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UltimateWarrior

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About UltimateWarrior

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  1. UltimateWarrior

    Automatic gearbox issues

    Thanks for the comment. Funnily enough I did check the tyre pressures after taking it to the BMW Specialist and transmission specialist as I had read a similar thing on another forum. I found that one of the rears was down on pressure quite a bit, but sadly rectifying this did not sort my troubles. I’ve driven it some 500 miles since and things have got worse if anything! I’m on holiday at the moment, so will update again when progress (good or bad) has been made. Thanks also to the garage recommendations. Autotrans in Glos looks convenient, but the reviews on Google are worryingly mixed!
  2. UltimateWarrior

    Automatic gearbox issues

    Agreed, and this is why I am not booking the car in for a fluid change (at £300-400). As above, the only sensible plans I see are (1) waiting for deterioration to get to a level where diagnosis is possible, or (2) replacing the whole box now with a 2nd hand unit or reconditioning the box. Admittedly, pursuing option (1) may lead to taking option (2), but I see no upside in going ahead with replacing the whole box now, when there is a chance that the issue may be resolved by replacing just the knackered components, should a diagnosis occur before complete failure. Option (3) is PXing / selling the car and hoping that WBAC do not notice.
  3. UltimateWarrior

    Automatic gearbox issues

    Agreed. The plan is to wait until the symptoms are consistent enough that a transmission specialist will be able to diagnose. Though as said above by Andrew, there is still no guarantee that a firm diagnosis can be made due to the complexity of the transmission. I am based in Bristol, so any recommendations for a transmission specialist locally would be welcome. I’ve tried Bristol Transmissions, which have a good reputation, but a second opinion would be good. I currently work in Gloucester, so this would also be an option. Thanks!
  4. UltimateWarrior

    Automatic gearbox issues

    Ah, that would explain it, cheers! So my pressures are +/-200mbar, and well within range. False alarm on that front. Things are definitely deteriorating in the box behaviour, though. There seems to be more slurring between gears when accelerating, with not a whole lot of clutch lock up (according to the C110 scanner) until driving at a steady speed (or accelerating hard, oddly?). Behaviour on the motorway with cruise control is still ok, with no signs of the TC fluttering that initially kicked things off. What was the fault for your car?
  5. UltimateWarrior

    Automatic gearbox issues

    I did take the car back into the transmission specialist (Bristol Transmissions) and the only symptom they could recreate was the gear holding when accelerating through the gears. That’s not their fault, the issues are subtle and intermittent at the moment, which is a pain in terms of diagnosis! The verdict on seal failure was that it would fail / crack which would immediately flag errors and cause the box to go into safe model (3rd gear only?). There was no acknowledgement that leaking could occur prior to failure. I mentioned the C110 readings, and on this the message from the specialist was that readings greater than +300 (IIRC) would flag error codes and likely cause the box to go into failsafe mode. The readings that I quoted of >30000 were dismissed as spurious, in light of the above. I’m happy to admit that the C110 scanner is not the best, and certainly wouldn’t commit £1k+ on repairs on the back of my readings. The general view, therefore was to continue driving until more obvious symtoms appeared.
  6. UltimateWarrior

    Automatic gearbox issues

    Just to clarify, are we saying that the failing bridge seal is the likely culprit for all faults? Just that the TC was mentioned in the earlier comments. The recurring issues currently are: (A) the reluctance to change down a gear on ascending a hill (seems to be when cold), and (B) holding gears 3 / 4 until 2200-2500 rpm when general city driving. The fluttering when in 6th gear has not been obvious since the initial symtoms 3 weeks ago.
  7. UltimateWarrior

    Automatic gearbox issues

    The suggestion seemed to be that the torque was higher in certain JLRs, so they failed more frequently. I can see the logic there, if we’re talking solely about TC break up. What I don’t know is if TC clutch wear follows the same pattern. From my limited research, I understand that the TC clutch can be upset by pressure loss (i.e . failing seals) as much as anything else. I’m by no means expert though!
  8. UltimateWarrior

    Automatic gearbox issues

    Understood. I plan to take it back to the transmission specialists and see what they have to say. For what it’s worth, they were very dismissive last time about my suggestion of TC failure. Their verdict was that the BMWs with the ZF 6HP were not afflicted by such issues, and that it was more of a Jaguar / Land Rover issue.
  9. UltimateWarrior

    Automatic gearbox issues

    Thanks, so these are comparable to mine, with the exception of clutches C and E. Assuming that my values (from C110) are valid readings, does this point to a solonoid or two packing up? Just curious what could be the cause of low pressure / increased filling times other than: 1. Seals between valve body and transmission 2. Solonoids on valve body 3. Valve body itself My gear changes are not particularly harsh, so I’m hoping the transmission hardware is not yet in jeaopody. Perhaps just wishful thinking...!
  10. UltimateWarrior

    Automatic gearbox issues

    I think that makes sense, just curious if these are legit readings on C110. I’d appreciate if anyone could post their values for comparison. Rebuild sounds £££
  11. UltimateWarrior

    Automatic gearbox issues

    Just a minor update: No massive changes from behaviour described above, but I did snag the attached pics when snooping though the pages on my C110 scanner. Obvious outlier values on clutch C and E, though I don’t know how valid this data is in the C110?
  12. UltimateWarrior

    Error code 4667 (too frequent regen)

    That’s quite a change. Food for thought...
  13. UltimateWarrior

    Error code 4667 (too frequent regen)

    Has it been confirmed that swirl flap removal is causing more frequent regens? Has anyone done a before and after comparison?
  14. UltimateWarrior

    Automatic gearbox issues

    Interesting. I know the DPF has been regenerating a lot recently. It’s deteriorated a little over the past 6 months that I’ve been monitoring it, from every 200 miles to every 100-150 miles. My commute is 40miles of motorway, so ideal conditions really. The regens occur frequently, but do seem to be working in that they will reduce pressures down to ‘normal’ post regen levels (e.g. single digits at idle) Having said this, when accelerating rapidly the back pressure will reach 120 - 150mbar momentarily. I don’t know if this is out of the ordinary. I’ve been toying with getting the DPF gutted, but am concerned that the root cause is excess smoke from the engine - resulting in an MoT fail with the DPF gutted. Getting the thing cleaned would also be an option, but again, if the root cause is excess smoke then this will be a waste of money, and I’ll be back to square one.
  15. UltimateWarrior

    Automatic gearbox issues

    Buying a secondhand gearbox off eBay with unknown history is going to be a big risk. Great if you are doing the spannering yourself, but not for me. I don’t think I am confident enough that it is definitely the TC to be spending £1000 on a refurbished item...yet. First symptom is classic TC, but has not repeated itself. Has anyone suffered the second symptom in relation to TC failures?
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