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Thread: Possible gearbox or transfer problem need help diagnose it

  1. #1
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    Possible gearbox or transfer problem need help diagnose it

    Need some help as new to the L320 have and still own older per computerized models here goes I pick up the car as a replacement for my just written off disco 1. It had the standard special features not available and wouldn't go into low range as I thought and research could be because the old owners had never used it which they hadn't I was going to look at and in to it this weekend. Famous last words.... The car drove and change gears like a dream up shifting and down shifting like a dream auto transmission should the car has 268630km on it, the transmission was rebuilt at 235223 and had a stand alone cooler fitted done by one of the better transmission shops in Townsville they did fit the upgraded trans pan and filter but I have already ordered it. The car has not been used for heavy towing.
    While I was driving it home from work on Friday towing a empty horse float the gearbox showed no hesitation at all, the car went in to gearbox fault mode I pulled over turned the car off and back on again the car wouldn't move in drive or reverse but the f symbol on the dash was gone. I disconnected the battery while waiting for the tow truck half hour later reconnected it and still no drive but the hi and low range and terrain features now work which the didn't before . As I disconnected the pos side of the battery this set off a heap of codes on reconnection.

    Today I finally had time to hook up the IIDtool and recorded the mass off codes the ones I can recreate are
    U040368(08) in the vehicle dynamic
    U0155-87(6D) in the transmission
    P183A-00(28) and P2711-00(28) in the transfer
    And last but not least a
    P080600(2F) but only once got this code
    I have recalibrate the transfer hand brake ECT with the IIDtool and I still have no drive it almost feel like an wound up transfer case. It feel like it wants to drive but feels bound and won't move forward or reverse but will in neutral lurch forward a little bit no drive it never had any slippage or vibrations and behaved like to two year old gearbox should. I should also say the car has been regularly serviced by the land rover specialist mechanic in Townsville

    If any one can point me in the right direction to working this out or helping to diagnosis the problem thanks in advance

    Kynan

  2. #2
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    Possible gearbox or transfer problem need help diagnose it

    If I've missed you might think will help in the diagnosis just ask and I will do my best to get the information so I can get it worked out and fixed
    Kynan

  3. #3
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    Possible causes are a broken CV joint, broken front or rear diff, broken drive between the gearbox and the transfer case or the transfer case is stuck between high and low range.

    Engage rock crawl with the steering straight ahead and try to move off. If there is no drive to the transfer case or the transfer case is in neutral then the vehicle wont move but if it moves then its either a broken CV joint or diff.
    MY12 RRV 4.4 TDV8 AB, +LLAMS, +e-diff, +ACC stop/go. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
    VK2HFG and APRS W1 digi

  4. #4
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    Quote Originally Posted by Graeme View Post
    Possible causes are a broken CV joint, broken front or rear diff, broken drive between the gearbox and the transfer case or the transfer case is stuck between high and low range.

    Engage rock crawl with the steering straight ahead and try to move off. If there is no drive to the transfer case or the transfer case is in neutral then the vehicle wont move but if it moves then its either a broken CV joint or diff.
    Thanks for that Graeme
    Having worked on and shattered a few diffs and cv over the years i have found that there is normally a bit of movement and noise when trying to move the car their is none and was non when the gear box went into F mode but I will look as I have been caught out over the years at work and have been made to look like a twit when I have gotten another mechanic to help me diagnosis something.
    As for the transfer being in neutral is engine behaves like it is driving under load but no movement I had already had it in low and on rock crawl as you asked but got the same result the engine loads up but no movement I will try and manually move the transfer to high and low but the actuator is coming up as working normally now but wasn't working before this happened and I think that then only way to check if it's the output shaft is to remove the transfer from the transmission. I will try and drop the transfer oil out today to see if it sheds some light on wear to look. The thing that I find complexing is once it F coded I was able to drive it at reduced speed for about 800m till I could safely pull over and it didn't make any abnormal noises at any stage

  5. #5
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    The gbox o/p shaft to tcase input doesn't receive lubrication, just fitted with specific grease during assembly. If the grease has dried then the splines fret eventually slipping. Unfortunately a new gbox o/p shaft and tcase input shaft (or another tcase) are required.
    MY12 RRV 4.4 TDV8 AB, +LLAMS, +e-diff, +ACC stop/go. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
    VK2HFG and APRS W1 digi

  6. #6
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    I will be keeping an eye out for that considering that the gearbox was only rebuilt two years ago it make me think if it was greased up when it was rebuilt. Will have to look at the receipt from the people that did the work.

  7. #7
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    Hi Landy,
    I agree with what the others are saying and with your approach.
    The only other suggestion I would make, is that check your battery is 100% before you do anything else.
    My experience with batteries is that they can fail without notice and in many different ways. It might test OK with no load but drop it's bundle when loaded. Internal shorts can even take out one cell intermittently. etc etc.
    A dodgy battery can give you all sort of codes and put your truck into all sorts of modes, so at least eliminate this possibility.
    Good luck and cheers mate.

  8. #8
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    Quote Originally Posted by Keijo View Post
    Hi Landy,
    I agree with what the others are saying and with your approach.
    The only other suggestion I would make, is that check your battery is 100% before you do anything else.
    My experience with batteries is that they can fail without notice and in many different ways. It might test OK with no load but drop it's bundle when loaded. Internal shorts can even take out one cell intermittently. etc etc.
    A dodgy battery can give you all sort of codes and put your truck into all sorts of modes, so at least eliminate this possibility.
    Good luck and cheers mate.

    Thanks for that I will take it in to work and test it. The battery is almost two years old and with the heat up here it is quite common for them to only last about that time frame. It's still cranking it over fine so it will be interesting to see what it load tests.
    Last edited by Landy74; 1st June 2020 at 06:43 PM. Reason: Spelling

  9. #9
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    Hi all I took the battery into work this morning was on the boarder off needing to be replaced grabbed a new one. Ducked home at lunch put it the car and no change. It still wants to move in drive and neutral only but not it the gears its meant too. looks like I will be pulling the gearbox out for the next few nights....

    Just a thought will the gearbox behave like that if it is a bit low on oil as that one thing I haven't checked yet

  10. #10
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    Quote Originally Posted by Landy74 View Post
    Hi all I took the battery into work this morning was on the boarder off needing to be replaced grabbed a new one. Ducked home at lunch put it the car and no change. It still wants to move in drive and neutral only but not it the gears its meant too. looks like I will be pulling the gearbox out for the next few nights....

    Just a thought will the gearbox behave like that if it is a bit low on oil as that one thing I haven't checked yet
    Yes, fluid level would be one of my first checks.
    MY08 TDV6 SE D3- permagrin ooh yeah
    2004 Jayco Freedom tin tent
    1998 Triumph Daytona T595
    1974 VW Kombi bus
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