[SOLVED] P0202 Following Injector cleaning

Discussion in 'Mazdaspeed 3 Troubleshooting' started by Awafrican, Apr 10, 2021.

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  1. L337TurboZ

    L337TurboZ World Class Truck Squatter Greenie Member

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    Can you load test the injector wires? Connect a headlamp bulb into the injector pins and then apply power through the circuit. You can have good continuity with low resistance if one strand of wire is still intact but not enough strands are in place to carry the current.
     
    L337TurboZ, via a mobile device, Apr 11, 2021
    #21
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  2. Awafrican

    Awafrican Moderator Gold Member

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    Yup you're right I'm going to repin the connector to be sure
    I hope these will do the trick




    Don't have a power source to do that with, that's not in the FSM as diagnostic so I'm not going to do that, looking at the Injector pins they weren't even seated in the harness which explains alot! I get what you're saying. I Swapped injector 1+2 waiting for new o-rings will test again
     
    Awafrican, via a mobile device, Apr 11, 2021
    #22
  3. DualSpeed

    DualSpeed Greenie Member

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    Hopefully the right one is in there. Hard to tell by the picture. Once you get that changed out, it should be good.
     
    DualSpeed, via a mobile device, Apr 11, 2021
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  4. Awafrican

    Awafrican Moderator Gold Member

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    That's the hope, at the very least it gets me a pin tool and crimper so I can remove the pin and go to a local shop with it if needed to source a connector of needed.
    Let's hope it doesn't come to that, sent it to my mechanic buddy hr figures I'll be good with that.
     
    Awafrican, via a mobile device, Apr 11, 2021
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  5. DualSpeed

    DualSpeed Greenie Member

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    I had my own wiring jackpot here this afternoon. Picture two old guys one a carpenter the other a mechanic, arguing over how Automotive wiring works.... lol
     
    DualSpeed, via a mobile device, Apr 11, 2021
    #25
  6. L337TurboZ

    L337TurboZ World Class Truck Squatter Greenie Member

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    L337TurboZ, via a mobile device, Apr 11, 2021
    #26
  7. Awafrican

    Awafrican Moderator Gold Member

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    Got a similar one coming.
    Looks like local wrecker has a speed in their yard, going to try snag the Injector harness tomorrow and swap over the connector.
     
    Awafrican, via a mobile device, Apr 11, 2021
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  8. Sleepy_Pat

    Sleepy_Pat Silver Member

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    Lucky find! I never see speeds in the wrecking yard near me. I guess that shouldn’t be something to complain about either though
     
    Sleepy_Pat, via an iPhone, Apr 13, 2021
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  9. Awafrican

    Awafrican Moderator Gold Member

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    well no harness on the speed at the wrecker atleast that my buddy saw.... back to plan a just re pinning the one I have
     
  10. Easter Bunny

    Easter Bunny Professional Engineer Motorhead Platinum Member

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    I feel like you could just use the harness as is since you ha e straightened the pin
     
    Easter Bunny, via a mobile device, Apr 13, 2021
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  11. Awafrican

    Awafrican Moderator Gold Member

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    probably what I'm going to end up doing and at least give it a shot, try straighten it a little more. If I could have gotten the new connector from the donor harness I would have swapped it on.
     
  12. Awafrican

    Awafrican Moderator Gold Member

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    Alright so new seals arrived today, will tackle it tomorrow I should hopefully have the repin tools tomorrow then too.

    I will probably just use the connector as is and straighten it a little more but test it with a donor pin from the kit.

    Since it's cool out (1 to 3 C) and yes I have a garage heater but I only heat to about 12C I'm going to keep the rail and o-rings inside, then bring them out once I'm ready to install hopefully this keep the seals softer and means the metal in the fuel rail will be expanded as well. Mostly concerned about the seals but may aswell bring the rail in too.
     
    Awafrican, via a mobile device, Apr 14, 2021
    #32
  13. L337TurboZ

    L337TurboZ World Class Truck Squatter Greenie Member

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    do you have a link to the injector seals? also try using some dielectric lubricant on the injector stems to help it install smoothly
     
  14. Awafrican

    Awafrican Moderator Gold Member

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    Using the GB reman top seals That have proven good and cheaper than OEM

    https://www.rockauto.com/en/moreinfo.php?pk=10338116&cc=1505571

    And yes I will be using silicone o-ring lube

     
    Awafrican, via a mobile device, Apr 14, 2021
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  15. Awafrican

    Awafrican Moderator Gold Member

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    TLDR; check you injector pins after getting them back from cleaning.

    its ALIVE!!!!! she lives! no codes. pins on injector straightened, also in connector. good connection resistance measured good. I did not end up repining anything or getting a new connector.


    thanks for all the help folks was just a bad connection from injector pin to connector.
     
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  16. The_big_dill

    The_big_dill Greenie Member

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    Those orings look like they took a beating... I recommend you clean the bores of the injector holes on the fuel rail. Those bores do corrode and create a rough surface, specifically if the car is winter driven in Canada.

    In addition, I have a spare injector harness, assuming you live in GTA.
     
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  17. Awafrican

    Awafrican Moderator Gold Member

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    I have smoothed it, hit the lip with a 400 wet sand, nice and smooth, fresh o-rings fuel rail seated nicely.

    PXL_20210416_174327187.jpg

    Thanks for the offer on the harness, I'm not in Ontario although I have family around the GTA.
     

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    Awafrican, via a mobile device, Apr 16, 2021
    #37
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  18. DualSpeed

    DualSpeed Greenie Member

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    Glad you got it fixed!
     
    DualSpeed, via a mobile device, Apr 18, 2021
    #38
  19. chris' speed 3

    chris' speed 3 Greenie Member

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    Im glad you solved your issue!! Im having the exact same issue 3 weeks after getting my injectors back from cleaning. When you say just needed to straight the pins out you mean like just make them parallel to each other?
    Thanks a lot
     
  20. Awafrican

    Awafrican Moderator Gold Member

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    Had to pull the pins upwards as when looking at how the injector would be installed as they were pushed down.

    Pics from previous posts PXL_20210411_195639671.jpg
    Injector #2 the one in question is on the left see how the pins point down more than #3 on the right? #3 almost points up a little
    PXL_20210411_212053013.jpg
    You can see here on the harness how the female side of the connector is on the top side not the bottom and the pins from the injector were trying to push into the button of the connector so straighten the pins put from pointing downwards to match the angle of the other injector pins better and issue fixed for me

    So yes make sure they're even but also angled correctly, hopefully this helps
     
    Awafrican, via a mobile device, Sep 7, 2022
    #40
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