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adamr
Member Since: 05 Jul 2023
Location: Sheffield
Posts: 4
  
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Hi all,
Had the dreaded 'transmission fault, limited gears available' 'special program disabled' fault flash the other day.
Had the codes read and they were the following:
P0730-00 - incorrect gear ratio
P0735-00 incorrect 5th ratio
P0729-00 incorrect 6th ratio
P0731-00 incorrect 1st ratio
P0736-00 incorrect reverse ratio
The car went into limp and couldn't clear by restarting. Had the codes cleared by a friend and I had 1 'transmission fault' error but no limp.
Now what I change between drive and reverse I can get the fault to appear.
About a year ago the E-clutch was replaced.
Ive had the earth strap checked and when I looked at the voltage whilst running (using a multimeter) it was 13.5-13.8.
Has this box catastrophically failed, or is the fact that they all appeared at once more indicative of an electrical fault?
I'm based in Sheffield so any suggestions for a specialist would be helpful. Gave strong money for it only 13 months ago and with it having gearbox work done I thought it might be ok.... rookie error.
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 7th Aug 2024 5:12 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10694
 
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With so many gear faults maybe worth checking the oil level.
It’s done with engine running.
Or maybe a solonoid fault that those gears rely on
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| 7th Aug 2024 5:17 pm |
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loanrangie
Member Since: 18 Jun 2017
Location: Melbourne
Posts: 701
 
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Most of those can be caused by failing solenoids and or lack of fluid pressure.
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| 7th Aug 2024 11:58 pm |
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adamr
Member Since: 05 Jul 2023
Location: Sheffield
Posts: 4
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Had the solenoids replaced yesterday. Mechanic reported burnt oil and a lot of swarf and so wasn't hopeful that it had solved the problem. Previous ownder told me that the trans was rebuilt twice and the person that rebuilt it said it would outlive the car 
Anyway today, when using the kick down on a hill the 'F' came back -so now I'm out of ideas.... Think it's time to send it for breaking? Don't fancy throwing more money at it.
Any thoughts as to what else it could be?
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| 1st Sep 2024 11:28 am |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10694
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I would have thought the engine was quite valuable?
So don't get rid for less than £800 complete ?
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| 1st Sep 2024 11:45 am |
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Dave T
Member Since: 03 Jul 2009
Location: Glasgow
Posts: 6910
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£800  I paid a lot more than that from a scrappy in 2011 before everyone wanted one!! Joined the BMWX5 45e group
1994 Defender 90
2015 RRS Corris Grey/Black roof
2016 D4 Graphite Santorini Black
2012 D4 XS Orkney Grey
2005 D3 S Maya Gold
Convoy for Heroes 2011
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| 4th Sep 2024 5:33 am |
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loanrangie
Member Since: 18 Jun 2017
Location: Melbourne
Posts: 701
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adamr wrote:Had the solenoids replaced yesterday. Mechanic reported burnt oil and a lot of swarf and so wasn't hopeful that it had solved the problem. Previous ownder told me that the trans was rebuilt twice and the person that rebuilt it said it would outlive the car
Anyway today, when using the kick down on a hill the 'F' came back -so now I'm out of ideas.... Think it's time to send it for breaking? Don't fancy throwing more money at it.
Any thoughts as to what else it could be?
Cant have been a good job on the rebuild or they skimped out, likely burnt friction rings or converter.
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| 5th Sep 2024 6:35 am |
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Devon Z
Member Since: 14 Nov 2019
Location: Brixham Devon
Posts: 251
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Mine throws codes incorrect gear/fifth gear when towing the van, twice the other day on way down to Cornwall, faultless rest of the time been like it 4 years and I only tow once a year.
I really struggle with the cost of a rebuild, would love to but!!!! Steve
*2005 RR Sport 2.7tdv6 HSE. Current project.
*98 Volvo V70R FWD, owned 14 years, future project.
*99 BMW Z3 30k miles owned from new.
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| 5th Sep 2024 4:44 pm |
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Cheeko
Member Since: 04 Jul 2024
Location: Leeds
Posts: 232
 
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Tell me about it I’ve just wrote a post asking for help with our lasses dads good while there good nightmare when faulty 😢
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| 5th Sep 2024 6:54 pm |
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adamr
Member Since: 05 Jul 2023
Location: Sheffield
Posts: 4
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Been quoted between 1700 and 2500 + vat for a full rebuild from a reputable place. Problem is i'm so deep in now it's worth no where near what I've dropped on it.
Is it worth swapping the brake light switch just in case? Clutching at straws here
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| 13th Sep 2024 1:33 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10694
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Clutching at straws.
2500 seams going rate
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| 13th Sep 2024 2:10 pm |
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