There should be one cam sensor for ignition timing. There may be two other sensors if that engine is equipped with variable valve timing which became standard in 07 but? It's possible yours has it. Those would be at the front of the engine on each side at the ends of the intake camshaft locations, items 3/4 in the picture.
Is the check engine light on? The description doesn't sound like a sensor issue. It sounds more like the IPDM (smart fuse panel) is failing. You might want to try re-seating all the connectors on it. Disconnect the battery. Then release the two clips that hold it in place, remove and re-seat all the connectors. Re-connect the battery and see if things are better.
Images (Click to enlarge)
Wednesday, April 19th, 2017 AT 4:35 PM