the cable to this valve which clearly wasnt functioning until I soldered the connection to it, so could it be blocked up?
     
  24. PedroS

    PedroS Torque Junkie

    Messages:
    172
    Location:
    UK Swindon
    Car:
    G. Scenic 2.0 dci
    wich year is your car? the turbo is a vnt ?
    best option as i said is to check the turbo pressure with the diag. tool if this is possible.
     
  25. T9 man

    T9 man TC Founder Moderator

    Messages:
    16,292
    Location:
    London, UK
    Car:
    Saab 9-3SS T9
    When are you able to check if the turbo solenoid valve is blocked?
     
  26. rd070707

    rd070707 Tuner

    Messages:
    79
    Location:
    ni
    Car:
    Peugeot 307
    well i could take it off but can i open it up?
     
  27. rd070707

    rd070707 Tuner

    Messages:
    79
    Location:
    ni
    Car:
    Peugeot 307
    its 2002. i could get the turbo pressure checked on peugeot planet but what would that tell me?
     
  28. PedroS

    PedroS Torque Junkie

    Messages:
    172
    Location:
    UK Swindon
    Car:
    G. Scenic 2.0 dci
    get the diag. tool pluged in and go for a drive with someone having a look at the pressure gauge. check if pressure is good and steady.
     
  29. PedroS

    PedroS Torque Junkie

    Messages:
    172
    Location:
    UK Swindon
    Car:
    G. Scenic 2.0 dci
    is the turbo accessible ? can you touch the geometry mechanism (without danger to you) ?
    i cant remember the words in english...
    get someone on the driver seat (handbrake on!!!) and ask to step on the throtle.
    can you feel the "lever" moving ? should moove nicely and smooth.

    http://www.youtube.com/watch?v=Gc2awh0O0Bc
     
  30. rd070707

    rd070707 Tuner

    Messages:
    79
    Location:
    ni
    Car:
    Peugeot 307
    the turbo is behind the engine so not easily accessible
     

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