hadyn Posted December 18, 2006 Author Share Posted December 18, 2006 cruising at 2.5k/3k rpm Quote Link to comment Share on other sites More sharing options...
colsoop Posted December 18, 2006 Share Posted December 18, 2006 Hadyn What happens if you let off the accelerator and then get back on it again, does the second turbo kick in. I occasionally get this probelm when i drop it down a gear or 2 and then the second turbo doesn't kick in, and it sounds like you described. If i let off the throttle and get back on it again it comes online. Quote Link to comment Share on other sites More sharing options...
hadyn Posted December 18, 2006 Author Share Posted December 18, 2006 Havent tried that col, but I will do next time it happens. I just backed off on both occasions, drove on for a bit then planted my foot and everything was fine... Quote Link to comment Share on other sites More sharing options...
Lucifer Posted December 18, 2006 Share Posted December 18, 2006 Easy fix this one. Chang ethe pipework first 0.6mm hose from the left pipe that drops down (next to the Y Turbo outlet pipe at teh top of the engine ) to the VSV just under that hard pipe. if this does nto solve it change the VSV. The vsv you are lookign for is the one that controls the main Exhaust Flow under the Turbos - (laymans) hope this helps. Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted December 18, 2006 Share Posted December 18, 2006 fook, did an autobox change today and i prob underfilled it by about 100-200ml its not your box seems to be a common problem with TT's mine has done the same a few times, maybe worth putting a sticky in the troubleshooting pages about this Quote Link to comment Share on other sites More sharing options...
Mike M Posted December 18, 2006 Share Posted December 18, 2006 I bet it happens when you overtake someone after cruising for a while. First time you ask for 2 it isn't getting prespooled so the system is trying to bring on a dead turbo with No 1 boost escaping backwards through 2. The exhaust is also trying to turn 2 the normal way so it's in grid lock causing the engine to slowly rev. So when you change gear tubby 2 is slightly prespooled and shoots off when demanded but winds down when cruising and the same happens again. The EGBV VSV resistance should be around 22 - 26ohms mine was 70ohm to sometimes mega ohms. Fooked. I also put pressure on the EGBV actuator and excersised it with some teflon 3 in 1 on the rod. Hope this helps mate. This might too. http://www.mkivsupra.net/vbb/showthread.php?t=81617 Quote Link to comment Share on other sites More sharing options...
Sheefa Posted December 18, 2006 Share Posted December 18, 2006 I'd speak to Chris. Mine did this and he found out it did it too when he took her out on a fuelling run. It turned out that two of my turbo solenoids needed replacing. Good luck. Greg Quote Link to comment Share on other sites More sharing options...
RedM Posted December 18, 2006 Share Posted December 18, 2006 I'm starting to wonder if my problem isn't really the autobox now! Sodding cars. Quote Link to comment Share on other sites More sharing options...
Whitesupraboy2 Posted December 18, 2006 Share Posted December 18, 2006 This problem is not your autobox. Your gaining speed in relation to revs, your revs are just not rising as quickly as expected due to the fact No2 has not come online. Its a problem with the exhaust valves prespooling Turbo2. I'd do what Lucifier said and then speak to Chris if the problem still exists like Sheefa. My car also does exactly what your saying and fully letting off the throttle and reapplying it solves the problem at the time Quote Link to comment Share on other sites More sharing options...
RedM Posted December 18, 2006 Share Posted December 18, 2006 This problem is not your autobox. Your gaining speed in relation to revs, your revs are just not rising as quickly as expected due to the fact No2 has not come online. Its a problem with the exhaust valves prespooling Turbo2. I'd do what Lucifier said and then speak to Chris if the problem still exists like Sheefa. My car also does exactly what your saying and fully letting off the throttle and reapplying it solves the problem at the time If the revs go up to 6k-ish but I don't go anywhere then it'd be the box right? Quote Link to comment Share on other sites More sharing options...
hadyn Posted July 27, 2007 Author Share Posted July 27, 2007 Decided to bump this thread today. Im pretty sure this issue is not autobox related. Since fitting a boost gauge, I've never had this problem of no second turbo rush when planting it at 50+ mph cruising. Today this problem occured again, immediately when it happened I noticed that the car would not rise above 0 bar on my boost gauge, indicating that neither of the turbos was producing any boost?? I think this is suggesting that something such as a VSV is whats causing this problem. Quote Link to comment Share on other sites More sharing options...
jevansio Posted July 27, 2007 Share Posted July 27, 2007 Mine used to do this occasionally too (6sp manual), single conversion sorted it Sorry can't be any more help Quote Link to comment Share on other sites More sharing options...
colsoop Posted July 28, 2007 Share Posted July 28, 2007 Right i had a similar issue to this on and off for a couple of years. i have since replaced the VSV (i can't remember its name) behind the wastegate VSV and i have had no problems at all i can drop it down and it just boosts and goes. Quote Link to comment Share on other sites More sharing options...
supra_surj Posted July 28, 2007 Share Posted July 28, 2007 I read somewhere that if you just cruise in the supe ie the wife going to the shops, then no.2 wont come on line the 1st time.in other words the car 'learns' that driving style and doesnt catch you out with the 2nd turbo.dont know how true that it. Quote Link to comment Share on other sites More sharing options...
jevansio Posted July 28, 2007 Share Posted July 28, 2007 I read somewhere that if you just cruise in the supe ie the wife going to the shops, then no.2 wont come on line the 1st time.in other words the car 'learns' that driving style and doesnt catch you out with the 2nd turbo.dont know how true that it. Was that in the Daily Sport Quote Link to comment Share on other sites More sharing options...
BASHTHEBISHOP Posted July 28, 2007 Share Posted July 28, 2007 Mine occasionally does this at either 30mph cruising then plant it or 60-70 ish cruising then plant it. I just take my foot off and replant and off it goes. How expensive a job to replace the VSV casuing the problem? Quote Link to comment Share on other sites More sharing options...
hadyn Posted July 28, 2007 Author Share Posted July 28, 2007 Think you can pick up second hand VSVs for 10-20 quid on here. The main issue is finding the vsv/solenoid whatever thats finding it. I presume its a very easy DIY job... Quote Link to comment Share on other sites More sharing options...
Suprasteve Posted July 28, 2007 Share Posted July 28, 2007 Im pretty sure this issue is not autobox related Hadyn It is definitely is NOT an auto box problem as like jevansio said the 6 speed manuals also suffer the same problem. - mine does from time to time. Mainly when i'm in a high gear and change down which in turns brings the revs up above 4k (2nd turbo territory) and boot it the 2nd turbo doesn't kick in, therefore i have to let off the accelerator and back on again. Most annoying when overtaking ! sounds to me when you boot it the auto box changes down gear but brings the revs over 4k like when i do it manually therefore causing the same problem. Quote Link to comment Share on other sites More sharing options...
Mike M Posted July 28, 2007 Share Posted July 28, 2007 Right i had a similar issue to this on and off for a couple of years. i have since replaced the VSV (i can't remember its name) behind the wastegate VSV and i have had no problems at all i can drop it down and it just boosts and goes. EGCV vsv matey. Quote Link to comment Share on other sites More sharing options...
supra_surj Posted July 28, 2007 Share Posted July 28, 2007 Lol @ jevansio! Dont read d sport, i just browse the pics! Quote Link to comment Share on other sites More sharing options...
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