I have an 05 F150 with the 4.6 V8 engine, 700,000+ miles on the body and frame but new engine and transmission both at around 200,000 miles.

At the beginning of the year I started having issues with the truck stalling at idle or low speeds whenever it got to operating temp. No codes so really had no idea where to start. Ended up replacing a ton of stuff myself like fuel pump/filter, injectors, coil packs, purge valve, and more

Really had no idea what it was and also didn’t realize yet it was only happening at operating temp so a lot of online info led me in the wrong direction.

Things got way worse and the truck started hiccuping, misfiring, backfiring and stalling whenever I’d gas it over 2k, I ended up getting 2 codes P061b & P0320 which finally led me in the direction I needed and it ended up be the crank shaft position sensor connector. I never saw it before cause it was buried between the block and ac compressor but the connector was shattered and wiggled half way off, dirt in it and everything. Replaced the sensor and clip today and problem solved. Hopefully this can save someone the time and money I spent trying to figure this out.

 

Literally having all the same issues already spent 1,200$ on parts that i thought it was, really hoping that’s what’s wrong w mine aswell, I’ll keep you updated haven’t had my truck running for 2W now very frustrating.

 

UPDATE: your a life saver man im sure you’ll never see this considering it was years ago but i guess my sensor was just bad unbelievable man solved all my problems.