stevefh Posted January 14 Report Share Posted January 14 Hi all, bought 2 of these coils less than 1000 miles ago but more than a year, so no guarantee. I think one of them is not working properly. The coils are off the car. With a multimeter how do I measure a) the secondary resistance ,should be 7.8 K ohms and b) the primary resistance should be 0.35 of 1 ohms ,is there a meter out there that measures this low value accurately? These coils are round ,the latest 8224 coils are square, will one of each fit on the S4 ignition module? I am assuming the specifications are the same.Thanks for any help. Quote Link to comment Share on other sites More sharing options...
Gold FFM Barrykearley Posted January 14 Gold FFM Report Share Posted January 14 Yes a low impedance meter would indeed measure that. Quote Only here once Link to comment Share on other sites More sharing options...
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