Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post - Cant figure it out: Voltage drop when trying to start on AEM EMS (SR20)

2_Liter_Turbo · 03-09-2012, 08:41 PM

My new motor is having some electrical issues. S13 Redtop with AEM EMS (MAP), when running the starter, voltage drops to 9-10V area from about 13-14V when starter is not engaged. I tested the starter out of the car at a few auto parts stores (on their starter test benches), and I get about 14V @ 75amps. All grounds looks to be good, and tested all the grounds on the ECU itself. Hoping someone has ran into this before, and has some insight. Before new setup, car started on a flashed factory ECU, but did take a little work to get it to start. The AEM ECU wont start the car at 9-10V.

03-09-2012, 08:41 PM	#1
2_Liter_Turbo Zilvia Addict Join Date: Mar 2005 Location: DFW, TX Age: 41 Posts: 803 Trader Rating: (28)	Cant figure it out: Voltage drop when trying to start on AEM EMS (SR20) My new motor is having some electrical issues. S13 Redtop with AEM EMS (MAP), when running the starter, voltage drops to 9-10V area from about 13-14V when starter is not engaged. I tested the starter out of the car at a few auto parts stores (on their starter test benches), and I get about 14V @ 75amps. All grounds looks to be good, and tested all the grounds on the ECU itself. Hoping someone has ran into this before, and has some insight. Before new setup, car started on a flashed factory ECU, but did take a little work to get it to start. The AEM ECU wont start the car at 9-10V. __________________ 96 S14: Grip Track Car 90 R32: Bucket List Car 92 S13: Just for Fun Car Instagram: @SS.Maxey