Could be in need of a tune up.
IAC (Idel Air Control Valve)
It may be because the idling unit is broken.
could be lots of things but have you changed you fuel filter lately?
In a 2000 Ford Focus SE : That would be the 2.0 liter , Single Over Head Cam ( SPI ) four cylinder engine
I have a 2000 Ford Focus it uses Mercon V. Mercon V is what I use in my 2000 Focus with a standard transmission. I have an Automatic 2000 Ford Focus station wagon and the owners manual suggests Mercon V.
You don't. It's all done by computer.
Program a new key and ignition to a 2000 ford focus
how to remove hub assbley from car 2000 ford focus
That would be the sound of your mother-in-law.
Where is the temp sensor on 2000 ford focus zetec engine
Because your oil pump and/or oil pump bearings are dying.
It sounds very much lke you have a leaking vacuum hose. Either it has deteriorated and needs replacing or it has come off its fitting. Carefully check the engine compartment in an effort to locate the source of the hissing sound. When you do repair or replace the hose you will probably cure the source of your idling (and hihssing) problem(s).
Indecision 2000 Focus on New Hampshire - 2000 TV SUSPENDED was released on: USA: 2 February 2000
replace the cam sensor
Yes. this model Focus had many problems. I would not recommend this model year. The 2002 and up are fine cars.
It's actually in the trunk! You might not believe it but my nephew acually has a 2000 ford focus!
There must be a restriction within the intake. Snow? ice? Mark
It MIGHT be that the fuel filter needs replacement. Accumulated sediment in the filter might restrict the flow of fuel demanded by higher speed.
It may be a EGR valve issue. This valve is normally closed at idle and opens at about 40mph.
do I have to lower the engine to replace the water pump ona 2000 ford focus zetec engine