Robby Posted June 17, 2010 Share Posted June 17, 2010 When engaging Drive or Reverse (especially from one to the other) there is a big clonk coming from the gearbox. This is even more so when the car is cold and tickover is higher. I sometimes let it settle in Neutral in between changes to minimise this. Any idea what this could be? Quote Link to comment Share on other sites More sharing options...
absz Posted June 17, 2010 Share Posted June 17, 2010 When engaging Drive or Reverse (especially from one to the other) there is a big clonk coming from the gearbox. This is even more so when the car is cold and tickover is higher. I sometimes let it settle in Neutral in between changes to minimise this. Any idea what this could be? have you checked the oil level in the gearbox ? Quote Link to comment Share on other sites More sharing options...
Suprab1 Posted June 17, 2010 Share Posted June 17, 2010 I've never driven an auto supra but my grans polo done this aswell. Also my 6 speed gives a bit of a noise going into first (think its from the diff) but then again so does plenty other rwd cars/vans that i've driven. Does it change gears smooth? Quote Link to comment Share on other sites More sharing options...
Robby Posted June 17, 2010 Author Share Posted June 17, 2010 Yes that seems fine Quote Link to comment Share on other sites More sharing options...
Robby Posted June 17, 2010 Author Share Posted June 17, 2010 I've never driven an auto supra but my grans polo done this aswell. Also my 6 speed gives a bit of a noise going into first (think its from the diff) but then again so does plenty other rwd cars/vans that i've driven. Does it change gears smooth? Yep its very smooth once driving, basically it just engaging drive from neutral, or into reverse from drive, and vice versa. Quote Link to comment Share on other sites More sharing options...
Suprab1 Posted June 17, 2010 Share Posted June 17, 2010 Was it like this since you got it? Have you driven any other auto cars? Quote Link to comment Share on other sites More sharing options...
Stonkin Posted June 17, 2010 Share Posted June 17, 2010 Check your gearbox oil levlel mate (near the engine oil level dipstick) and make sure it is a nice red colour Quote Link to comment Share on other sites More sharing options...
Robby Posted June 17, 2010 Author Share Posted June 17, 2010 Was it like this since you got it? Have you driven any other auto cars? Yeah its always been like it. I've had the car five years but its been off the road the last eighteen months. I have driven lots of other auto cars, this definitely sounds an 'unhealthy' clonk!! Quote Link to comment Share on other sites More sharing options...
Suprab1 Posted June 17, 2010 Share Posted June 17, 2010 Yeah its always been like it. I've had the car five years but its been off the road the last eighteen months. I have driven lots of other auto cars, this definitely sounds an 'unhealthy' clonk!! Well if it sounds unhealthy i'd get the fluid changed. It could be the wrong type of ATF thats in there. It would be no harm to have fresh fluid anyway. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted June 17, 2010 Share Posted June 17, 2010 Its probably the diff. Quote Link to comment Share on other sites More sharing options...
Robby Posted June 17, 2010 Author Share Posted June 17, 2010 Its probably the diff. What does that entale?? Excuse my ignorance! Quote Link to comment Share on other sites More sharing options...
absz Posted June 17, 2010 Share Posted June 17, 2010 Its probably the diff. if its the diff or propshaft play then it normally clonks quite loud when you go from drive to reverse,or the other way even with your foot on the brake pedal as it taking up the slack in worn components. i would check the colour of the oil first, make sure its not brown in colour and has a burnt smell to it. also check to see if the idle is not too high. Quote Link to comment Share on other sites More sharing options...
paul mac Posted June 17, 2010 Share Posted June 17, 2010 dont worry about it mate mine does it aswell, i did a search on this years ago and it seems quite common Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted June 17, 2010 Share Posted June 17, 2010 As Abz said, backlash in worn gears means that when you put it into gear the slack causes a clunk. Change the diff oil, that might help If you check the oil in the gearbox make sure its in P, engine running Quote Link to comment Share on other sites More sharing options...
Jamesy Posted June 17, 2010 Share Posted June 17, 2010 Its probably the diff. http://www.mkivsupra.net/vbb/showthread.php?t=220763 Quote Link to comment Share on other sites More sharing options...
bluecoup Posted June 17, 2010 Share Posted June 17, 2010 mine does it a little too, just the driveline settling, your going to have some wear on it Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted June 18, 2010 Share Posted June 18, 2010 http://www.mkivsupra.net/vbb/showthread.php?t=220763 Quote Link to comment Share on other sites More sharing options...
MattP Posted June 18, 2010 Share Posted June 18, 2010 change the oil it makes a hell of a difference mine was making a loud clunk until i switched the oil and now its allot smoother theres a sump filter in the gearbox thats about £60 from toyota u should change that whilst your on Quote Link to comment Share on other sites More sharing options...
Robby Posted June 18, 2010 Author Share Posted June 18, 2010 change the oil it makes a hell of a difference mine was making a loud clunk until i switched the oil and now its allot smoother theres a sump filter in the gearbox thats about £60 from toyota u should change that whilst your on So does that mean its the gearbox not the diff? Quote Link to comment Share on other sites More sharing options...
Robby Posted June 18, 2010 Author Share Posted June 18, 2010 As Abz said, backlash in worn gears means that when you put it into gear the slack causes a clunk. Change the diff oil, that might help If you check the oil in the gearbox make sure its in P, engine running Backlash in worn gears doesn't sound good?! Would it be better to change the gearbox? Or Diff? Or both?! Quote Link to comment Share on other sites More sharing options...
Dave17 Posted June 18, 2010 Share Posted June 18, 2010 (edited) Backlash in worn gears doesn't sound good?! Would it be better to change the gearbox? Or Diff? Or both?! Alot of cars do this, the autos I tried before I chose mine did it. I don't think it's anything to worry about. I found that if your going from P to D or R that if you release the brake and let the car roll an inch or two it doesn't happen. The ones I tried did it quite noticably parked on steep hills. Edited June 18, 2010 by Dave17 (see edit history) Quote Link to comment Share on other sites More sharing options...
Robby Posted June 18, 2010 Author Share Posted June 18, 2010 Alot of cars do this, the autos I tried before I chose mine did it. I don't think it's anything to worry about. I found that if your going from P to D or R that if you release the brake and let the car roll an inch or two it doesn't happen. The ones I tried did it quite noticably parked on steep hills. Nail on the head! That's exactly the situation. Quote Link to comment Share on other sites More sharing options...
Robby Posted June 18, 2010 Author Share Posted June 18, 2010 Alot of cars do this, the autos I tried before I chose mine did it. I don't think it's anything to worry about. I found that if your going from P to D or R that if you release the brake and let the car roll an inch or two it doesn't happen. The ones I tried did it quite noticably parked on steep hills. From the above does anyone know exactly what is causing it and what needs changing? It may not be too much of an issue but its really annoying (especially when engine is cold) and I want to get it sorted! Cheers boys for the help, this is a great forum. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted June 18, 2010 Share Posted June 18, 2010 Like I said its the diff and associated wear in the drivetrain. Change the diff oil, see what (if anything) is on the drain plug (its magnetic). If theres big chunks of metal work then maybe think about changing the diff, but as with all things they eventually wear out. While youre down there see what condition the 'donut' is in, the big rubber bush at the end of the prop shaft near the diff. Auto boxes generally dont clunk and bang. So, in summary, check the condition and level of the gearox fluid, change the diff oil and see whats on the drain plug. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted June 18, 2010 Share Posted June 18, 2010 Where in Notts are you? Im in Lincoln so could pop paast on my way home and have a look? Quote Link to comment Share on other sites More sharing options...
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