dieseltwitch

I'm starting to notice that my truck (04' 5.4l) will idle very low, about 300rpms sometimes it will die. Anything thing I can check? Is it a vacuum problem, I just got done fixing my 4wd grinding issue by fixing a vacuum line, couldn't find anything else wrong.

Edit - no error code are being thrown

Spazmonkey05

With out any more info it hard to say whats going on...

It could anything I would check the Throttle body see how carboned-up.
is there any other problems?

dieseltwitch

What else can I provide?

I used a scope to look at the TB and it's not super clean but by no means clogged up.

I don't have any other problems and the truck still performs good, I have an edge programmer on it and right now it's on lvl3 - performance.

I'll be pulling this motor before the end of the year and putting in a 5.9, 24v cummins! It's fummins time!

Spazmonkey05

have you tried running it with out the programmer?

dieseltwitch

I haven't, but I've noticed it at all levels, even just the tranny tune. What I run for normal day to day driving. It just started with the dropping idling. I've had the programmer on for months

Spazmonkey05

If you give it some gas when it dropping does it come back or keep bogging?

dieseltwitch

No, come right back to life.

dieseltwitch

Also I've noticed it has died a few times when I'm turning, like pulling into a parking lot.

Spazmonkey05

ok silly question what kind of 04 f-150 heritage or "new style"

dieseltwitch

New