Carl Posted July 6, 2006 Share Posted July 6, 2006 I seem to have a problem with my auto box and was wondering if anyone has any ideas what it might be? If I am doing a steady 60mph and put my foot to the floor the gearbox will drop two gears to second and the car accelerates. It changes ok into third, foot still to the floor but goes all the way through third to the rev limiter and bounces off again but does not change untill I let my foot of the gas. Clearly this is not right as it should change through all four gears automaticaly. It goes through all four gears fine when not flooring it. I defiantely dont have it in manu mode or the buttom pushed for only three gears. What could be causing this and is it adjustable somewhere. Carl Quote Link to comment Share on other sites More sharing options...
Ian R Posted July 6, 2006 Share Posted July 6, 2006 Its the way you use your right foot if you floor it, it will push the car right through the rev band if you ease you foot off it should change up. If you do put your foot to the floor it will kick down thats the idea of the Auto box .... Quote Link to comment Share on other sites More sharing options...
Carl Posted July 6, 2006 Author Share Posted July 6, 2006 Yes, but surely the idea is for the autobox to change automaticaly. Once the limit for that gear is reached it should change up automaticaly. I appreciate with your foot right down it will rev to red line but it should still change up without me coming off the pedal, surely? Unless this is a Supra thing. Does everyone else with the auto have to come of the gas to get fourth when flooring it through these gears? Quote Link to comment Share on other sites More sharing options...
Ian R Posted July 6, 2006 Share Posted July 6, 2006 Are you saying it doesn't change from 3rd to fourth at all mine does at 7.5 when planted Quote Link to comment Share on other sites More sharing options...
Carl Posted July 6, 2006 Author Share Posted July 6, 2006 Yes, thats what I am saying, It just bounces of the limiter till I release the pedal to allow it. This cant be right. Just wondering if anyone else has had this fault and what might be causing it. I have only owned the car a week and didnt pick up on it during the test drive as I never went to any great speed to experience it. Carl Quote Link to comment Share on other sites More sharing options...
Ian R Posted July 6, 2006 Share Posted July 6, 2006 Nope thats not right mate hopefully a techie will come along and help Quote Link to comment Share on other sites More sharing options...
LeeT Posted July 6, 2006 Share Posted July 6, 2006 Are you saying it doesn't change from 3rd to fourth at all mine does at 7.5 when planted 7.5 WHAT? Quote Link to comment Share on other sites More sharing options...
Carl Posted July 6, 2006 Author Share Posted July 6, 2006 Ok, maybe I got strange Gremlins. I went back out in it to double check things. Floored it from every which way at all speeds including standing starts and it changed faultlessly everytime. How strange. Maybe because the previous owner drove it so carefully it wasn't used to the rev range up there. Anyway, couldnt get it to do anything wrong now. Hopefully it was some strange one off thing or else I caught the box right at a very bad gear change point. Anyway, feel better now it seems ok again. I can sleep again tonight-lol.. Quote Link to comment Share on other sites More sharing options...
Carl Posted July 6, 2006 Author Share Posted July 6, 2006 Ok, I must have an intermittent problem. The gear change did the same thing again earlier. 3rd gear to 4th gear just didnt want to change untill I let of the gas a bit. Any techies with ideas. Transmission fluid?, or something more sinister? Help appreciated as its concerning me now. Carl Quote Link to comment Share on other sites More sharing options...
absz Posted July 6, 2006 Share Posted July 6, 2006 check for low transmission oil first. i have the same problem with mine but it has only started since i removed my traction butterfly on the throttle body. gear change is fine until it goes from 3rd to 4th it revs over 7/7.5k before changing up. Quote Link to comment Share on other sites More sharing options...
Carl Posted July 6, 2006 Author Share Posted July 6, 2006 Well mine will hit the rev limit and still not want to change untill I let of a little. Feels like Im gonna damage the engine when it doesnt change. It's not that I particualrly drive the car hard much but now I have noticed it, I want to put it right. Carl Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted July 6, 2006 Share Posted July 6, 2006 Do these 'boxes have kickdown cables? Quote Link to comment Share on other sites More sharing options...
mattanna Posted July 6, 2006 Share Posted July 6, 2006 sounds daft but is overdrive on?, if not you will only have 3 gears Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 6, 2006 Share Posted July 6, 2006 If J-Spec suspect speedo cnvertor or top speed delimiter, if fitted. Quote Link to comment Share on other sites More sharing options...
Carl Posted July 7, 2006 Author Share Posted July 7, 2006 If J-Spec suspect speedo cnvertor or top speed delimiter, if fitted. It is a J-Spec. What does all that mean, speedo convertor etc, is this easily fixed? Whats involved in getting this checked out?. Cheers Carl ps-mattanna-Over drive was definately not on. Quote Link to comment Share on other sites More sharing options...
Scoboblio Posted July 7, 2006 Share Posted July 7, 2006 When the Japanese cars are imported they read in KMH, not MPH. They also have a top speed limiter which prevents the car from going above 112mph (180kmh). There are different ways of changing the speedo reading, and removing the limiter. Most popular choice is a combined box which sits behind the centre console (probably near the clock), intercepts the speedo signal and changes it. It's easy to remove the centre console to take a look at the wiring Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 7, 2006 Share Posted July 7, 2006 A lot of erly imports had the converor in the gearbox loom, under the car, where water eventually gets into the unit, and they play up, often with similar faults to those you describe. I can have a look and fix this, see my sig for contact info. Cheers. Quote Link to comment Share on other sites More sharing options...
Lewis Posted July 7, 2006 Share Posted July 7, 2006 ps-mattanna-Over drive was definately not on. Do you mean it wasn't off? For forth gear you should have overdrive on (ie, the O/D off light should not be illuminated) Quote Link to comment Share on other sites More sharing options...
Carl Posted July 7, 2006 Author Share Posted July 7, 2006 Do you mean it wasn't off? For forth gear you should have overdrive on (ie, the O/D off light should not be illuminated) Sorry, I meant overdrive was on, eg no light illuminated... Quote Link to comment Share on other sites More sharing options...
Guest JS_TT Posted July 9, 2006 Share Posted July 9, 2006 Hey Carl. Haven't been on here much since you collected the car. Anyway, hope I can help a bit... Car has definitely been delimited, and doesn't have speed cut. If you floor it, literally pedal to the floor so that it kicks down, it will go through all the gears to the top of 3rd (120mph ish).. you need to take your foot off the kickdown to change up into 4th. If the pedal is still pressing the kickdown, then it won't upshift. This is just the way they are I believe (having heard of it and witnessed it in other cars); there's definitely nothing wrong with the gearbox I can assure you. Autobox fluid was changed just after I got the car, so it's been in roughly 2-1/2 years. Quote Link to comment Share on other sites More sharing options...
Carl Posted July 9, 2006 Author Share Posted July 9, 2006 Hey Carl. Haven't been on here much since you collected the car. Anyway, hope I can help a bit... Car has definitely been delimited, and doesn't have speed cut. If you floor it, literally pedal to the floor so that it kicks down, it will go through all the gears to the top of 3rd (120mph ish).. you need to take your foot off the kickdown to change up into 4th. If the pedal is still pressing the kickdown, then it won't upshift. This is just the way they are I believe (having heard of it and witnessed it in other cars); there's definitely nothing wrong with the gearbox I can assure you. Autobox fluid was changed just after I got the car, so it's been in roughly 2-1/2 years. Cheers John for that, I have heard this from others but it just seemed a little odd thats all. Other than that, all seems fine. Pleased as punch. Just got back from a Supra meet at Intopro in Bristol. Even if it had of turned out to be a strange fault, I'd have just got it repaired John. As far as I am concerned I have bought a genuine looked after car and am very pleased with it. How you getting on with the Car search anyhow? Carl Quote Link to comment Share on other sites More sharing options...
Guest JS_TT Posted July 9, 2006 Share Posted July 9, 2006 Glad to hear it's all going well for you, you should get many years of pleasure out of the car. I'm missing it now as I don't actually have anything to drive at the moment! I must admit that the redline at 120mph was not something I did that often, but it certainly doesn't seem to harm the car if it happens now and again. Just missed out on a nice dark blue 911 Turbo, but heard afterwards that it had problems... now got my eye on a red one that has only done 57k and which the same guy has owned since 1992... http://www.eporsch.co.uk/Turbo2Red.htm http://www.eporsch.co.uk/images/Turbo2RedB2.jpg http://www.eporsch.co.uk/images/Turbo2RedB4.jpg Did you manage to get anything sorted with the Tomcat yet? Quote Link to comment Share on other sites More sharing options...
Guest JS_TT Posted July 9, 2006 Share Posted July 9, 2006 BTW. Have you figured out the headunit yet? Quote Link to comment Share on other sites More sharing options...
Carl Posted July 9, 2006 Author Share Posted July 9, 2006 Porsche looks nice. Should be quite an animal. I have not really done much with the cd player other than load in 6 discs and play-lol. Might look into settting it up properly at some point when I find a spare moment. Carl Quote Link to comment Share on other sites More sharing options...
Miguel Posted July 9, 2006 Share Posted July 9, 2006 Glad to hear it's all going well for you, you should get many years of pleasure out of the car. I'm missing it now as I don't actually have anything to drive at the moment! I must admit that the redline at 120mph was not something I did that often, but it certainly doesn't seem to harm the car if it happens now and again. Just missed out on a nice dark blue 911 Turbo, but heard afterwards that it had problems... now got my eye on a red one that has only done 57k and which the same guy has owned since 1992... http://www.eporsch.co.uk/Turbo2Red.htm [qimg]http://www.eporsch.co.uk/images/Turbo2RedB2.jpg[/qimg] [qimg]http://www.eporsch.co.uk/images/Turbo2RedB4.jpg[/qimg] Did you manage to get anything sorted with the Tomcat yet? Am Man after my own heart ..Oops Hijack:) Quote Link to comment Share on other sites More sharing options...
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