I'll start by jacking it up and checking, then running new fluid through the lines, come to think of it I know the lines haven't been completely flushed in about 30,000 miles. I've bled them, but not completely flushed, and I don't know when the PO had them last flushed. Thanks guys, I hope this helps. I don't understand how old brake fluid would make the pedal spongy sometimes. Weird.
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