Dwayne Oxford Posted June 3, 2020 Share Posted June 3, 2020 These keep failing fast, thinking on trying to buy from Subaru. Saw this old post about coil incompatibility, wondering if could be why these fail so fast? Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted June 3, 2020 Share Posted June 3, 2020 (edited) What is your secondary ignition voltage? A lab scope trace of the secondary ignition waveform would be a good place to start. Ignition modules die from heat. This is due high resistance in the secondary ignition, overly long dwell times, or improper cooling. GD Edited June 3, 2020 by GeneralDisorder Quote Link to comment Share on other sites More sharing options...
Dwayne Oxford Posted June 5, 2020 Author Share Posted June 5, 2020 Have nothing to check secondary voltage. Spoke with Wells(WVE) tech yesterday who said that the primary resistance is what kills modules. How does the secondary kill them? The '82 FSM specifies Hitachi coil CIT-79, primary resistance 1.04-1.27 OHMs, secondary 7,360-11,040. Their replacement coil is WVE 5C1138 https://www.rockauto.com/en/moreinfo.php?pk=937080&cc=1268311&jsn=356 One I'm running is 1.4, 14,080 Have 2 loose, 1.4, 9,690 and 1.2, 13,520 Quote Link to comment Share on other sites More sharing options...
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