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...then tapped on the ECM. CEL came on, went to "Start" and it started right up...


Perhaps this suggests a bad connection or bad earth or a dry joint in, on or near the ECM?


Aussie 1997 3.2V6 SOHC 6VD1 Holden Jackaroo SE (Isuzu Trooper/Bighorn/Monterey) 5-speed manual, rear LSD, front Lokka (manual free-wheel hubs).