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cynabel · 10-22-2018, 08:46 PM

Hello all. I have what I hope are not silly questions (know very little about these engines/cars) Helping my son to troubleshoot. He swapped his ECU for a Power FC. It ran great for a couple of weeks, then lost spark. I've read a ton about no spark situations and checked everything people recommended. All looks good except when checking pins on the ECU, several pins, including the ECU ground, have good ground, but also 8 volts?!? Might that cause no spark and/or messed up the ECU?? Also, backup power (pin 46) shows 12+ volts (not constant), but ECU power(pin 47) shows nothing?!? Could that keep the ECU from "saving" information? Thanks for your help. (Nevermind, I think I posted in the wrong area. I'll repost in Engine Tech).

10-22-2018, 08:46 PM	#22281
cynabel Join Date: Oct 2018 Location: Oregon Age: 67 Posts: 4 Trader Rating: (0)	240sx with sr20det no spark Hello all. I have what I hope are not silly questions (know very little about these engines/cars) Helping my son to troubleshoot. He swapped his ECU for a Power FC. It ran great for a couple of weeks, then lost spark. I've read a ton about no spark situations and checked everything people recommended. All looks good except when checking pins on the ECU, several pins, including the ECU ground, have good ground, but also 8 volts?!? Might that cause no spark and/or messed up the ECU?? Also, backup power (pin 46) shows 12+ volts (not constant), but ECU power(pin 47) shows nothing?!? Could that keep the ECU from "saving" information? Thanks for your help. (Nevermind, I think I posted in the wrong area. I'll repost in Engine Tech). Last edited by cynabel; 10-22-2018 at 09:58 PM.. Reason: Wrong place I think.