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Thread: Td5 Running Rough

  1. 1st September 2010, 06:57 AM #1
    Franz's Avatar
    Franz
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    Td5 Running Rough

    G'Day All,

    The Td5 started to run very rough this afternoon.

    Nanocom throws up the following codes:
    27-05 - Injector 5 Peak Charge Long
    31-05 - Injector 5 Open circuit

    Cleared the faults and restarted - still running rough and 31-05 comes up again.

    Anyone know what these codes relate to and what the cause could be. I'm thinking possibly oil in the loom and I have a spare loom that I can fit.

    I also get a squeal under acceleration - guessing either idler pulley or leaking exhaust manifold gasket?

    Any comments appreciated.

    Cheers,

    Franz
    2004 Td5 Classic Town Pack with mods
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  2. 1st September 2010, 07:29 AM #2
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    stevo
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    Check the injector out with a multimeter as well compare the readings with the others.

    It is saying that there is no power going to or through that injector.
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  3. 1st September 2010, 07:55 AM #3
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    Quote Originally Posted by stevo View Post
    Check the injector out with a multimeter as well compare the readings with the others.

    It is saying that there is no power going to or through that injector.
    Thanks Stevo.

    So I guess that I need to pull the rocker cover off and check the voltage to each injector or is there another way? Does the ignition need to be on?

    Cheers,

    Franz
    2004 Td5 Classic Town Pack with mods
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  4. 1st September 2010, 08:01 AM #4
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    Quote Originally Posted by Franz View Post
    I also get a squeal under acceleration - guessing either idler pulley or leaking exhaust manifold gasket?

    Leaking exhaust gasket sounds remakably like serious belt slipping, so you're probably on the money with that diagnosis.
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  5. 3rd September 2010, 01:09 PM #5
    Pierre
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    My bet is "oil in injector harness" short, especially if the miss comes back immediately after clearing fault. Check the intercooler hoses and clamps before you start taking the engine apart for gasket replacements. Often these hoses leak/squeal if clamp tension has dropped. Injector harness is easily available and hose clamps are cheap.

    HTH

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  6. 3rd September 2010, 01:53 PM #6
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    Quote Originally Posted by Pierre View Post
    My bet is "oil in injector harness" short, especially if the miss comes back immediately after clearing fault. Check the intercooler hoses and clamps before you start taking the engine apart for gasket replacements. Often these hoses leak/squeal if clamp tension has dropped. Injector harness is easily available and hose clamps are cheap.

    HTH

    Pete
    Thanks Pete, I'll check the hoses.

    I replaced the short loom with a new one and it runs fine again - just need to isolate that squeal now - will start with an intercooler hose check.

    Cheers,

    Franz
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  7. 3rd September 2010, 04:14 PM #7
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    Quote Originally Posted by Franz View Post
    Thanks Pete, I'll check the hoses.

    I replaced the short loom with a new one and it runs fine again - just need to isolate that squeal now - will start with an intercooler hose check.

    Cheers,

    Franz
    Mine did this, tracked it down to a siezed bearing in the idler pulley.....
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