Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post - Running on three cylinders, no signal to #1. Need help

wurley · 01-26-2013, 07:06 PM

I have a ca18det swapped hatch, it ran good until the wiring from the previews owner started to fall apart at which point i decided to get all new wiring from wiring specialties.

So i replaced the lower and upper harness and have everything back together but coilpack #1 isn't getting the signal to fire.

I used a test light to check the coilpack harness and it was good, so what could it be? ignitor? ecu?

My ecu is thowing code 21 "Ignition signal fault"

01-26-2013, 07:06 PM	#1
wurley Zilvia Junkie Join Date: Dec 2012 Location: Wa Posts: 356 Trader Rating: (16)	Running on three cylinders, no signal to #1. Need help I have a ca18det swapped hatch, it ran good until the wiring from the previews owner started to fall apart at which point i decided to get all new wiring from wiring specialties. So i replaced the lower and upper harness and have everything back together but coilpack #1 isn't getting the signal to fire. I used a test light to check the coilpack harness and it was good, so what could it be? ignitor? ecu? My ecu is thowing code 21 "Ignition signal fault" Last edited by wurley; 01-26-2013 at 08:05 PM..