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Thread: Suspect it's slow...

  1. 13th June 2018, 09:15 AM #11
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    laney
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    Just a thought you haven't got a flat spot on the turbo.
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  2. 13th June 2018, 09:26 AM #12
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    Quote Originally Posted by thetravellingleunig View Post
    Any suggestions as to where to next?
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  3. 13th June 2018, 09:49 AM #13
    DiscoMick Guest
    Is 13.1 l/100 kms high for a Td5?
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  4. 13th June 2018, 12:18 PM #14
    thetravellingleunig
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    Thanks for the input guys.
    I'll have a look at the hoses.

    My D2 is stock.
    Not bars, no roof racks, small AT tyres, no engine mods (as far as I am aware/can see), etc.
    In that context I think the fuel usage is too high. I don't necessarily expect to get the best results (some reporting 10L/100km, or less), but seems like it could be better.
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  5. 13th June 2018, 02:13 PM #15
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    Suspect it's slow...

    Quote Originally Posted by DiscoMick View Post
    Is 13.1 l/100 kms high for a Td5?
    It’s getting up there.... i’ve averaged 11.4l/100 over the last 39 consecutive fuel fills. Lowest was 10.9 highest was 12.1. And before I put the roofbars on I was averaging 10.1 ....
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  6. 13th June 2018, 02:14 PM #16
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    Quote Originally Posted by DiscoMick View Post
    Is 13.1 l/100 kms high for a Td5?
    Around town (City), on the highway or average?

    I get 11.5 to 12's on the highway at a good clip, 13's is hills & gravel off/on the throttle type stuff for mine & I haven't got a clue in cities.

    Jonesfam
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  7. 13th June 2018, 04:57 PM #17
    Tombie Guest
    Quote Originally Posted by DiscoMick View Post
    Is 13.1 l/100 kms high for a Td5?
    Very much so!
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  8. 14th June 2018, 10:46 PM #18
    thetravellingleunig
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    Quote Originally Posted by Tombie View Post
    No change with MAF disconnected and lethargic tends to indicate a few potentials.

    I’d like to see it on a diagnostic (Nanocom etc) for some MAF readings.

    Also, some free and easy checks:
    Bypass WGM direct to turbo
    Check Wastegate can actuate freely.

    Update: wastegate seemed to move freely, so tried the bypass. This seems to have made a difference. Of course the misfire/flat spot is still there around 2200-2300rpm, but otherwise it seems to be turning over with a lot less throttle input. Was only a short drive, but I am feeling optimistic.

    So next question is - can I continue to run it like this or should I replace the modulator?

    (The other next question is regarding the misfire, but I am thinking that would require some more complex Dx...)
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  9. 15th June 2018, 05:43 AM #19
    whitey56
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    165,000ks since new, possibly a soccer mum or elderly previous owner and might need a good flogging for a blowout.
    Do a stall test to see how the tranny is going.
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  10. 15th June 2018, 08:57 AM #20
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    Quote Originally Posted by thetravellingleunig View Post
    So next question is - can I continue to run it like this or should I replace the modulator?
    The modulator diverts exhaust around the turbo to limit the boost pressure. Sounds like yours was always diverting at least something.
    If the boost gets too high, the motor will go into a "limp" mode where you lose quite a bit of power. Quite unnerving when your overtaking.
    I'd be replacing the modulator and trying to get it right, it's not that difficult to do your self.

    Cheers Glen
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