Hello, I have a 04 f150 and it is running lean, and dying at stop signs. I cleaned the Mass air flow sensor and would like to do the same to the throttle position sensor. Heres the problem I am not sure where it is located. I did a search on the topic but could find no pictures as to where it is locate d in the truck. Any help would be great.

 

The TPS isn't your problem, you need to clean the throttle plate itself. There's likely carbon built up on the engine side that's restricting airflow at idle causing it to stall.

 

How many miles on it and have the plugs been changed?

 

Clean your IAC (Idle Air Control) valve, it's on the side of the throttle body, and is more than likely your culprit. Take it off and use throttle body cleaner.

 

There's no IAC used on the '04-'08 models.

 

mine was doing the same thing acouple of months ago. all i did was clean the throttle body and changed my fuel filter and its been fine since. good luck!