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525dleigh

E60 gearbox slipping

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Hello all 

I recently posted about a loss in power in my 525d e60 55 reg.Having thought it was the engine losing power it turns out it is the gearvox i have the issue with.I have had the problem for 6-7 months of having no pull when going into 4th or 5th below 2000rpm so after a run to nottingham friday i could really feel the slipping especially in 5th when going 50 mph i put my foot down and the revs rise then fall and then it grips.I had the gearbox serviced about 8 months ago by a bmw specialist so unless he has ballsed it up i dont think its low fluid..what do you guys think it could be ? 

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Knackered torque converter, slipping clutches due to wear and tear, Notts has a backstreet specialist, RGA services, he would be able to sort it for you and would do a free check.

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14 hours ago, GoNz0 said:

Knackered torque converter, slipping clutches due to wear and tear, Notts has a backstreet specialist, RGA services, he would be able to sort it for you and would do a free check.

I am actually based in cannock i just took a trip for a course to notts.do you know of anyone nearer this area mate ? I have read a post somewhere about someone in birmingham who reconditions the torque converters for around £500 does that sound realistic ? 

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i know a gearbox specialist that delivered a torque converter for my e60 530d

his name is doug a great guy been reconditioning for years

this is his ebay ad for the 525

https://www.ebay.co.uk/itm/BMW-E60-E61-525d-2002-2007-6HP26-Re-manufactured-Torque-Converter-24407551821/272837871233?hash=item3f86678681:g:ttcAAOSwgKpZsVWP

i can also pm you his contact details if you want

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I only know my guy in Notts, also rule of thumb seems to be making sure you get your own TC refurbished due to so many variations.

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Get the codes read before you spend on anything else. The gearbox may be able to tell you exactly what the problem is and it may not be the torque converter (it doesn't sound like the TC to me).

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57 minutes ago, JasonH said:

Get the codes read before you spend on anything else. The gearbox may be able to tell you exactly what the problem is and it may not be the torque converter (it doesn't sound like the TC to me).

Bmw specialist had it on diagnostics last week and only throttle actuater came up.I am going to take it to a gearbox specialist as the bmw bloke i use is the one who serviced the box and if he hasnt done it right hopefully they will be able to tell me what is wrong and what may have caused it.Iv read it can be solenoids,low fluids,mechatronics etc im hoping the box hasnt gone itself it only has 75000 on it 

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i had the same problem with it slipping now with a recon torque converter from doug and a gearbox service its cured the slipping i used to get and also shifts properly

good luck anyway

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I have a rattling happening coming from drivers side the last few weeks, thought it was MOT advisory on arb bushes and arms but no......it seems to happen when accelerating to 20mph-30mph but maybe more but can't hear it. I've also tried it auto and manual and does it in both. I've got into Mackies in Glasgow after months of not getting round to the autobox service, on Andrew's and others suggestions plus other forums.. 

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1 hour ago, JASON530D said:

i had the same problem with it slipping now with a recon torque converter from doug and a gearbox service its cured the slipping i used to get and also shifts properly

good luck anyway

Just looked at the ebay link mate cheers for that if it turns out to be the tc i will use him he seems to know what he's doing with them.its always been abit jerky but it appears most are and need an update.how much did it cost altogether with labour ? Its abit of a ball ache as i had it seviced 8 months ago at £400 and it looks like i will have to pay for it again along with what ever else is wrong..ohh the joys of bmw maintanence maybe i should just buy a corsa :)

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1 hour ago, RightHandGoose said:

I have a rattling happening coming from drivers side the last few weeks, thought it was MOT advisory on arb bushes and arms but no......it seems to happen when accelerating to 20mph-30mph but maybe more but can't hear it. I've also tried it auto and manual and does it in both. I've got into Mackies in Glasgow after months of not getting round to the autobox service, on Andrew's and others suggestions plus other forums.. 

All my problems seem to have occured following the service maybe i should have just left it alone 

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around £600 all together i think because the tc needed a few litres of that lifeguard 6 before they put it back in.

i done the same thing had i serviced but didnt solve the problem with the slipping so i got the tc done and shifts and moves much better only slips abit when warming up also got rid of rev fluctuating

also get xhp gearbox flash and it will feel like a different car :)

Edited by JASON530D

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If it's had a recent gearbox service the  the sump can go back on. A second oil change is a good thing, you only get 6 litres out but the box contains 9. So it's not a total waste.

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it's perhaps a good idea to blow out any oil remaining in the heat exchanger as well, and totally refill with brand new LF6 - Think a refill from new inc HE and TC is about 10.5 litres

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10 hours ago, Steve AD said:

If it is TQ then see Sussex autos..

 

My mechanic has heard mixed reports about Sussex Autos.  That said, they are coming in about £300 cheaper to replace my gearbox with an off the shelf reman unit as opposed to having mine rebuilt.

 

I'm torn as what to do really...

Edited by Dotcom1970

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4 minutes ago, Steve AD said:

You can buy an additive for your gearbox to help with slip..if it fixes or massively helps then you have your answer

 

Not sure ZF would agree with that...LF6 is supposedly all you ever need - every 50K miles

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9 hours ago, Steve AD said:

You can buy an additive for your gearbox to help with slip..if it fixes or massively helps then you have your answer

I have heard about that additive but how bad it is slipping now it must be something serious.I am having to drive it in manual and in the lowest gear.Is there amy damage that can be caused by still driving it like this ?

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9 hours ago, Dotcom1970 said:

 

My mechanic has heard mixed reports about Sussex Autos.  That said, they are coming in about £300 to replace my gearbox with an off the shelf reman unit as opposed to having mine rebuilt.

 

I'm torn as what to do really...

I have read a few posts about people having their tcs done by sussex and after refitting they have the exact same problems.It is a risk if you then have to have it done again the bill will be equal to having a new one i would think 

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58 minutes ago, 525dleigh said:

I have read a few posts about people having their tcs done by sussex and after refitting they have the exact same problems.It is a risk if you then have to have it done again the bill will be equal to having a new one i would think 

 

I think I'm going to go with my Garage - The price is higher, but I have been given a full breakdown of what will be done etc.  The price includes the TC being rebuilt as well along with fitting etc.

 

They will also test the solenoids for correct operation and install the metal pan upgrade. it also comes with a 12 month 15000 mile warranty.

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Is your garage really going to the TC rebuilt themselves? The TC has to be cut open, rebuilt and welded back together.

 

Sussex Autos did a fantastic job on mine. Quick turnaround, TC cleaned and welded so it looked like new. Worked perfectly on the car.

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It's not unheard of 6HP boxes that have been serviced more than once to still fail at lowish miles.

It's also not unheard of 6HP boxes that have not been serviced to see more than 120,000 miles.

 

ZF and transmission specialists will tell you to get the box serviced at 60,000 miles but they make their money doing just that.

 

But a transmission specialist will tell you that many many things in an engine can produce the symptoms you describe. It's not unheard of for a camshaft sensor to throw a 6HP box into limp mode and leaving the owner thinking that they are going to be hit for a recon box at £3k.

 

Get it to a ZF transmission specialist who can properly diagnose the fault if it's in the engine or 'box. Other than doing that it's just guess work as to what's wrong with the box.

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