bozz911

Hello I hope someone here can help my with my current issue. I have a 1990 z32 na I have no spark. Fuel is fine. I replaced the cas and ptu but still no spark. I have check continuity on all pig tails from the ptu and cas to the ecu harness and all good. I checked the grounds on the bock and body and all grounded good. I am not getting a ground on ecu pin 16. I am getting 12 volts and ground on all coil plug pig tail. The only code im getting on the ecu is 11 but the circuit test out fine. I have a 1993 z32 2+2 and swapped ecu just to see and still same issue. I am at a loss on why its not firing. I have troubleshot with the service manual and everything seems to check out. I am missing something and hope someone here can assist me.

bozz911

I have checked the cas and i am not getting a signal from the cas. I think concept z sent me a bad cas

bozz911

cas is not sending signal to ecu...sending it back to get a new one..will update

bozz911

I sent the cas back yesterday. I hope the new one works. I already changed out to the newer pig tail..I noticed that when I grounded the housing of the cas it sounded like the injectors or something clicked...Wonder if that is because the cas is bad and is grounding out...not sure will update

bozz911

I got my CAS back and still no fire or spark...the cas is working when turning i hear the injectors but only when I ground the cas housing to the engine but still no spark