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Diagnostic trouble code 0021

  • 18-02-2012 1:32pm
    #1
    freestyla
    Registered Users, Registered Users 2 Posts: 1,047 ✭✭✭


    Hi people, misfire and idle jumping is back to my daily headache..

    Any experience what is causing code 0021: Primary Ignition Signal Circuit Malfunction? Skyline R34 RB25DE NEO



    It's doing this for first half an hour of driving- toggling between misfire and idle jumping -then it usually goes back to normal.
    3 strange things here:
    - Misfire is on for 15min at some point of first half an hour of driving. When misfire is on, is clearly not firing one cylinder- running on 5 only hence power loss
    - Idle jumping is active only occasionally but could occur any time while driving
    - Idle gets to 1900RPM when a gear is selected (on that last year video this is lower at 1600RPM)- acts like a "launch control" -and I don't think it's a feature from factory :P

    Last year had same issues and then changed this stuff>
    • lambda sensor
    • coil packs and wires
    • CAS sensor
    • throttle body rear gasket
    • one vacuum hose
    • oil and filters

    ..so not sure which part solved the problem last time :/ since every part change brought some little improvement (except CAS sensor no effect).

    I think either coil packs or throttle body gasket since changed them at the same time after which problem was totally gone.

    but apparently the gasket shouldn't do these kind of symptoms but rather loss of power which I don't have unless the engine is running on 5 cyl.

    Now.. so hard to believe it's coil packs again.. these are Rising Sun Performance ones
    Any thoughts or some RB engine specialist recommendation is highly appreciated!


Comments

  • #2
    Nissan doctor
    Closed Accounts Posts: 8,223 ✭✭✭Nissan doctor


    Did you change the CAS with a new one or second hand?

    0021 is normally triggered by a faulty CAS on an RB.


  • #3
    freestyla
    Registered Users, Registered Users 2 Posts: 1,047 ✭✭✭freestyla


    Nissan doctor wrote: »
    Did you change the CAS with a new one or second hand?

    0021 is normally triggered by a faulty CAS on an RB.

    It was second hand CAS yes - i will look for new one then.

    Doc, do you recognize this green part here on the photo? What is called?

    UrbanPerformance advised me to change that because it has something to do with engine oil - like it's not working properly until engine is achieved normal working temperature..


    full


  • #4
    Plug
    Registered Users, Registered Users 2 Posts: 9,248 ✭✭✭Plug


    Thats your oil pressure switch or sensor. Do you have an oil pressure gauge in the car?


  • #5
    freestyla
    Registered Users, Registered Users 2 Posts: 1,047 ✭✭✭freestyla


    Plug wrote: »
    Thats your oil pressure switch or sensor. Do you have an oil pressure gauge in the car?

    Yep i have oil pressure gauge. It seems to work all the time.


  • #6
    Nissan doctor
    Closed Accounts Posts: 8,223 ✭✭✭Nissan doctor


    That's the variable valve timing solenoid. Did they say what the issue with it was?


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  • #7
    Plug
    Registered Users, Registered Users 2 Posts: 9,248 ✭✭✭Plug


    Nissan doctor wrote: »
    That's the variable valve timing solenoid. Did they say what the issue with it was?
    They don't call you Nissan doctor for nothing:o


  • #8
    Gary ITR
    Closed Accounts Posts: 16,801 ✭✭✭✭Gary ITR


    Nissan doctor wrote: »
    That's the variable valve timing solenoid. Did they say what the issue with it was?

    I remember the car being in with us alright and I remember there being an issue but I can't remember what it was, I was busy playing with my Honda. I've sent the lad who looked at it a msg on bookface to see if he can recall


  • #9
    Gary ITR
    Closed Accounts Posts: 16,801 ✭✭✭✭Gary ITR


    Gary ITR wrote: »
    I remember the car being in with us alright and I remember there being an issue but I can't remember what it was, I was busy playing with my Honda. I've sent the lad who looked at it a msg on bookface to see if he can recall

    He can't recall. IIRC it was around October when it was with us


  • #10
    freestyla
    Registered Users, Registered Users 2 Posts: 1,047 ✭✭✭freestyla


    Nissan doctor wrote: »
    That's the variable valve timing solenoid. Did they say what the issue with it was?

    Yea they said if maybe stuck with dirt, or sensor inside is not good.. until it reaches normal working temp.. that's why no misfire when warm engine.

    Ok so it's not "oil thingy" but VVT solenoid.. anyways sounds like something that could cause misfire, right?
    Gary ITR wrote: »
    I remember the car being in with us alright and I remember there being an issue but I can't remember what it was, I was busy playing with my Honda. I've sent the lad who looked at it a msg on bookface to see if he can recall

    It was around christmas when visited you, and the problem is still on since then. Told that fella i'm gonna order few parts then would visit you again.. slow progress from my side (and guys in UK).


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