Idle problems P0455
 

Need question answered!
2005 F250 V10 engine code P0455 could this cause idle problems at start up. The truck when it starts has a low idle then comes back up then goes back down. It also dies sometimes when in a parking lot.


It also is missing the metal tab in filler next which I know is the reason it is putting out the code. Just wondering if this also affects idle?