Yamonda Posted July 22, 2020 Share Posted July 22, 2020 Hi all, I'm having a misfire issue with my G6ET. It has a random misfire sometimes on cyl 1 or 3 (unplugging coil packs to find dead cylinder). It'll drive and not misfire at all them all of a sudden complete drop a cylinder dead. Does this for a couple seconds upto around a minute then comes good again. Does this pretty much everyday at random times, seems worse when hot but will do it cold as well. I've put a few different coil packs in/swapping them around, and a fresh set of plug in. It came good for a couple days but then back to been weird again. there is a code for Coil circuit A malfunction. I'm starting to think maybe the ECU has failing coil drivers Anyone had this issue? Thanks Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted July 25, 2020 Share Posted July 25, 2020 Sounds like moisture in the coil cover or the coil drivers. Could be wiring as well if the engine has ever been out and you've accidentally crushed some cables. Quote Link to comment Share on other sites More sharing options...
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