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Peugeot 407 SW 2.0 HDI 136 FAP - No power and intermittent jerking

blade9999 37266 11
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  • #1
    blade9999
    Level 11  
    Hello all,

    I have a problem with my Peugeot 407 2.0 HDI 136HP. The car has very little power, today I also traveled 407 with the same engine only a sedan and there is no comparison. Pulls forward like crazy, and my mulatly muli.

    We have done a ride with my friend lexia and attach the results of measurements. Is there anyone able to help in their interpretation?
  • #2
    Falco76
    Level 25  
    No messages are displayed after the car has been started? The liquid to Fapa is?
  • #3
    User removed account
    Level 1  
  • #4
    blade9999
    Level 11  
    KotBury2 wrote:
    It seems that even they were not taken while driving, but at a standstill, gasping the engine? Such readings can, as the saying goes, be put in ... because the control computer perfectly selects all "clearances" when the engine is not loaded.

    You need to take the diagnostic laptop to your knees and drive along the street, as the bosa commanded and to save a number of comparative parameters, such as in the example table.


    I have no idea how you came to the conclusion that I was "gassing at a stop" instead of driving. I'm not a moron and I know that the car behaves differently under load than in the case of what you called "gassing at a stop." That's why I've pasted a graph that contains parameters that seemed important to me at the time of measurement. If you can not help on the basis of these parameters, write what is missing and test again.

    However, I do not understand how data from the report that is generated for a given second would help in diagnosing the fault. In which specific moment should I generate a report or take a screenshot? At 2500 rpm? At 3000 rpm? Or maybe at a stop?

    The mechanic who knows the common rails has spread his hands, that's why I write on the forum to get as many tips as possible where I should look for the cause. I do not count on you solving a problem with my car, but I hoped that based on the data provided and your rich experience (judging by your posts) you will at least be able to indicate the likely cause, e.g. turbo, egr, flow or vacuum. The more so because I have already seen your posts, where on the basis of a simple description of the problem you gave some possible reasons.

    Anyway, I attach reports that I generated over 2 weeks ago. I hope they will shed some light on this matter.


    Falco76 wrote:

    No messages are displayed after the car has been started? The liquid to Fapa is?

    No messages are displayed, fluids were added ~ 40kkm ago. According to the ASO, fap has about 35kkm of life, can it be the reason?
  • #5
    T5
    Admin of Cars group
    The flow meter trims the dose.
    This can be seen in the charts from the first post.
    It would be more legible if you started logging in, from 1500 rpm in the 3rd gear with gas in the floor. Up to 4200 rpm.
  • #6
    blade9999
    Level 11  
    T5 wrote:
    The flow meter trims the dose.
    This can be seen in the charts from the first post.
    It would be more legible if you started logging in, from 1500 rpm in the 3rd gear with gas in the floor. Up to 4200 rpm.


    I changed the flowmeter from my colleague's car and the charts were identical, so it's probably not. I also replaced the map sensor, because it turned out that it had a broken plastic tube, but it also did not help.

    I noticed, however, that something on the cold engine goes a little better. I know, I will not check it to cut off because I feel too bad for the engine, but at lower revs it's like working better than warm one. I also noticed that the turbo sometimes slows down despite the gas being in the same position.
  • #7
    T5
    Admin of Cars group
    blade9999 wrote:
    I changed the flowmeter from my colleague's car and the charts were identical, so it's probably not.

    In that case, it's time to look into the EGR valve.
  • Helpful post
    #8
    User removed account
    Level 1  
  • #9
    blade9999
    Level 11  
    I was on the site today dump and turn off FAP and turn off and blind EGR. There is a slight improvement with power, no longer tugging, but the mechanics said that while driving, it occasionally crashes the turbo overload error. I wonder now, is it more likely that the blades are cutting and the turbo blows too much, does the solenoid valve control it badly?
  • #10
    rkriss
    Level 11  
    Hello all.
    I have a similar problem with my C5 (2004r FL, RHR) with the same engine. Lack of power, jerking the car after equalizing the driving, during acceleration does not tug, but after a long time crashes "depollution system faulty". After several starts, the error disappears. The elements that I have already mentioned are the air intake throttle (frayed teeth when regulating the vacuum), or replaced the EGR (however mine was mentioned two years ago - it was not very dirty), vacuum control valves for a total of 3 pieces. Turbo copy sensor, boost pressure sensor. With the post kol. KotBury2, I conclude that my problem is point. 6 and 7 exactly the flow meter (which I also exchanged, but I'm not sure if it was working).
    In accordance with the recommendation of Col. KotBury2 (KotBury, Lu¶nia, dog of a great guide!) I closed EGR by instructions - the car has regained its power, the engine does not tug, I unscrew the flow meter - it does not tug and drives normally.
    According to Lexia, the error codes are P2563, P0238, P1598. According to the table, the atmospheric pressure value of 1000 hPa is the emergency value, also the air temperature in the flow meter -49 deg. C is at least strange at this time of year, and these are in the description of faults.
    I put in a couple of videos from the lexia and, if possible, please interpret the indications.

    Ukł. dolot... test1.avi Download (993 kB) Ukł. dolot... test2.avi Download (1.09 MB) Po sygnale..ędu.avi Download (1.51 MB) błędy.avi Download (1.71 MB) Test F..avi Download (1.21 MB) Elektry...avi Download (199 kB)
  • #11
    tzok
    Moderator of Cars
    KotBury2 wrote:
    Graphic can not be compared with each other, whether they are good or not, because their waveforms are not parallel, literally applied to each other.
    If they are not as they are and you can see from them that the turbo "gets up late", which could not be seen from the tables. The pressure jumps were a bit weird at the beginning - the set pressure happened and the measured one jumped. It is a pity that there is no EGR control chart.

    As for the rest of the points - total agreement.
  • #12
    zako
    Level 10  
    Does anyone know in what conditions opens or closes the egr pneumatic cylinder (No. 2 on one of the diagrams above) and what does it really serve? For me, somehow I did not observe the operation of this actuator (motor 2.0 hdi 150HP), on slow and during gassing at a standstill there is also no negative pressure on the hose reaching the pear.

    On the cold engine, a negative pressure is applied to the pneumatic cylinder bulb and the valve remains closed until the temperature reaches about 65 degrees. Later, the negative pressure is not applied and the valve opens. It looks like an additional throttle valve egr.