My name is Scott (skofroth@hotmail.com) and I own a 91 3000gt. Used to be NA but did the turbo conversion (regretted it ever since). Trying to get it running again. Engine will run but will not idle. I have put far too much time and money into this car to just let it sit. I'm going through your checklist and got hung up real quick. Testing the PTU - with a battery, wired the negative side of battery to negative on car. Put in jumpers between 4 and 6 pins on ptu from wire harness to ptu. Touched wire from pos side of battery to pins 1,2,3 on PTU ... key in ON position.. I get nothing? What could I be doing wrong? I have replace battery, fuel pressure regulator, tested and cleaned all injectors. I've taken apart and cleaned the Idle Speed Controller, new wb O2 sensors (and tested to ensure power is going to them), I have a new(ish) computer from Cromed ECU (which converts it to OBDII), but my code reader won't recognize it. Email me or even call me. Scott (336-207-7250)