Re: Wierd problem? hmmmm..
Is there an idle air control (IAC) motor on that model? If so, it'll do it
when it gets dirty. It can be cleaned with throttle body cleaner. (Use
sensor safe cleaner or you may get a check engine light)
"Doug" <DZappyNOSPAM@hotmail.com> wrote in message
>I have a 99 F250 with the 5.4 w/Automatic...
> Sometimes, when I start it when the engine is cold, it'll fire up, idle
> just for a second or two and then want to die. If I stay on the gas as
> soon as it starts, I can keep it running. All of a sudden, as I'm keeping
> it running, it seems like something kicks in and the idles way up like it
> should when running normal. I can then let off the gas and it will idle
> fine. I usually have to keep on the gas until it reaches normal operating
> temp and sometimes a bit longer. No engine lights come on or anything, it
> just does that. It wont' do it all the time, just sometimes.
> It "seems" that when its really humid outside, like right after a rain, or
> in this miserable heat and humidity right now, it does it more often.
> Almost never when its dry outside, it "seems" anyway. It's done this
> since it was new, and I've had it to the dealership about this trouble,
> but they have no idea, since its warmed up when I get there and even if it
> sat overnight, there's no guarantee it would do it the next morning
> Any ideas guys and gals?