I've seen threads stating that the solution is a fuel pump relay and i've seen threads that say it is a crankshaft position sensor, I'm not sure what may indicate one or the other is the correct one? I'd like to shell out the money for both and replace both, but I'd hate to waste it. The part number I've found for the fuel pump relay is 5099007AA, but I don't have the crankshaft sensor part number.