Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Please note that it is not permitted to have referral links posted in your signature. Keep these links contained in the appropriate forum. Thank you.

https://www.boards.ie/discussion/2055940817/signature-rules
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

Primastar engine cuts out

  • 10-10-2017 4:36pm
    #1
    lissydaly
    Registered Users, Registered Users 2 Posts: 11 ✭


    Anyone had a 2011 Primastar engine cutting out when accelerating eg overtaking. The local Nissan garages are stumped. Various sensors have been replaced and pumps and injectors been tested ok.


Comments

  • #2
    Waterson
    Registered Users, Registered Users 2 Posts: 383 ✭✭Waterson


    When you say "cutting out" do you mean that the engine stalls, i.e stops running or that the engine management puts it into a reduced power limp home mode? Have the technicians pulled any fault codes, perhaps low fuel pressure or EGR related faults?


  • #3
    fancy pigeon
    Registered Users, Registered Users 2 Posts: 4,866 ✭✭✭fancy pigeon


    Have the injectors been tested under full load? Checked the pressure regulator on the rail?

    This happened with my CDI, wonkey injectors that worked fine untill testing under full load revealed otherwise. The regulator was bulged out, an unusual failure

    That is if you can get them out to test...! :eek:


  • #4
    lissydaly
    Registered Users, Registered Users 2 Posts: 11 ✭lissydaly


    Yes, the engine stops running and all the dash lights up. When I key it immediately in motion there is a lack of power before the engine picks up. If I coast to a stop, turn off the key then on again, it starts as if nothing had gone wrong. No fault codes are logged and tests on fuel pressure and sensors are normal. In normal operation the engine is fine, as long as I build up speed gradually for overtaking and don't kick the pedal down.


  • #5
    fancy pigeon
    Registered Users, Registered Users 2 Posts: 4,866 ✭✭✭fancy pigeon


    lissydaly wrote: »
    Yes, the engine stops running and all the dash lights up. When I key it immediately in motion there is a lack of power before the engine picks up. If I coast to a stop, turn off the key then on again, it starts as if nothing had gone wrong. No fault codes are logged and tests on fuel pressure and sensors are normal. In normal operation the engine is fine, as long as I build up speed gradually for overtaking and don't kick the pedal down.

    Sounds exactly the same as me so.

    Follow the above advise, I spent a lot of time scratching my head too!


  • #6
    Waterson
    Registered Users, Registered Users 2 Posts: 383 ✭✭Waterson


    Little to go on in terms of a direction. Given the symptoms we can probably rule out a mechanical fault, compression and engine timing leaving you with either an electrical anomoly on a circuit that is a key sensor input to ECU (most of which are monitored by ECU as part of its self diagnostic strategy, and log fault codes when failing) or fuel starvation. I would ask your mechanic to road test the car whilst logging high pressure fuel data and try to simulate the problem. A drop out in pressure at the fuel rail will give them a direction to proceed with the diagnosis...


  • Advertisement
  • #7
    Autochange
    Banned (with Prison Access) Posts: 1,648 ✭✭✭Autochange


    Waterson wrote: »
    When you say "cutting out" do you mean that the engine stalls, i.e stops running or that the engine management puts it into a reduced power limp home mode? Have the technicians pulled any fault codes, perhaps low fuel pressure or EGR related faults?

    EGR faults?


  • #8
    Waterson
    Registered Users, Registered Users 2 Posts: 383 ✭✭Waterson


    Exhaust gas regulation. Given the symptoms I would doubt the OPs problem is EGR related.


  • #9
    lissydaly
    Registered Users, Registered Users 2 Posts: 11 ✭lissydaly


    Thanx for all comments so far. I put it into a nissan garage and they think it's something wrong with the common rail or injectors, which seems a bit vague. They intend updating their ideas on monday or tuesday. I think it's a suck it and see job! Will keep you all updated.


  • #10
    Autochange
    Banned (with Prison Access) Posts: 1,648 ✭✭✭Autochange


    lissydaly wrote: »
    Thanx for all comments so far. I put it into a nissan garage and they think it's something wrong with the common rail or injectors, which seems a bit vague. They intend updating their ideas on monday or tuesday. I think it's a suck it and see job! Will keep you all updated.

    If its not giving fault codes and they cant replicate the fault then call it an educated guess. It happens


  • #11
    cournioni
    Moderators, Regional North East Moderators Posts: 12,739 Mod ✭✭✭✭cournioni


    lissydaly wrote: »
    Thanx for all comments so far. I put it into a nissan garage and they think it's something wrong with the common rail or injectors, which seems a bit vague. They intend updating their ideas on monday or tuesday. I think it's a suck it and see job! Will keep you all updated.
    You’re probably getting a fuel pressure fault which can relate to anything on the fuel system. Injectors and pump can be tested fully on test bench in a repair specialist, the rail can only be checked whilst on the vehicle which is fairly hit and miss at times.

    Also just to let you know, some Primastar 2011 injectors can be a disaster to remove.


  • Advertisement
Advertisement