that should be enough... im thinking you have a busted sensor giving a bad reading or a connector to one is loose.
they look like that and should be pretty easy to spot at the corners. i would clean their connections. be gentle, the connectors are prob brittle. i usually break 1 out of every 10 i touch. then get fancy with a zip tie.
side comment, how is the battery? i know these e53s get all pissy when the battery is weak. look up how to check the battery voltage while running and whatnot see if it's good.