Chris Wilson Posted June 9, 2015 Share Posted June 9, 2015 Just renew them all, they are ancient now, and replacing them is just part of general maintenance on a car that old. On an RX-7 you'd probably have been through 3 sets by now, so the Toyota ones aren't too bad! Quote Link to comment Share on other sites More sharing options...
jza800 Posted June 9, 2015 Author Share Posted June 9, 2015 (edited) ok, i dont now if i did something wrong or what happend.. when i did test for pressure the car was in ttc mode, so both vsv was not connectet to the pressure line, now i did mount both vsv to the lines again as stock, now i cant get any pressure on the line again.. but if i take that hose off that goes from the lines to the iacv vsv, and block it with your hands i can get pressure to the system again... does that sound right, or do i have a bad iacv vsv? or do i use the wrong line to pressure testing?? Edited June 9, 2015 by jza800 (see edit history) Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted June 9, 2015 Share Posted June 9, 2015 With EVERYTHING in the sequential setup as Toyota intended it should hold boost pressure for a while, with audible leaks. Stop messing with the TTC junk, you cannot test like that. Even if the VSV's are seemingly OK they are in need of changing on the basis of age alone, in my opinion. Quote Link to comment Share on other sites More sharing options...
jza800 Posted June 9, 2015 Author Share Posted June 9, 2015 everything is on as toyota intended.. but if i look at this on on stu http://www.97supraturbo.com/Supra%20Scans/IACV.pdf it seems to work as i should.. so if i what to test pressure, do i then have to apply 12V to the vsv before i can test that.. i now seq is a complex system, and hard to find out.. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted June 9, 2015 Share Posted June 9, 2015 Use a 2 amp fuse in the wires from the battery to the VSV, you don't want 1200 amps shorting out. Then just do as it shows. Some ports will flow air without 12V applied, some will ned 12V applied before they flow. Quote Link to comment Share on other sites More sharing options...
jza800 Posted June 10, 2015 Author Share Posted June 10, 2015 I Did find my mistake, had the wrong hose on the wrong pin on the vsv so now i can get pressure to the system. Had 20 psi before i got to bed, this morning i had 12 psi back in the system 7 houres later.. so guss that it dont have more leak than that is ok, so next is vsv check Quote Link to comment Share on other sites More sharing options...
jza800 Posted June 10, 2015 Author Share Posted June 10, 2015 and now it all works again. did check all vsv, all within spec and working ordre execcpt on.. had another on laying around... put everthing back, and now it boost as it should.. 0.6 bar on the first, and 0.8 - 0.9 on the second.. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted June 10, 2015 Share Posted June 10, 2015 Just put a set of new ones on, for God's sake Quote Link to comment Share on other sites More sharing options...
jza800 Posted June 10, 2015 Author Share Posted June 10, 2015 i will drive it this summer out. what is about 3 month. so when i park it for the winter, i will change all vsv and coil packs Quote Link to comment Share on other sites More sharing options...
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