Hey everyone. Ive got an 05 F150 with the 5.4L. As of late when im in reverse at very low speeds the RPMs are very low and then the engine dies. I put new plugs and COP boots in a few weeks ago, as well as a new fuel filter. No misfires, no codes. Can anyone help?
-Thank you

 

Wow, I'm having the exact same issue with my 4.6. In reverse the RPM will go so low that the power steering doesn't work and in the drive thru the other night it died. I'm going to have a look at and clean the throttle body.

 

Jp2085 good luck finding the problem with your 4.6. My dads is doing the same thing. It dies when he turns. I've done everything to it and can't find the problem.

 

Yeah that's pretty much what mine is doing. It started a few nights ago while I was doing about 30 in the city and it felt like I let off the throttle and got back on real quick.

 

i have an 04 fx4 5.4l and it idles very low when stopped at red lights etc.. did cleaning the throttle body help at all?

 

Haven't had a chance to look at it yet but since the last time it died two weeks ago it hasn't done it since.