Monster MotorsportAH Fabrications
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  1. #1
    Westy's Avatar
    Double Dark Side! Diesel & 8P

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    VCDS injector fault.

    I know there's probably not a good time for any fault but a week an a half before Inters definitely isn't a good time!

    Anyway, has anyone had this fault before?:



    Ross-Tech says:

    17648/P1240 - Fuel Injector for Cylinder 4 (N33): Open Circuit

    Possible Symptoms
    MIL On
    Poor engine performance
    Possible Causes
    Fuse for injector
    Wiring harness issue
    Failed injector
    Failed ECM
    Possible Solutions
    Inspect fuse for injector
    Inspect wiring to and from injector, see repair manual
    Ohm test injector, replace if needed, see repair manual


    I'm running 1 year old Bosch 550cc injectors so I don't think the injector I the issue. I've swapped it over with cylinder 1 to see if the fault follows.

    I'm guessing wiring. I assume the injector wiring will break down in the same way as the coil pack wiring over time?

    If anyone has seen this before can you give me some advice? Thanks.
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  3. #2
    Westy's Avatar
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    Now I'm fooked! Blue seal that sits in the fuel rail just dropped into the engine bay

    I've got the inlet mani off but I can't see it. Are these standard seals or do I need to order from Bosch?
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  4. #3
    6th Gear

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    steal them off another engine sat somewhere in the garage... :D
    '02 TDi 130 Sport: Mods to date: BXP 160 conversion, EGR delete, Decat, Helix SMF fast road clutch, 312mm front rotors, full DIS , CC, Xenons.
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  5. #4
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    The rubber o-ring on the injector??

    Theyre pretty generic to bosch injectors. Ebay that shizzle

  6. #5
    s3dave's Avatar
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    Drama queen!...

  7. #6
    Westy's Avatar
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    Found it nestling next to the coolant bottle! Anyway all back together now. Stated it up and no codes yet. I'll check again tomorrow after its done a journey.
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  8. #7
    superkarl's Avatar
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    Hard to imagine injector wirimg to get damaged, doesnt see the heat the coilpack loom does. Perhaps just a weak connection?

    If you have a multimeter perhaps worth checking resistance across the pins to see if anything is odd.

  9. #8
    Westy's Avatar
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    Quote Originally Posted by superkarl View Post
    Hard to imagine injector wirimg to get damaged, doesnt see the heat the coilpack loom does. Perhaps just a weak connection?

    If you have a multimeter perhaps worth checking resistance across the pins to see if anything is odd.
    It's funny you should say this. I prodded and wiggled all the wiring while it was on and there was no issue. I did spot when I swapped the injectors that the connectors inside the adapter plug is well loose and flimsy so could be that. With a bit of luck it's now sorted...
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  10. #9
    Westy's Avatar
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    No error today. I'll keep an eye on it.
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