Grounding is always the first thing I check. In fact, I'll go as far as loosen and retighten the grounds in the engine compartment. I don't care where the car is from, any time a metal gets wet, corrosion is suspect. It doesn't take much chemical contact to start the corrosion, and it will be where you cannot see it. (Inbetween grounding washers)

I also firmly believe that a good majority of repairs (r/r fuel pump, or this valve/sensor) actually get fixed by disturbing the electrical connection, until it happens again and the owner things it's a lemon,,,

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Closing the store
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