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Thread: TD5 Starting issues......posting after going through other threads

  1. #1
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    TD5 Starting issues......posting after going through other threads

    G'Day all,

    Been using the other "searched" threads as a guide to check all the common issues....but running low on next steps.

    At first, the car (2005 110 TD5) would start but run very rough as the fuel pump kept cutting out; I could hear the clicking of the relay(s) over and over coinciding with the cut-out of the fuel pump.
    Then gradually it became harder and harder to get the car started:
    - No glow plug light
    - No engine light
    - no fuel pump running
    - just engine turning over

    What I have done/ measuerd:
    - Battery 12.6V/ 12.2V under load
    - Measured V from battery through relays: 11.8V at all points (beginning of fuse feed> all fuses> 30 (main) & 85 (signal in) of relays)
    - Tested each relay indivdually- all working
    - Cleaned Earths to shiny metal (underseat box x 2, transfer case, gear box + chassis, chassis + foot well)
    - Bypassed (hardwired) Fuel cutoff inertia switch to remove from equation
    - Hardwired Main and Fuel Pump relays. Can hear fuel pump running and engine turns over but no start
    - removed battery cables overnight to let ECU bleed off power and reset
    - Diagnostic tool: plenty of codes (main relay over temp, fuel pump relay over temp, fan relay over temp)
    - Live Diagnostic Data: can watch rpm's on live data= assume that means crank position sensor is good
    - Immobilizer light (red on speedo) is off when I try to start the car

    I have an appt with mechanic on Wednesday, so if I can just get it started again..... I should be able to get it to the mechanic.

    ANY HELP WOULD BE APPRECIATED!!!

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    Have you checked all Earth points from battery to chassis etc?
    Remove the ECU plugs and check for oil.
    Check the wire to the Crank Angle Sensor, it can chafe and earth out.

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    Thanks Tombie,

    Yes, I forgot to mention, I did check for oil in the loom and ECU plugs. Clean/ no oil in any of the plugs.

    I hadn't measured the underbody earths since cleaning, but the seatbox (driver) is great.... I will go measure them.

    Good idea, I will check the crank sensor wire.

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    I think the ecu fires all the things you mentioned,
    If you could "test" another that would likely help narrow things down.

    You may well get some of those fault codes if you have bypassed the circuitry so that data is possibly corrupted until factory circuits are reinstated.

    The big earth issue in a defender is often the main earth strap that goes from the battery straight out the battery box then too the chassis and on to the back of a bolt on the bellhousing.

    All the ones I've checked - that have had earthing issues have got problems with the "inline" crimped on fitting that goes to the chassis.

    They all look ok, but on closer inspection the solder has melted/deteriorated and the fitting is loose on the cable, I would definitely give this some attention, and it only takes 15 minutes to remove the whole thing and get it on the workbench.

    Check that first, then move onto the ecu.

    Remember that if you pump the accelerator peddle 7 times I think,with the ignition on, the fuel pump will go into a fuel bleed mode and the engine light will flash as it cycles - you will be about to hear it running for a minute or so on and off, try that and see what happens.

    Cheers
    James

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    Thanks James, I unfortunately think you are right regarding the ECU. I don't have a spare, so I may be unable to get her started even to drive it to the mechanic.

    Regarding the earth, that is one of them that I disassembled, cleaned. All the earths now read 0 ohms.

    Thanks for the reminder about fuel pump. I will go try that right now.

  6. #6
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    Quote Originally Posted by Tombie View Post
    Have you checked all Earth points from battery to chassis etc?
    Remove the ECU plugs and check for oil.
    Check the wire to the Crank Angle Sensor, it can chafe and earth out.

    Tombie, no luck....Crank angle sensor wiring was solid, at least from what I could tell from the limited access I could get to it! I disconnected and was able to examine the last 3-4 cms of the plug.

    Thanks

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    Anyone know a way, just to get it started for on last drive to the mechanic

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    this is the last ditch effort and usually points to it cranking too slow but......

    with the fuel pump in bypass on the relay crack the FPR and make sure its getting clean fuel. I've seen cases where the pump is spinning and making noise but not shifting fuel. if youve got a cro piggy back onto the back of one of the injectors and make sure its getting signal to fire when cranking. (have you checked the intertia switch and security system?)

    if youre getting all of that I've had 2 experiences where for some reason the vehicle simply would not fire until the engine was turning over at a higher speed than the starter could crank it. A spritz of areo for the autos or a pull start for the manuals would always get it running.

    Nope, never figured out the cause of it although my personal guess was that it was somehow related to the startermotor or the solenoid. Both vehicles sorted themselves out, one after it had the gearbox changed out and the other after the fuel filter was changed.
    Dave

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    Two questions:
    - have you cleared all the codes and did they come back?
    - have you checked the relays near the ECU for signs of overheating or bad contact? I had similar issues with the engine running erratically and loss of power, but it was nowhere near as bad as what you describe. However, a friend of mine had no-starting issues due to the same problem. The realys near the ECU can get really hot to a point where they melt, or the relay socket melts.nI had to re wire them completely.

    BTW, where are you located?

  10. #10
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    The fuel pump has 2 pumps, one high pressure one low pressure.
    Maybe you are hearing the low pressure pump and the high pressure pump has died.
    Do you have another fuel pump to try?

    Regards PhilipA

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