S.Violette Posted September 10, 2023 Report Share Posted September 10, 2023 I have run manual ignition fire on all cylinders of 95 BMW M3 using link software. Ignition coil 2 will not fire. Swapped coils from cylinder 1 and 2. both coils work on cylinder 1. checked continuity from wiring harness to plug- good for all 3 wires. How do you know if ECM is sending trigger signal to coil? I have a voltage meter but, not an oscilloscope. Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 10, 2023 Report Share Posted September 10, 2023 Is it an E36 plug-in ECU or a wire-in? Is it a new install or was it previously working and now isn't? Quote Link to comment Share on other sites More sharing options...
S.Violette Posted September 11, 2023 Author Report Share Posted September 11, 2023 e36 plug in. running before no issue. rebuilt engine for turbo and started up new engine. cylinder 2 did not fire. misfire. rough idle. ran manual ignition test. Just plugged in my old ECU computer with RK tunes. cylinder 2 worked. so…… looks like the link ecu is bad. need replacement. triple checked wiring and coils. all coils fire except circuit for cylinder 2. plug to coil is getting correct voltage but, trigger circuit is not working. I can send pictures and/or video if needed. just ask for what you want to see. Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 11, 2023 Report Share Posted September 11, 2023 Contact [email protected] to arrange to get it back for inspection. Quote Link to comment Share on other sites More sharing options...
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