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BMW E90 N46B20 Low-Speed Shaking: Timing Gear on Asta Locks & Eccentric Shaft Sensor Impact

marcin910w 13029 8
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
  • #1 16192198
    marcin910w
    Level 10  
    Welcome.
    The car is E90 2.0 with LPG N46B20. BMW shakes the car at low speed and with a sudden addition of gas is a kind of a "choking", although not always.
    I was installing a new timing gear on Asta locks (PLN 200) and unfortunately the rollers did not sit stiffly in the locks, they could be moved gently from side to side and here comes my question, whether the camshafts adaption tab in INPIE may indicate that the rollers are slightly moved? The first value is in the red field (indicates 53.5 and green starts from 58) the second is ok.
    There are new candles in the car. No engine-related errors on the computer (sometimes it shows an occasional error: misfiring on the 2nd cylinder)
    Has anyone done timing here on such blockades?

    The second thing: after disconnecting the eccentric shaft sensor, the car works a little better at idle. In the engine roughness tab with the sensor plugged in, the values are more dispersed, and when unplugged they oscillate around 0 + -1. I noticed that if the value (mainly the 2nd cylinder) goes more to the plus, above 4 cars it starts to telep.

    I am asking for your advice
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  • #2 16192584
    grzegorz0105
    Level 12  
    Was everything good before the timing replacement and did these symptoms occur immediately after the timing replacement?
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  • #3 16197519
    marcin910w
    Level 10  
    I don't know how it was before because I bought the car with a damaged timing gear.
  • #4 16197605
    jenusz11
    Level 20  
    equal pressure on the cylinders? he should walk well on these blocks, but maybe that's not the rule
  • #5 16238521
    marcin910w
    Level 10  
    I didn't have time before but yesterday I checked the pressure and it came out practically equal, from 14.5 to 15 bar.
    A car with an unhooked eccentric shaft sensor drives in the same way as when connected, only when going down from revolutions it can wave.
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  • #6 16286524
    marcin910w
    Level 10  
    Currently in BMW after starting on a cold engine, the check engine indicator flashes. Errors that show is 29CC 29CE or something with ignition loss. New candles. I bought 2 coils per substitution but no change. Where else can I look for the reason? I will add that the indicator flashes only on cold.
  • #7 16286811
    bula17
    Level 22  
    Compression pressure measured on cold ?? It remains to change the injection places and see what cylinder it falls out.
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  • #8 16286836
    Don de Leon
    Level 24  
    I had a similar case in the N45, I folded the cylinder head and timing on the locks, I start and the ignition falls out on all cylinders. Adaptation of Vanos sucking something around 6000 degrees ???!, I swapped the roller sensors in places (even though the same) and passed ???! But here is more a problem with the eccentric shaft.
  • #9 16311429
    marcin910w
    Level 10  
    I have not yet checked the pressure on a cold engine (after a night).
    I swapped the roller sensors and then the same. But after unhooking one of the camshaft sensors, the idle speed improves just like after unhooking the eccentric shaft sensor. With the camshaft or eccentric sensor detached, there is no cold ignition and the engine runs evenly.
    Bmw with unplugged probes works the same, i.e. shakes it.
    Where to look for the reason, if it works better without sensors? Vanosas sit down? Earlier, I switched vanos solenoid valves and nothing changed.

Topic summary

The discussion revolves around a BMW E90 2.0 with an N46B20 engine experiencing low-speed shaking and performance issues, particularly when accelerating. The user recently replaced the timing gear on Asta locks but noted that the rollers were not securely fitted, leading to concerns about camshaft adaptation values in INPIE, which indicated a red flag at 53.5. The user reported equal cylinder pressure readings (14.5 to 15 bar) and mentioned that disconnecting the eccentric shaft sensor improved idle performance, suggesting potential issues with the sensor or the Vanos system. Additional symptoms included a flashing check engine light on cold starts, with error codes related to ignition loss. The user has replaced spark plugs and coils without resolving the issue and is exploring further diagnostics, including checking cold engine pressure and swapping sensor positions.
Summary generated by the language model.
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