2000 limited will not stay idleing

[01limited]

My 2000 won't start with out pushing the gas pedel in and then won't idle if I take my foot off. So I have to have my foot on pedel for it to stay running. If when starting it I don't press the gas pedel it just cranks and never starts. What is wrong here? I have not done anything to the engine besides a K&N FIPK2.
Thanks
Dylan

 

[headrush]

Disregard this post...I'm an idiot.

 

[TPLYNCH]

Clean the IAC. Throttle Position Sensor (TPS) may also be bad. Throttle cable may have stretched too.

 

[lriggnoht]

If it idles better after it warms up AND you have the SOHC 6 popper, more likely than not, the lower intake mainfold gasket (o-rings) are bad. You'll need the upper intake manifold gaskets (o-rings) also and about 4 hours to fix it assuming you are: 1)mechanically inclined and 2)doing it yourself. The parts are less than $25 from Ford.