I was taking a drive in the mountains the other day and suddenly my gas pedal was gone! After pulling over, I found that it had flipped up from it's usual position and stayed there. I can still drive but every time I take my foot off, it flips back up again. I haven't called my mechanic yet but I was wondering if this is an easy fix or whether I need to take it in. Thanks.

 

If I don't hold my foot on the gas pedal, it flips up and stays up. It's almost like there is some tensioner or spring that is broken that should hold it in place. I can't see anything obvious.