Hey I just bought and replaced all my cam and crank sensors and I知 still getting a struggling start with a rough idle. With the code PO345... I知 stumped... I did hear that if your serpentine belts are really worn they can cause one of the cam sensors to throw a code... is this common or true? It痴 the only code popping up and I just bought brand new sensors I don稚 know what to do!!