I have a 2010 f150 fx4 and when ever I let it idle for a few minutes the DTE and Fuel gauge gets all messed up. If I have say 150 miles to empty and let it idle it can go up to 250 or down to 19 and it doesn't reset when u shut it off or if I drive all day... I've had the sending unit replaced twice by the dealer under warranty but it's driving me insane! I've ran out of gas twice as well.... Any advice?