No Spark, No Fuel. Ultimate LS 70050
Just installed my new FiTech on a LS3 with a GPI SS4 cam, Did the initial setup selecting x58 and sending everything to the ECU and im not getting any spark and seem the injectors are not firing either.
Did the usual check for voltage, got 12v straight from battery on the large red harness wires and a switched 12v on the smaller key on wire(doesn't lose voltage).
RPM does have a signal while cranking so that rules out crank sensor.
Coils have 12v
On the Injectors(tested all 8) I have 12v on one of the 2 wires but on the opposite wire I read a constant 2.37v. One of these wires suppose to be a ground trigger right?
All sensors are brand new(cam, crank, map, etc) and have been tested with other known working ones to rule out failure.
No errors other than an occasional "IAC fault" that i cleared...
I tried the pre-loaded saved files on the handheld also. Any ideas?
EDIT: Forgot to mention i have both of the grounds bolted to the back of the heads with a grounding strap going to chassis also. I'm totally stumped on this.
Went back out today and checked over everything and found that I do indeed have spark, but injectors are not spraying.
Code p0340 CAM (brand new sensor)
Any update on this? I believe I'm having the same issue
Im having the same issue is there anyone out there that could help i have a car show to go to and cant get the truck running its really disappointing spend all this money and it dont work any help would be great thanks
Quote from ktowncustoms5150 on June 16, 2023, 2:12 amIm having the same issue is there anyone out there that could help i have a car show to go to and cant get the truck running its really disappointing spend all this money and it dont work any help would be great thanks
This happened to me when I first put my LS swap together and I ended up calling Fitech support and they walked me through a reflash for the ecm and then it fired right up. Good luck
ok so just have to re flash the ecm how did you do it lol was it easy im not a computer guy lol but learning slowly any chance you can give a quick low down on it it would be a huge help thank you
Call Fitech Support and have them walk you through it.
I've got fuel but no spark tried multiple sensors can't get my ls2 start at all could it be the ecu ?