no fast idle

i have a 1999 crown victoria with no fast idle if you hold gas till it warms up it runs great and then starts ok. is it the idle control valve if so where is it thanks jim

i have a 1999 crown victoria with no fast idle if you hold gas till it warms up it runs great and then starts ok. is it the idle control valve if so where is it thanks jim

any trouble codes?

any trouble codes?
i havent taken it to garage but no engine light comes on

There is no "fast idle" on most modern vehicles.
Does your car not start well, or die immediately after starting?

More than likely the Idle Air control valve. It is located at the top, center, rear of engine. It had a hose about an inch in diameter and a wiring connection. It is held in place by 2 8mm bolts. Easily replaced.

More than likely the Idle Air control valve. It is located at the top, center, rear of engine. It had a hose about an inch in diameter and a wiring connection. It is held in place by 2 8mm bolts. Easily replaced.
Yup, very easily. When you buy the new one, you'll be able to figure out which part the old one is-LOL

More than likely the Idle Air control valve. It is located at the top, center, rear of engine. It had a hose about an inch in diameter and a wiring connection. It is held in place by 2 8mm bolts. Easily replaced.
thanks again i will replace it

Yup, very easily. When you buy the new one, you'll be able to figure out which part the old one is-LOL
thanks thats a good idea i will do that.

There is no "fast idle" on most modern vehicles.
Does your car not start well, or die immediately after starting?
then why do cars idle fast when you start them in cold weather.

then why do cars idle fast when you start them in cold weather.

I don't think ModMech was talking about the modern electrically controlled valves our modern day cars use.