AudiPartner Posted April 18, 2016 Report Share Posted April 18, 2016 Apparently the oil was changed quite recently, but I'm experiencing some issues and I need to know whether its something I have to live with, or something that can be addressed. It's fine 80% of the time but... Firstly, when cold its very aggressive on change. Secondly it seems to almost "slip" between I think gears 3-4. Like you put your put down and the revs increase significantly, but without an increase in drive. It then drops back down and the car begins to pull. Finally, I've noticed when coming off the motorway (so when presumably nice and toasty warm) the down changes aren't particular smooth (sometimes, not always). Should I book in for another oil change? Is there anything else that can be done to these boxes? (2005 4.0 tdi) Link to comment Share on other sites More sharing options...
cruiser647 Posted April 18, 2016 Report Share Posted April 18, 2016 Do you know what fluid they used in the gearbox change? There were quite a few choices of fluid for that gearbox and engine combo. One of the bods here had issues when he bought his 4.0 TDi (from new) and they changed it a few times IIRC until they finally changed it for some sort of mega-expensive Audi fluid, which sorted the issue. I think there may have been somesort of Audi TSB thing for it. Fish out the paperwork for the fluid change and have a look. The chap who had the issues has posted it up in TSN A8 section. If I get a mo, I'll try to look for it. 1 Link to comment Share on other sites More sharing options...
AudiPartner Posted April 18, 2016 Author Report Share Posted April 18, 2016 I read elsewhere that the fluid must be the correct one. That would be awesome (and a huge relief) if a fluid change sorted the issue!! Link to comment Share on other sites More sharing options...
cruiser647 Posted April 18, 2016 Report Share Posted April 18, 2016 Calling Ian_C, calling Ian_C! He'll know for sure. It was a chap called Richard. He's now got a D4 4.2 TDi! Link to comment Share on other sites More sharing options...
RichardW Posted April 21, 2016 Report Share Posted April 21, 2016 Hi Jo, IanC alerted me to your problem which is not quite the same as mine was but I may be able to help. I have sent you a private message with my phone number. Give me a ring and I might be able to help with some info. Richard Link to comment Share on other sites More sharing options...
cruiser647 Posted April 22, 2016 Report Share Posted April 22, 2016 Hi Jo, IanC alerted me to your problem which is not quite the same as mine was but I may be able to help. I have sent you a private message with my phone number. Give me a ring and I might be able to help with some info. Richard Hi Richard, It's not me with the issue, it's Audi Partner. His 4.0 TDi gearbox is exhibiting 'issues' Link to comment Share on other sites More sharing options...
AudiPartner Posted April 22, 2016 Author Report Share Posted April 22, 2016 Cheers Lads, have just replied to Richards PM. Ok so I won't start a new thread for this, but I got in the car the other day and it turned on without me putting the key in?? How did i do that? (not the engine obvs, but the radio came on and screen cam up etc without me doing anything. Link to comment Share on other sites More sharing options...
cruiser647 Posted April 22, 2016 Report Share Posted April 22, 2016 Cheers Lads, have just replied to Richards PM. Ok so I won't start a new thread for this, but I got in the car the other day and it turned on without me putting the key in?? How did i do that? (not the engine obvs, but the radio came on and screen cam up etc without me doing anything. That's Magic! Another possiblity is that it's been programmed to do that if it senses the key and someone on the seat. Were you using a different key? Link to comment Share on other sites More sharing options...
AudiPartner Posted April 25, 2016 Author Report Share Posted April 25, 2016 That's Magic! Another possiblity is that it's been programmed to do that if it senses the key and someone on the seat. Were you using a different key? Nope. Link to comment Share on other sites More sharing options...
AudiPartner Posted July 25, 2016 Author Report Share Posted July 25, 2016 So i bit the bullet and paid £400 for the box oil to be renewed. Actually made the issue considerably more apparent. They then said there was a software update available so I felt I had no choice but to go for that too at £300. Made no odds apparently. Brilliant. They are saying now it must be a proper gearbox fault which obviously I cannot even entertain. But if its an issue with the box, why would replacing the gearbox oil make it worse?? Link to comment Share on other sites More sharing options...
Andy_Bangle Posted July 25, 2016 Report Share Posted July 25, 2016 Perhaps a previous owner had used a 'thicker' fluid or the old fluid was old/contaminated which effectively concealed the issue. Link to comment Share on other sites More sharing options...
Ian_C Posted July 25, 2016 Report Share Posted July 25, 2016 Old oil most likely. Link to comment Share on other sites More sharing options...
AudiPartner Posted July 27, 2016 Author Report Share Posted July 27, 2016 On 25/07/2016 at 8:00 PM, Ian_C said: Old oil most likely. Eh? I've just had the oil renewed. You saying they fitted old oil??? Link to comment Share on other sites More sharing options...
Andy_Bangle Posted July 27, 2016 Report Share Posted July 27, 2016 (edited) No the oil prior the change may of had a different viscosity through either being contaminated, the wrong oil or just being old then it might concealed the problem. New oil (clean and correct I assume) has made the issue considerably more apparent because it's more viscous. For example, if a seller is flogging a car with a knackered old engine or noisy differential they may be inclined to use a thicker oil grade, to temporarily conceal the problem Edited July 27, 2016 by Andy_Bangle to many big words Link to comment Share on other sites More sharing options...
Tipex Posted July 27, 2016 Report Share Posted July 27, 2016 Saw dust in the gearbox genuinely used to work (not as a fix, but temporarily making nasty noises go away). I've seen an old Rover K series engine packed with grease too, amazingly that worked at hiding nasty noises. Link to comment Share on other sites More sharing options...
cruiser647 Posted July 27, 2016 Report Share Posted July 27, 2016 (edited) Hi bought a Passat V5 with Tip. Slight gear change jerk when changing down from 5 to 4. so I got the fluid change and the jerk became a thump and a jerk, unless you used the tip and coasted. One of the fluid things had a hole and would not hold the pressure required when down changing. Hence the jerk and the new fluid removed any dwarf that was blocking the hole! D'oh! Edited July 27, 2016 by cruiser647 Link to comment Share on other sites More sharing options...
M8CKN Posted July 28, 2016 Report Share Posted July 28, 2016 I do hope that's your predictive text kicking in Cruiser? 2 Link to comment Share on other sites More sharing options...
AudiPartner Posted July 28, 2016 Author Report Share Posted July 28, 2016 20 hours ago, Andy_Bangle said: No the oil prior the change may of had a different viscosity through either being contaminated, the wrong oil or just being old then it might concealed the problem. New oil (clean and correct I assume) has made the issue considerably more apparent because it's more viscous. For example, if a seller is flogging a car with a knackered old engine or noisy differential they may be inclined to use a thicker oil grade, to temporarily conceal the problem the missus often uses cornflour to thicken sauces. I'll pop some in the gearbox. 4 Link to comment Share on other sites More sharing options...
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