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Thread: Just joined and hoping to diagnose problem

  1. #1
    grayarea Guest

    Just joined and hoping to diagnose problem

    Have been a Landrover Discovery owner for 14 years (2000 Discovery TD5). Have done about 195K and have generally been happy owner. Over last few years it has been mostly garaged only taken out to drag stuff to dump or surfboards carting although did trip from Sunshine Coast to Whitsundays a couple of years ago.

    Not sure on forums where to post about working out problems.

    Discovery has been pressed into more service due to change around of cars etc. We have two intermittent faults the first that has been going for sometime. Sometimes when starting the car the M and S transmissions lights will flash. Switch car off start up again no problem, drive for few days and even 200km and then problem again.
    This was diagnosed last year as faulty inhibitor switch and replaced with second hand one. Fixed problem for a while. Then recurred.
    Battery died and replaced which improved things.
    Second problem which is much more recent which may or may not be related is that the engine will suddenly die with no power (but steering and brakes still powered). First time occurred. Stop and restarted. No lights flashing or anything.
    Has occurred 3 more times but these times accompanied by a lot of smoke from exhaust and burning smell. All have occurred with 5 mins from home. Car not overheated and fuel in tank. Car restarts and drives normally afterwards with no smoke and normally acceleration. Have driven nearly 500km between 2nd and 3rd event.
    Serviced by local mechanics who have changed fuel filter and oil filter between 2nd and 3rd event. No problem found.

    I am guessing electrical problems or fuel pump but this is based on a complete lack of mechanical knowledge (human physiological problems are my area of knowledge)

    Many thanks in advance from the learned people here.

    Mods please move post or suggest forum to post if this is the wrong area.

    Hoping to keep Discovery going for a good few years but rather concerning when car suddenly loses power!!

  2. #2
    Join Date
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    Welcome to the forum. Sorry I can't help with your problem, but hopefully someone will come along soon who can.
    Don.

  3. #3
    Join Date
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    Is the smoke black? If so then the intercooler hose from the turbo at the intercooler may be delaminating on the inside and blocking airflow. This was a common occurrance with especially for earlier TD5s. Stopping the engine allows the delaminated inner layer to resume its normal position at least temporarily.
    MY21.5 L405 D350 Vogue SE with 19s. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
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  4. #4
    grayarea Guest
    Graeme

    Smoke is black and smell may almost be rubbery. Sounds like a place to look.

    Thanks for the suggestion.

  5. #5
    Join Date
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    X2 checking the turbo hose at that number of Kms.

    Re the M&S lights another place to look is for oil in the engine ECU loom.

    Unplug the red plug on the engine ECU (behind the battery) if there is oil there it's time to replace the loom, which is almost a routine service check now for these cars. In the short term give the plug a good cleaning with contact cleaner and that will resolve things for a bit.

    Cheers

    Steve

  6. #6
    Join Date
    May 2009
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    M& S lights flashing sounds like the inhibitor switch, AKA XYZ switch, to me.

    Very, very common problem with D2 automatic. The inhibitor switch lives on the side of the transmission directly underneath the air con drain hose so gets a pretty tough time. Plenty of info on this site (if you can find it) on this subject. I think we're up to about switch number 5 or so on our 2004 TD5 so I reckon you've done pretty well.

    Deano

  7. #7
    Join Date
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    The XYZ switch has been very thoughtfully placed under the drip pipes of the air con . Only an engineer at Land Rover would have had the forethought to do that.
    You can extend the drip pipes yourself with a bit of suitable clear pipe and tie them away from the XYZ switch. (situated either side in the transmission tunnel high up).
    I had the same probs and took the car to an auto shop. The mechanic there put it on a hoist and pulled the plug on the auto harness off. It was full of spilled (leaked) oil. After cleaning the plug pins with contact cleaner all my xyz probs went away including Limp Home which was a part of the deal.
    Welcome and best of luck.
    Regards Nick. (worane).

  8. #8
    grayarea Guest
    Will be disappointed if it is the inhibitor switch as cost $400+ for a second hand one last year. Has done less than 10K since then.

    Re checking oil on engine loom will have a look but as mentioned in original post very unmechanical.

    Will get mechanics to look at hose as seems best suggestion so far.

    Many thanks for all replies as will have saved a load of time and effort.

    Will keep posted as to progress.

  9. #9
    Tombie Guest
    How far / often do you drive?

    M&S is also a sign of a poorly charged battery...

  10. #10
    Fiddler Guest
    Quote Originally Posted by grayarea View Post
    Will be disappointed if it is the inhibitor switch as cost $400+ for a second hand one last year. Has done less than 10K since then.

    Re checking oil on engine loom will have a look but as mentioned in original post very unmechanical.

    Will get mechanics to look at hose as seems best suggestion so far.

    Many thanks for all replies as will have saved a load of time and effort.

    Will keep posted as to progress.
    I had the same or similar problem about 12 mths ago, engine would stop, by the time I got out opened the bonnet, kicked the tyres a few times, take the key out and lock the vehicle then open it again get in and it would start and not happen again for a few weeks or so, had a diagnostic done at the Land Rover service centre they installed a new harness, has not happened since. $1,200 ouch!

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