Alex_GT Posted January 21, 2017 Share Posted January 21, 2017 I had the oil changed a week ago in my diff to see if it would cure the traction issues I have been having, but no luck as of yet. Even under low acceleration, if the car is not straight one of the wheels will spin (although it has never activated the slip control strangely). If I am turning left or right at a junction, it's almost impossible to pull away from standing without one of the wheels spinning; it is always the wheel on the inside of the turn. It has done this ever since I have owned it, is this normal? Even when very slowly pulling away I can feel and hear the tyre losing traction on the road. Quote Link to comment Share on other sites More sharing options...
SupraLEDrears Posted January 21, 2017 Share Posted January 21, 2017 I had the oil changed a week ago in my diff to see if it would cure the traction issues I have been having, but no luck as of yet. Even under low acceleration, if the car is not straight one of the wheels will spin (although it has never activated the slip control strangely). If I am turning left or right at a junction, it's almost impossible to pull away from standing without one of the wheels spinning; it is always the wheel on the inside of the turn. It has done this ever since I have owned it, is this normal? Even when very slowly pulling away I can feel and hear the tyre losing traction on the road. Trd or welded diff? Quote Link to comment Share on other sites More sharing options...
Scooter Posted January 22, 2017 Share Posted January 22, 2017 If the wheel is properly spinning up then it sounds like you simply have an open diff, plus maybe not great tyres? LSD and top notch tyres will help but in these temps you are still likely to spin up if a bit 'digital' with the throttle. Quote Link to comment Share on other sites More sharing options...
Alex_GT Posted January 22, 2017 Author Share Posted January 22, 2017 When I took it to Toyota they said it was LSD. The tyres are Falken Azenis FK453 all round, they have only done around 5000 miles I think. Quote Link to comment Share on other sites More sharing options...
Hitbox Junkie Posted January 22, 2017 Share Posted January 22, 2017 (edited) If it's a lsd then if you park on a road and bit of grass then give it some beans both wheels will spin. If it's open/broken then one whe'll on the grass will Spin. That's how I would do a quick test but try to be as safe doing it. Or doing the same under heavy throttle in the road strsight both wheels will spin if it's lsd if it's open then one will spin. If the diff is welded then turning at low speeds in a tight circle you may get wheel hop on one of the wheels. Other than that opening up the diff your self would tell you what you've got. But as above tyre conditions whether condition and how much throttle etc all contributes. If it's lsd then no I would say it's not normal. But sounds like a welded diff. Edited January 22, 2017 by Hitbox Junkie (see edit history) Quote Link to comment Share on other sites More sharing options...
ripped_fear Posted January 22, 2017 Share Posted January 22, 2017 If it's still the factory diff what is the code on the van plate. Quote Link to comment Share on other sites More sharing options...
Alex_GT Posted January 22, 2017 Author Share Posted January 22, 2017 The code on the plate is A02A, but when I took it to the Toyota dealer for an MOT they said it is an LSD unit that is fitted. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted January 22, 2017 Share Posted January 22, 2017 I had the oil changed a week ago in my diff to see if it would cure the traction issues I have been having, but no luck as of yet. Even under low acceleration, if the car is not straight one of the wheels will spin (although it has never activated the slip control strangely). If I am turning left or right at a junction, it's almost impossible to pull away from standing without one of the wheels spinning; it is always the wheel on the inside of the turn. It has done this ever since I have owned it, is this normal? Even when very slowly pulling away I can feel and hear the tyre losing traction on the road. A welded diff or seized planetary gears in a diff will do that. Around corners the outside wheel has to turn faster than the inside wheel. A welded or seized diff will cause one tyre to scrabble to attain the same RPM as the other. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted January 22, 2017 Share Posted January 22, 2017 Oh, and lousy LSD's like Cusco or Kaaz will do this, often making alarming banging noises at the same time. Special oil additives can help. Quote Link to comment Share on other sites More sharing options...
Scooter Posted January 22, 2017 Share Posted January 22, 2017 The code on the plate is A02A, but when I took it to the Toyota dealer for an MOT they said it is an LSD unit that is fitted. IMO it sounds as though it's per the vin and is an open diff, loads of people think all tt's had a LSD, maybe whoever at Toyota was not as knowledgable as they thought? Quote Link to comment Share on other sites More sharing options...
Alex_GT Posted January 22, 2017 Author Share Posted January 22, 2017 Well I assumed they had the car on the lift and looked at it, I asked them to look at this issue at the same time as the MOT. I have been trying to get an A02B diff so I could swap it and have a look at the one that is currently fitted so the car wouldn't be off the road (I need it for work), but there seems to be hardly any about, and aftermarket LSD's seem to be really expensive. Quote Link to comment Share on other sites More sharing options...
Scooter Posted January 22, 2017 Share Posted January 22, 2017 If you are keen I think you can access all the back plate bolts so you could drain the fluid, undo these, pry the cover off, find out what you have, then clean, reseal and refill. Quote Link to comment Share on other sites More sharing options...
Alex_GT Posted January 22, 2017 Author Share Posted January 22, 2017 I've actually ordered a borescope to see inside without having to disassemble some parts. They are difficult to find online so I am waiting for it to be delivered. Quote Link to comment Share on other sites More sharing options...
and1c Posted January 22, 2017 Share Posted January 22, 2017 A02A - Open diff.. http://www.mkivsupra.net/vbb/showthread.php?300975-A02A-A02B-Diff-how-tell-the-difference Quote Link to comment Share on other sites More sharing options...
David P Posted January 23, 2017 Share Posted January 23, 2017 Not wishing you the worst scenario, but if it has died, please don't bin the prop flange, that's a wanted component and worth £25 to you. Quote Link to comment Share on other sites More sharing options...
Alex_GT Posted January 23, 2017 Author Share Posted January 23, 2017 Why would I throw away the prop flange? Would I not need it when installing a new diff? Quote Link to comment Share on other sites More sharing options...
David P Posted January 23, 2017 Share Posted January 23, 2017 Every diff has one and most peeps throw it away sooner than get their hands dirty. Quote Link to comment Share on other sites More sharing options...
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