I am going to get the codes pulled at some point but this is really weird....Whenever it rains (well at least the past three times w/out fail) the mil light will come on the next day and will go off two days later...religiously....any thoughts?
Well, this isn't going to help much but it sure sounds like one of your sensors is getting wet or maybe a coil pack is not healthy (kind of like a cracked distributor cap) or a plug wire is "leaking" (arcing, really). The codes should be helpful in narrowing down where to start looking.
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