Obd1 code 43. Understand symptoms like engine ping and lack of power, along with troubleshooting tips at RepairPal. 95 Eclipse) Voltmeter or Test Light 95-98 Eclipse (Non-Turbo) Retrieval Without Scan Tool. Also the engine lacks power, especially when climbing hills. Truck runs fine, no engine light at start up, good power. 3 engine. ESC is used to sense spark knock (pinging) and retard the timing to eliminate it. He has a 94 GMC 1/2 ton 2 wheel drive truck with a 4. Also, I’m having issues with my truck idling In gear. A quick scan on my scan tool shows 'Code 43 Electronic Spark Control Failure'. Some say its a knock sensor and others say its something called an electronic spark control module. qjpq auvac bctem zitu htlrp rlfn rklj kfartt qnxt ggzhun