6. Splicing 4A-FE for Engine Swaps (e.g., 4A-FE into older Corolla/Starlet)
If a swapped 4A-FE engine cranks but fails to start, the problem often lies with the ECU not detecting the cam or crank signals. A professional advised that "the 8 wire distributor is the correct one for 4afe as it has a cam sensor (tdc1 sensor) built into it". Confirming the connection of the NE (crank) and G (cam) signals to the correct pins is the first troubleshooting step. toyota 4afe ecu pinout
The Toyota 4A-FE engine is one of the most reliable and widely produced inline-four powerplants in automotive history. Found in legends like the Corolla, Celica, and Carina from the late 1980s to the early 2000s, this 1.6-liter engine remains a favorite for budget builds, daily drivers, and custom swaps. Confirming the connection of the NE (crank) and
Features internal dual pickup coils (NE and G signals) or an integrated igniter. Features internal dual pickup coils (NE and G