coza Posted July 25, 2012 Share Posted July 25, 2012 Hi I have a twin turbo 5 speed but when I'm in 2nd gear it will go up to around 5900 ,3rd gear it only revs up to 5000rpm, 4th gear it's like 5100rpm don't have a clue why ? The speedo doesn't work either but been told that it needs a delimiter on it ? Would that affect the gears ? Quote Link to comment Share on other sites More sharing options...
TheTurtleshead Posted July 25, 2012 Share Posted July 25, 2012 Are the engine and ECU from an auto originally? Quote Link to comment Share on other sites More sharing options...
Ian C Posted July 26, 2012 Share Posted July 26, 2012 Not enough info Help us to help you! When you say it only goes up to 5x00 revs, do you mean it hits a rev limit and bounces off it, or it misfires, or it just runs out of guts and doesn't really accelerate past that point? TT 5spd = a conversion, yes? Quote Link to comment Share on other sites More sharing options...
coza Posted July 26, 2012 Author Share Posted July 26, 2012 Yes it was an auto and got converted to a 5 speed and Yh just no power at 5000 Rpm just holds there ?? Quote Link to comment Share on other sites More sharing options...
Ian C Posted July 26, 2012 Share Posted July 26, 2012 This and another thread prompted me to make this sticky: http://www.mkivsupra.net/vbb/showthread.php?274092-Help-us-to-help-you!-When-posting-technical-problems In there you'll find six bullet points that cover basic problem solving information. If you can answer those we can start helping diagnose what might be up Quote Link to comment Share on other sites More sharing options...
coza Posted July 26, 2012 Author Share Posted July 26, 2012 Okay il start again the car is a 1994 import Gz which has been convert to a tt5 speed and it used to be an auto NA The sympotoms are in 2nd 3rd & 4th the car won't go above 5500rpm just holds there ? I brought the car yesterday so havnt a clue what to do on how to fix it ? Quote Link to comment Share on other sites More sharing options...
TubbyTwo Posted July 26, 2012 Share Posted July 26, 2012 If the car is converted, is it still using the auto trans ecu? pull the carpet back in the passenger footwell and remove the cover to reveal the ECUs, and go from there. Quote Link to comment Share on other sites More sharing options...
Nodalmighty Posted July 26, 2012 Share Posted July 26, 2012 Hmmm. That sounds like the Auto ECU is enacting an ignition retard prior to a none existent gear change (if you still have an Auto ECU in it that is). Try wiring the L signal wire on the ecu to a 12v ignition switched feed. This will force the ECU into thinking it's in mechanical first gear "L" and won't try and change gear. Used to have the same problem when using Auto Camry ecu's on MR2 v6 conversions Lyndon. Quote Link to comment Share on other sites More sharing options...
coza Posted July 26, 2012 Author Share Posted July 26, 2012 That would make sense but I'm no mechanic and I dot have a clue about anything like that :s Quote Link to comment Share on other sites More sharing options...
Ian C Posted July 26, 2012 Share Posted July 26, 2012 What Nod said is a good starting point, and probably the answer. The ignition retardation would act like a soft limiter. If you're no mechanic you need to take this info & the potential fix to the mechanic that will be trying to sort it Or taking the car back to whomever sold it to you if it was sold as fully working -Ian Quote Link to comment Share on other sites More sharing options...
Nic Posted July 26, 2012 Share Posted July 26, 2012 That would make sense but I'm no mechanic and I dot have a clue about anything like that :s Lift the passenger side footwell carpet and you'll find a black plastic cover, remove the cover and you'll see 2 metal boxes behind it, the larger of the 2 is the ECU it should have a part number on it (something like this '89661‑14491') post up the part number so we can identify what ECU is fitted. Quote Link to comment Share on other sites More sharing options...
TheTurtleshead Posted July 26, 2012 Share Posted July 26, 2012 The thread in the link really needs to be stickied, or added into the auto to manual conversion guide in the tech section. This pops up every few months, sounds like the same problem anyway. Clicky, clicky! http://www.mkivsupra.net/vbb/showthread.php?249622-Neutral-safety-switch-Auto-Manual-Conversion-Engine-Light-Problem-5800-rev-limit&highlight=5800+rpm+rev+limit+pin Quote Link to comment Share on other sites More sharing options...
redsupraman82 Posted July 26, 2012 Share Posted July 26, 2012 Guys just to help out in this situation, it was my car that he brought. tbh everything was fine and i didnt even notice this was a problem until corren told me about it! the ECU in the car IS a manual one. and i had all the work properly checked over by ryan g once it was completed. when i done the TT swap i used the Engine, Loom and ECU that all came together. hope this helps Quote Link to comment Share on other sites More sharing options...
coza Posted July 27, 2012 Author Share Posted July 27, 2012 Just Drove home from a night shift no problem with the revs in any gear :s really confused now ??? Quote Link to comment Share on other sites More sharing options...
Ian C Posted July 27, 2012 Share Posted July 27, 2012 Perhaps a loose connection then, that's a big cause of intermittent issues Quote Link to comment Share on other sites More sharing options...
coza Posted July 27, 2012 Author Share Posted July 27, 2012 Took it out again 10 mins ago and now it's holding back again :/ starting to annoy me now , I watched the boost guage and it goes to about 0.6/7 then when it hits around 5000rpm the boost drops ? Quote Link to comment Share on other sites More sharing options...
Wez Posted July 27, 2012 Share Posted July 27, 2012 Boost leak, split hose? Quote Link to comment Share on other sites More sharing options...
coza Posted July 28, 2012 Author Share Posted July 28, 2012 Yh I seen a few people tonight and they recon the actuator on the 2nd turbo isn't working properly ?? Quote Link to comment Share on other sites More sharing options...
coza Posted August 6, 2012 Author Share Posted August 6, 2012 (edited) Fixed the problem I had a mate from driftbitz had a look and the turbo intake induction had a very soft hose where it was connected so when it got hot it was very weak so imploded restricting the power but I am happy now it has been fixed and the car runs like a dream ! Edited August 6, 2012 by coza (see edit history) Quote Link to comment Share on other sites More sharing options...
redsupraman82 Posted August 20, 2012 Share Posted August 20, 2012 good stuff mate! well happy! Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.