This is actually on a 99 VW bug. Lately, in rainy conditions, the car misses for a while until warmed up. Plugs and wires were replaced within the past two years, so I'm thinking the coil is on its way out. It's pushing the CEL, but the code only points to misfiring. Also, is there a way to test the wires, too? I do have a multimeter. Thanks!

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1989 300E 144K