E60 hesitation - torque convertor? |
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Andrew Rolland
Moderator Group Go away rain Joined: 19-August-2004 Location: Scotland Status: Offline Points: 6579 |
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Posted: 13-July-2010 at 11:06 |
Well it always pulls like a train when you give it some right foot. No noticeable difference when giving it some beans. I drive like Miss Daisy most of the time so I'm told on other forums if I can get 30mpg out of it....so I must be a fairly relaxed driver. The engine was smoother and quieter on idle, definately. Would that be related to better oil now it is veins? Or a 'new' electronic brainwash? Since I did the throttle/transmission reset it has driven differently, the shift points of the gearbox are at different rpms and road speeds. This might go to some way as to explain why I haven't felt the slight hessitation. The gearbox is in a lower gear for longer so it's not shifting into lock up in 5th until over 40mph, the problem was under 40mph before when it was going for a higher gear to early. Fuel consumption has not changed since I did the reset either so holding the lower gear for longer hasn't made any noticeable difference in juice drunk. It hasn't addapted to my driving style or changed the shift points in the two weeks since I did the reset. Will monitor it for longer and let you know. It's great to have it back, four days without...not good.... |
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Dergside
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The adaptive settings were probably reset to default during the software loads. If you noticed it then it probably means your driving style is a bit more relaxed and you should see it adapt to that again over the next couple of weeks. |
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Andrew Rolland
Moderator Group Go away rain Joined: 19-August-2004 Location: Scotland Status: Offline Points: 6579 |
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BMW confirmed that the autobox didn't need any software updates. They did manage to upload a few modules to the car, presumably for the DME. They didn't charge me for it as I suspect they had problems getting anything to uploaded to the car as they had it from 8am on Fri till 5pm yesterday (Mon). Pulled like a train all the way home yesterday and the engine was a bit quieter and smoother after the engine oil change. It only happened over two days once every 2 months but it hasn't happned since I did a throttle/tranmission reset recently. I'm happy, it hasn't cost me anything to have investigated and I have peace of mind with it. And that's what counts. Andrew |
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Peter Fenwick
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Hope all is sorted Andrew. This is the kind of issue that really puts you off auto boxes.
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Andrew Rolland
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Since my last post I carried out another throttle/transmission rest and ofcourse the car hasn't misbehaved since! BMW dealer advised that the software did need updating. Will report back after collecting car from dealer tomorrow. |
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Andrew Rolland
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Thanks again Nigel, I've got a response from ZF. They agreed with me that it could be a torque converter lock up clutch problem but they have advised firstly to make sure that the vehicles software is up to date (both the EGS and the DME) and also check that there are no engine related fault codes stored in the DME. ZF also said that BMW dealers are able to run a measures plan that will advise if the control unit require an update. It's booked in to Harry Fairbairns Giffnock for an Oil Service and a check of the above next week. |
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Andrew Rolland
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I have done a bit more digging on this on t'interweb. Since then I have carried out a transmission reset "turn ignition on, hold down throttle for for than 25 seconds then start car". Made a difference to the shifts of the 'box, much smoother but the judder/hesitation was still there. I was playing with on the way home, and I got it to miss behave in 5th gear in manual mode. Then it hit me. If I am in manual mode and in 5th gear it cannot be the shift from 5th to 6th, so it must be a fault with the torque converter lock up clutch engaging in 5th gear. Armed with that I'll make some enquiries with BMW and transmission specialist. Andrew |
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Andrew Rolland
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E-mail sent to Tom at ZF. Will wait and see. |
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Andrew Rolland
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Cheers Nigel. Yes it is a ZF box. I've spoken to the local transmission guy and he couldn't put a finger on it but every avenue is worth exploring. Andrew |
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Nigel
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I assume it's a ZF .... If so, drop them an email, I haven't been there for a while, any problems drop me a line and I'll ring them and find you a contact to talk to http://www.bavarian-board.co.uk/forum_posts.asp?TID=43712&am p;PN=1 |
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Best Wishes
Nigel |
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Andrew Rolland
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This little niggle has now happened 3 days running now, after being faultless for 2 months, when it only happened in one day. Car needs an oil serice so I'm going to book it in at my local BMW dealer. I have narrowed down when the fault happens fully up to temp, I'm fairly sure it is either a fault with the 5th to 6th gearshift or the 5th gear torque converter lock up clutch activation. Question is, will the BMW dealer be able to tell me if the car needs any form of software upgrade to the autobox when its in for a service? |
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Grizzle_E60
Advanced Newbie Joined: 09-December-2009 Location: Falkirk Status: Offline Points: 23 |
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eh well they said the gearbox is all day so i dropped it off about 9:30am i called at 4pm to see if everything was ok the gearbox SW was fine but they started the engine around 3:30-4 i imagine and they said it crashed due to an error with the file from Germany and it would be left overnight to programme it was ready at 2ish next day could be well over 12hrs but i really cant be certain how long it was the dealers after all lol. |
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Andrew Rolland
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cheers for that John Car hasn't gone anywhere for nearly a week on the account that one of my rims is more sort of square shaped! |
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Johnny conway
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Hi andrew, had a little kick at speed some time ago in my e39. Turned out to be the MAf Sensor according to the Main Dealer on that occasion. worth checking it out. good luck!. j |
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Brucie
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Andrew Rolland
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Cheers guys. I'll make some enquiries at Fairbairns. Will probably be over the Crimbo period. Grizzle_E60, how long was it actually plugged into the computer for? I had an issue with my eyebrow lights not coming on. Car was re-programmed within 2-3 hours. That was under warranty though, I'm out of warranty now of course! It was of course faultless this morning! Andrew |
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540 V8
Bavarian-Board Contributor Lick my badge Joined: 07-December-2005 Location: Running the asylum Status: Offline Points: 2280 |
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It's worth a stap Andrew. As there are more and more electronics and control units on vehicles nowadays and given control units are just like our home PC's, it's becoming more common for these control units to need 'flashware' updates. I get to see most of the technical bulletins at my place and in the last 6 months, I have seen at least 3 relating to various vehicles and systems. A lot of them are usually preventative where they have found a pattern of faults on a small number of vehicles and they roll out updates to vehicles within the scope. Most are usually carried out during routine service before any problems are noticed but sometimes problems manifest themselves before this can happen. Might be worth a call to your local dealer. Hope you sort it Mike |
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Grizzle_E60
Advanced Newbie Joined: 09-December-2009 Location: Falkirk Status: Offline Points: 23 |
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I had the same thing happen in my E60 its done 39k, it was booked into the
dealers 2 weeks ago for two days of softare upgrades on the engine and gearbox and its completely changed the car so much smoother and responsive, of course it was done under warranty at £75 per hour |
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Andrew Rolland
Moderator Group Go away rain Joined: 19-August-2004 Location: Scotland Status: Offline Points: 6579 |
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Drove it twice on Friday night after posting the above and of course it was as smooth and powerful as normal and behaved! I've spoken to a transmission specialist who said he would need to drive it to find out. He did mention a couple of things he has received service info on from ZF (who make the box) but nothing relating to this. He said the best thing to do is to monitor it. If it becomes more common bring it in. It does sound electronic to me, i.e. the 'box is telling something to engage when it shouldn't or disengage when it shouldn't. BMW dealers won't know anything about the autobox but yes they would have heard of service info from ZF also.
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Dergside
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Given that there is so much electronic frippery on the e60, is there any software or ECU code updates for the transmission on these? you are probably more aware than most about minding the transmission carefully so it might be worth starting in the electronic rather than the mechanical space. That might be a dealer question for a proper answer |
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Andrew Rolland
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A small update. Fault happened again today for the first time since posting the above 2.5 weeks ago. I am now fairly well convinced that it is the torque convertor lock up clutch. It's like the car is trying to change gear or engage the torque convertor lock up but not managing successfuly to do either. What makes me think that it's the torque convertor lock up clutch (TCC to save the typing!) is that at the road speed when the fault happens 30-40 mph the autobox will be in 4th or 5th gear under light throttle when the TCC will want to be kicking in to give you better mpg and reduce engine rpms. The TTC will only kick in when hot which is always the case. I have no other symptoms of this at any other road speed which is what is confusing me. It's fine when you give it the beans, fine at motorway speeds, there is no slip at speed when hitting an incline like classic friction clutch failure in a manual car. It is of course still intermittent and no doubt will behave itself on a test drive at a tranny specialist! Anyone got any thoughts? Andrew |
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