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Error P0170 - Z18XE - Error P0170 in the Z18XE engine. Appears and disappears.

Dhaeraow 21891 16
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  • #1
    Dhaeraow
    Level 12  
    Hey. I have a problem. Namely, in my Astra, the error P0170 appears and disappears. I've read that it's a poor mix. A familiar mechanic said that the first lambda to exchange because it reacts badly. After its replacement, nothing has changed. After buying the car I was searching a bit from what it could be. And so I checked the value from the flow meter is about 2.7g / s on idle, so it's OK. Lambdy, when they get hot, oscillate first the more violently the other calmer. At some point, I gave up the error and I noticed that he was leaving. The engine works nicely, evenly and accelerates well. I recently added a gas installation, but this has not affected this problem.
    Where to look for causes? Maybe the electrician does not touch somewhere?
  • #2
    Bieda z nędzą
    Level 35  
    Dhaeraow wrote:
    And so I checked the value from the flow meter is about 2.7g / s on idle, so it's OK.

    How do you know that this is correct? Where did you read this?
  • #3
    Dhaeraow
    Level 12  
    By browsing other forums / posts regarding the same error of other users. They gave this value (or its reckoner per kg / h - I do not want to specifically look for it now), writing that it is in TIS for idling.
  • #4
    1megan
    Level 13  
    Check for leaks in the intake. maybe he grabs the left wing.
  • #5
    Dhaeraow
    Level 12  
    Finally, I bought a meaningful interface and a few flowers came out. Namely, besides P0170, inactive P0100 (flowmeter signal too low) and P0460 (Fuel level, signal too high) were still hung.
    Any suggestions? In the free moment, I think I will take off the connection between the collector flow and see if there are any cracks.
  • #6
    waski821
    Level 17  
    P0100 may suggest a flowmeter failure which is quite common but may also indicate a failure of the motor controller. This time, it helps to provide a separate mass on the flow meter. But it is suggested to first install another meter and observe the OBD corrections.
  • #7
    Dhaeraow
    Level 12  
    A separate mass - In the sense, to add a new mass to the flow meter? The driver somehow gives it or how?
  • #8
    Dhaeraow
    Level 12  
    Gentlemen, does anyone know what exactly should be the values shown by the flow meter? Some source.
  • #9
    Bieda z nędzą
    Level 35  
    At idle speed, for every 1 liter of engine capacity, the flowmeter should indicate an air mass of 6 kg / h.
  • #10
    Strumien swiadomosci swia
    Level 43  
    And you do not have blind EGR because I suppose it's AG.
    Catalyst not clogged?

    Now with LPG it will be difficult to detect it, I would like it, because if so much I passed it is a pity to spend hundreds of PLN on the diagnosis, it is better to spend on service and gasoline.
  • #11
    Dhaeraow
    Level 12  
    I took over ABtech and I read the following at idling speed:
    800RPM
    Mass Air Flow sensor - voltage is buoy 0.20-0.45V
    Mass Air Flow sensor - 7kg / h
    Intake air temp. - 1.45V
    Intake air temp - 34C

    And it is ~ 8C outside
    It's strange to me

    Reading error of the flowmeter - inactive during reading
    Mixing error - active
  • #12
    Bieda z nędzą
    Level 35  
    Dhaeraow wrote:

    Mass Air Flow sensor - 7kg / h

    The 1.2 engine would be.
  • #13
    Dhaeraow
    Level 12  
    Flow meter listed, same indications as on old: /
  • #14
    stixik
    Level 8  
    Dhaeraow wrote:
    Flowmeter replaced, indications the same as on the old one: /

    did you deal with this problem?
  • #15
    sebap
    Level 41  
    Tamped ECU, standard fault in Opel 1.8.
  • #16
    piotrek222
    Level 17  
    Hello,

    I have astra x18xe with LPG, error P0170 appeared.
    The car runs standardizing. There were only problems on the cold engine that it lacked power. After 2-3 minutes everything was back to normal.
    The car was at the mechanic's, apparently, he checked everything from the lambda to the fuel pressure injectors, the flow meter was replaced because the old one reportedly showed too low flow.
    And he claims that only mechanically, for example, valves can be burnt out. And I want over 3,000 for the repair.
    I don't want to believe it.
  • #17
    Strumien swiadomosci swia
    Level 43  
    piotrek222 wrote:
    The car runs standardizing

    Do nothing, because it will not work, Opel from those years is like that, it lands on the scrap metal when it breaks down.