Rookey Posted July 10, 2011 Share Posted July 10, 2011 I thought the autos were only 4 gears... I was on the track and hit 110, then all of a sudden the auto box found a 5th gear??!!!! Surprised the hell out of me Are auto boxes 5 gears then? If so, how come it doesn't kick in below 110mph, it would be much better for motorway driving... Cheers Dave Link to comment Share on other sites More sharing options...
Swampy442 Posted July 10, 2011 Share Posted July 10, 2011 The boxes are only 4 speed but the ECU does a bit of electronic jiggery pokery using the overdrive solenoid. You should be hitting 4th about 110 Link to comment Share on other sites More sharing options...
Kirk Posted July 10, 2011 Share Posted July 10, 2011 There 4 gear only, they never made a 5 speed auto. I think you've miss counted Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 10, 2011 Share Posted July 10, 2011 It would be the torque converter locking up. It locks up under certain mapped engine load, engine RPM, gearbox tailshaft speeds and fluid temperatures to increase economy and reduce emissions. Link to comment Share on other sites More sharing options...
Rookey Posted July 10, 2011 Author Share Posted July 10, 2011 Nope, I didn't miscount... Chris, if the Torque Converter locks up, is that bad for the box then? I've rarely taken it over 100 as you don't really get to on the track, I'm just curious... And if it locks up, what then becomes the top-end in an N/a with the fake 5th gear "jiggery pokery" Dave Link to comment Share on other sites More sharing options...
Swampy442 Posted July 10, 2011 Share Posted July 10, 2011 All torque convertors have a lock up speed, google it to see how one actually works Link to comment Share on other sites More sharing options...
Rookey Posted July 10, 2011 Author Share Posted July 10, 2011 Cheers googled and makes perfect sense! Link to comment Share on other sites More sharing options...
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