2000 Ford Explorer, 5.0L, 160k miles This is my brother's truck, and it won't crank. It was behaving a bit erratically a couple of times. One time, it wouldn't turn over or anything, then a few minutes later cranked right up. He cleaned/tightened the battery connectors, for good measure. After driving it a few days, it has stopped running. The engine turns over fine, with good power. However, it won't run. When he turns the key on, I can't hear the fuel pump running at all, and I don't hear anything under the hood. He had just filled the gas tank. What all stands between the key and the fuel pump, which I should check/eliminate before pulling the (full) gas tank out? The 20A fuse is good, and I switched the relay with another one of the same part number. Are there any other switches, relays, or sensors which could have it shut down? The engine light was NOT on. As always, thanks for your help!