MAF spray cleaner. That's probably not it though.
For intermittent problems like this I like for people to go with a tune-up first. Sometimes that solves the problem. Since your first issue was caused during a rain, you might be looking at a cracked coil. Bad coils will cause HO2S codes like "running rich".
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Moderating everything now, let me know if I can help.
Originally Posted by the user formerly known as ZX3_Chick
You're special aren't you.