dr_jekyll Posted August 9, 2014 Share Posted August 9, 2014 bit of a weird one . been testing a car on a runway today and it accelerates hard upto 5000rpm in top/4th gear (auto) then just shuts off power like a limiter it will rev right through to 6800 in 2nd and 3rd but when it changes to 4th just as it gets to 5000rpm approx. 140mph on 275/40/18 with 4.08 diff it just stops, could it be the factory limiter rearing its ugly head even though the car is changed to mph via the vss? Quote Link to comment Share on other sites More sharing options...
The Raven Posted August 9, 2014 Share Posted August 9, 2014 Uk cars where set to about that if i recall? Quote Link to comment Share on other sites More sharing options...
dr_jekyll Posted August 9, 2014 Author Share Posted August 9, 2014 sorry, its a j spec car Quote Link to comment Share on other sites More sharing options...
Dnk Posted August 9, 2014 Share Posted August 9, 2014 Uk cars where set to about that if i recall? Uk cars were 155 mph, well my uk auto was Quote Link to comment Share on other sites More sharing options...
The Raven Posted August 9, 2014 Share Posted August 9, 2014 No idea then, thought once you get past the Jspec 112 limter it was smooth sailing upto running out of power? Quote Link to comment Share on other sites More sharing options...
gordy.r Posted August 9, 2014 Share Posted August 9, 2014 Could it be fuel cut? Quote Link to comment Share on other sites More sharing options...
dr_jekyll Posted August 9, 2014 Author Share Posted August 9, 2014 yes the car was still accelerating beautifully, then it just dies as if I get right off the throttle - - - Updated - - - Could it be fuel cut? it dosent feel harsh like fuel cut and its got an emu fitted to prevent that Quote Link to comment Share on other sites More sharing options...
gordy.r Posted August 9, 2014 Share Posted August 9, 2014 You my j spec auto does this around the 120 mark and I just put it down to fuel cut as I don't have a defender fitted. But it doesn't do it all the time. Strange one, no idea what yours could be then as there's quite a difference between the limited 112 and the 140 your experiencing it at? Quote Link to comment Share on other sites More sharing options...
dr_jekyll Posted August 9, 2014 Author Share Posted August 9, 2014 120mph is around the stock speed limiter when our does it its it quiet sooth or harsh, the only other car ive it the limiter in was a manual so it was uber harsh but maybe the torque converter takes the brunt in the auto so it smoother? Quote Link to comment Share on other sites More sharing options...
straightsix Posted August 9, 2014 Share Posted August 9, 2014 Speed limit cut was always smooth on my Auto Quote Link to comment Share on other sites More sharing options...
gordy.r Posted August 9, 2014 Share Posted August 9, 2014 120mph is around the stock speed limiter when our does it its it quiet sooth or harsh, the only other car ive it the limiter in was a manual so it was uber harsh but maybe the torque converter takes the brunt in the auto so it smoother? Yeah but mine is meant to have a delimiter fitted, and some times will go over the 120 mark (private roads and autobahn obviously), it seems intermittent and is a sudden loss of power but if I repress the accelerator it will accelerate again. Strange. Quote Link to comment Share on other sites More sharing options...
dr_jekyll Posted August 9, 2014 Author Share Posted August 9, 2014 Does the emanage ultimate have the speed limit defender function? Quote Link to comment Share on other sites More sharing options...
Dazzi Posted August 9, 2014 Share Posted August 9, 2014 Here you go Quote Link to comment Share on other sites More sharing options...
straightsix Posted August 9, 2014 Share Posted August 9, 2014 3uz-fe???? Quote Link to comment Share on other sites More sharing options...
Dazzi Posted August 10, 2014 Share Posted August 10, 2014 Ignore that lol Quote Link to comment Share on other sites More sharing options...
Gpro Posted August 11, 2014 Share Posted August 11, 2014 fuel starvation? what fuel pump have you got Quote Link to comment Share on other sites More sharing options...
Nodalmighty Posted August 11, 2014 Share Posted August 11, 2014 bit of a weird one . been testing a car on a runway today and it accelerates hard upto 5000rpm in top/4th gear (auto) then just shuts off power like a limiter it will rev right through to 6800 in 2nd and 3rd but when it changes to 4th just as it gets to 5000rpm approx. 140mph on 275/40/18 with 4.08 diff it just stops, could it be the factory limiter rearing its ugly head even though the car is changed to mph via the vss? ECU also also gets rpm info for the auto box overdrive speed sensor so your VSS converter won't be working in this case. The ODS Sensor is also VR as oppose to Hall so a conventional speedo clamp might not work. Disconnect the ODS sensor and see if that works as it might default to the VSS sensor (It's the one nearest the bell housing). Lyndon. Quote Link to comment Share on other sites More sharing options...
Guest Budz86 Posted August 13, 2014 Share Posted August 13, 2014 My guess is fuel starvation. What spec is the car? Quote Link to comment Share on other sites More sharing options...
Jord Posted August 13, 2014 Share Posted August 13, 2014 How has no one made a "my car topped out at 140, I need NOS" reference in this thread yet? Quote Link to comment Share on other sites More sharing options...
Scott Posted August 13, 2014 Share Posted August 13, 2014 Why* Quote Link to comment Share on other sites More sharing options...
dr_jekyll Posted August 13, 2014 Author Share Posted August 13, 2014 Its not fuel starvation its hiting the limiter. Quote Link to comment Share on other sites More sharing options...
Shane Posted August 13, 2014 Share Posted August 13, 2014 ECU also also gets rpm info for the auto box overdrive speed sensor so your VSS converter won't be working in this case. The ODS Sensor is also VR as oppose to Hall so a conventional speedo clamp might not work. Disconnect the ODS sensor and see if that works as it might default to the VSS sensor (It's the one nearest the bell housing). Lyndon.if its an electronic cut/limit then I am with Lyndon on this. Your speedo convertor presumably has a clamped output and its that what is fed to the ecu to get rid of the normal 112 limit and you quite obviously are way past that. Quote Link to comment Share on other sites More sharing options...
Shane Posted August 13, 2014 Share Posted August 13, 2014 Unless of course your speedo converter is only clamping up to 140 and then releases again. Quote Link to comment Share on other sites More sharing options...
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