M20 starts and dies a second later

[Oldschoolvert]

My m20b25 just started having this problem where after you disconnect the battery and reconnect it, it wont stay running. When started it dies instantly and the injectors continue to click until the key is turned of and back on again. Never seen this happen before. Itll fire every time. It happened once before but after a while it started and stayed running. its been 2 days now with the same constant problem. Please help me i have a track day in less than a week. Thank you

[wodcutr]

Try throwing in another ECU and see if that fixes the issue. The injectors should not fire unless the motor is turning and it is getting a signal from the CPS.