Hi I’m have a issue with my 2003 G35 sedan Manuel
recently got tuned by admin needed to change clock spring to go threw maps after changing clock spring I have a issue right now car cranks but no start I don’t hear fuel pump my CEL isn’t showing up on dash no communication threw OBD port Fans stay on speedometer not working while driving car was running and driving perfectly fine before changing clock spring and cruise control buttons still don’t work don’t know if car is in anti theft map because buttons arnt working need help figuring this out if anyone has a idea my tuner said it’s my immobilizer have a key guy coming out tomorrow but if that’s not the issue idk what could be the issue

 

Did you ever figure out, I’m in the same boat.

 

What exactly do you have going on? We can completely bypass the immobilizer (NATS) with an Uprev reflash

 

my dash wiring harness was fried and I had Rod knock so I bought a new engine and had it put in and it wouldn’t start up so I went and grabbed a new harness, same part number and put it in and it was starting it would backfire and then die out they change the coil packs and the throttle body and I went and grabbed a new ECU because they said mine had corrosion but now the OBD is not getting any power. I took my fuel pump out and tested it. With power directly to it and it’s fine, but I don’t hear it purging when I turn the ignition key. The fans turn on when the car is on and all it does is crank and not start, but I don’t see the flashing red light.” the security system light.” I tested all my fuses. They are all getting power. I took apart my ECU and tested it, and it’s receiving power on all pins on the motherboard.

 

You can't just plug in a new ecu without either flashing it with uprev to bypass nats or getting it programmed to the keys by the dealership.

There may be multiple things going on but that's one of them.

Feel free to email/ pm me anytime