Mugello Posted May 6, 2012 Share Posted May 6, 2012 GOD I HOPE SO lol Same !! Quote Link to comment Share on other sites More sharing options...
Hellstrom Posted May 6, 2012 Share Posted May 6, 2012 If after a drive you pull the hoose that goes between black hardpipe rail to the iacv vsv it should bleed out stored Air from the pressure tank if not i suggest checking the lines on the back of the hard pipes that lead to the pressure tank before you remove the intake. Quote Link to comment Share on other sites More sharing options...
Hellstrom Posted May 6, 2012 Share Posted May 6, 2012 It dont matter if its in TTC or seq mode as the pressure is stored in the tank and the vsv is suposed to block that pressure until it gets the signal from the ECU 3800rpm. If in TTC mode it Will be stored from the hardpipe and directly to the acutator Quote Link to comment Share on other sites More sharing options...
Mugello Posted May 6, 2012 Share Posted May 6, 2012 I understand I will check this tomorrow morning, but im 99% sure there was no pressure in that hose when i removed it to put new hoses on ! Quote Link to comment Share on other sites More sharing options...
Hellstrom Posted May 6, 2012 Share Posted May 6, 2012 The pressure tank might leak abit or a hose is leaking. If you waited hours before you pulled the hoose the is no guaranty that the system Will keep pressure for that long. A tiny leak wont affect it to make it stop working. A faulty tank or a Big leak would. Good luck! Quote Link to comment Share on other sites More sharing options...
mplavery Posted May 6, 2012 Author Share Posted May 6, 2012 (edited) I understand I will check this tomorrow morning, but im 99% sure there was no pressure in that hose when i removed it to put new hoses on ! Thank you HELLSTROM, I'm sure mine had no pressure too...was hoping I would not have to get to those pipes at the back as there a real pain in my ass hole Edited May 6, 2012 by mplavery (see edit history) Quote Link to comment Share on other sites More sharing options...
Mugello Posted May 6, 2012 Share Posted May 6, 2012 The pressure tank might leak abit or a hose is leaking. If you waited hours before you pulled the hoose the is no guaranty that the system Will keep pressure for that long. A tiny leak wont affect it to make it stop working. A faulty tank or a Big leak would. Good luck! I see, investigation starts tomorrow Thank you Mugello, I'm sure mine had no pressure too...was hoping I would not have to get to those pipes at the back as there a real pain in my ass hole Indeed !! Same here !! Quote Link to comment Share on other sites More sharing options...
TubbyTwo Posted May 6, 2012 Share Posted May 6, 2012 big old list to try tomorrow!! Quote Link to comment Share on other sites More sharing options...
Mugello Posted May 6, 2012 Share Posted May 6, 2012 (edited) Just found this picture of the lines from the pressure tank to the vsv's.... Round the back of the engine should be fun to get at them Edited May 6, 2012 by Mugello (see edit history) Quote Link to comment Share on other sites More sharing options...
Hellstrom Posted May 6, 2012 Share Posted May 6, 2012 They are indeed a huge PITA to get to especially to get em off the hardpipe. Its possible but prepare to get agressive Good luck though Quote Link to comment Share on other sites More sharing options...
mplavery Posted May 6, 2012 Author Share Posted May 6, 2012 Just found this picture of the lines from the pressure tank to the vsv's.... Round the back of the engine should be fun to get at them http://97supraturbo.com/Seq%20FAQ/Pressure%20Tank%20Rear.jpg Good pic, nice find Post your pics up guys of the of the problems you have found on your cars ! Will help other too Quote Link to comment Share on other sites More sharing options...
Mugello Posted May 6, 2012 Share Posted May 6, 2012 Im hoping my problem lays on the inlet side, as the turbo side looks like it will be a massive PITA!! Thanks for all your help btw Quote Link to comment Share on other sites More sharing options...
Mugello Posted May 6, 2012 Share Posted May 6, 2012 Good pic, nice find Post your pics up guys of the of the problems you have found on your cars ! Will help other too Will do, hoping its a tired, old, split hose. Quote Link to comment Share on other sites More sharing options...
mplavery Posted May 6, 2012 Author Share Posted May 6, 2012 Will do, hoping its a tired, old, split hose. I have been told its a common place for them to go ... Like I said I had a quick look and could not find anything with a dentist mirror thingy but I'm going to have to have a proper look now as that's all that's left ! Quote Link to comment Share on other sites More sharing options...
Mugello Posted May 6, 2012 Share Posted May 6, 2012 Same, all other hoses are new! How hard was it to get too when you looked first time? Quote Link to comment Share on other sites More sharing options...
TheTurtleshead Posted May 6, 2012 Share Posted May 6, 2012 I haven't read all of this thread, but mine did this. It turned out that the VSV that opens the valve in the outlet from the 2nd turbo(It sits on top of the boost pipes at the back) had died completely, meaning the flap didn't open and I had no boost on the 2nd turbo. Something to check Quote Link to comment Share on other sites More sharing options...
Mugello Posted May 6, 2012 Share Posted May 6, 2012 I haven't read all of this thread, but mine did this. It turned out that the VSV that opens the valve in the outlet from the 2nd turbo(It sits on top of the boost pipes at the back) had died completely, meaning the flap didn't open and I had no boost on the 2nd turbo. Something to check Best way to check this? Thanks. Quote Link to comment Share on other sites More sharing options...
mplavery Posted May 6, 2012 Author Share Posted May 6, 2012 (edited) I haven't read all of this thread, but mine did this. It turned out that the VSV that opens the valve in the outlet from the 2nd turbo(It sits on top of the boost pipes at the back) had died completely, meaning the flap didn't open and I had no boost on the 2nd turbo. Something to check You talking the actuator here mate The only way I know to check it is by pushing the bar down in which it moves fine If your talking about the IACV VSV, I bypassed that by doing the TTC mod + I can't here any pressure when I take the hose off so I'm hoping there is a split pit going up the the pressure tank Edited May 6, 2012 by mplavery (see edit history) Quote Link to comment Share on other sites More sharing options...
TheTurtleshead Posted May 6, 2012 Share Posted May 6, 2012 Best way to check this? Thanks. Bypass the VSV completely. Put the Actuator that the VSV operates straight onto the hard metal vacuum line which normally gives boost to the intake side of the vsv This will put you in a sort of semi TTC Mode. Take it for 2-3 pulls and see what happens. If you still have problems, bypass the vsv that controls the flap in the exhaust as well, (located underneath the first turbo, NOT your boost solenoid!) Then try again. In the end my pressure tank died as well, so I just went TTC Are you getting second turbo if you come off the throttle and go back on it when your sitting there with just the first turbo spinning away? EDIT: You replied before I typed this! Quote Link to comment Share on other sites More sharing options...
TheTurtleshead Posted May 6, 2012 Share Posted May 6, 2012 If you put pressure directly to the VSV's, with either your mouth or a handheld vacuum tester, do they operate properly and smoothly? Quote Link to comment Share on other sites More sharing options...
Hellstrom Posted May 6, 2012 Share Posted May 6, 2012 Lol guys did you read what i have said he talks about the vsv the little valve that controls that acutator. This is how it works Inside the vsv there is a flap mechanics there are 2 joints on the vsv 1 is the feed from the black hardpipe assembly and 1 goes to the iacv acutator. When at 3800 engine sends signal to the vsv to open, and the flap Inside the vsv open and allows Air to pass on to the acutator it self making it open another flap Inside the big boost feed cast alu pipe to Let the Boost generated by turbo number 2 join the stream with turbo one. However when putting it in TTC mode you exclude that vsv complete. The acutator Will open all the time unless there is a bad leak from the pressure tank. I think there is a how to check the vsv function in the tsrm about the vsv. Adding ground and 12v Will open the vsv. Quote Link to comment Share on other sites More sharing options...
TheTurtleshead Posted May 6, 2012 Share Posted May 6, 2012 Mugello, just noticed you're in cambridgeshire. Whereabouts are you? I'm more than happy to take a look at it at some point if you want? Quote Link to comment Share on other sites More sharing options...
mplavery Posted May 6, 2012 Author Share Posted May 6, 2012 (edited) Lol guys did you read what i have said he talks about the vsv the little valve that controls that acutator. This is how it works Inside the vsv there is a flap mechanics there are 2 joints on the vsv 1 is the feed from the black hardpipe assembly and 1 goes to the iacv acutator. When at 3800 engine sends signal to the vsv to open, and the flap Inside the vsv open and allows Air to pass on to the acutator it self making it open another flap Inside the big boost feed cast alu pipe to Let the Boost generated by turbo number 2 join the stream with turbo one. However when putting it in TTC mode you exclude that vsv complete. The acutator Will open all the time unless there is a bad leak from the pressure tank. I think there is a how to check the vsv function in the tsrm about the vsv. Adding ground and 12v Will open the vsv. Yes I understand mate As you were saying, it seems that I have no pressure so I will be checking the pipes to the pressure tank in the morning If the weather holds out that is Edited May 6, 2012 by mplavery (see edit history) Quote Link to comment Share on other sites More sharing options...
Mugello Posted May 6, 2012 Share Posted May 6, 2012 Mugello, just noticed you're in cambridgeshire. Whereabouts are you? I'm more than happy to take a look at it at some point if you want? Yes im around the march town area :-) i will check the pipes from the pressure tank tomorrow along with a couple other bits and hopefully that will sort it. Failing that i will take you up on that offer Quote Link to comment Share on other sites More sharing options...
TubbyTwo Posted May 7, 2012 Share Posted May 7, 2012 i have just been out and stripped down the intake side. replaced all the vacuum hoses that were originals. some looking very perished, replaced all the vacuum hoses i could see to vsv etc. took the intake off and followed the 2 vac lines to the valve that controls 2nd turbo. where they joined the valve both were split. gonna put back together and go for a run. 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.