On all cars it is located on the throttle plate. That is where the air intake and throttle linkage are located.
where is egr valve on 1998 ford contour
It is located on the front valve cover under the cover that says "duratec 24v dohc"
where is the heater control valve
5w30, pick your brand. all are good
how can I clean the Idle Air Control Valve on a 1998 Nissan Frontier
it could have a bad heater water control valve. the valve is controled by engine vacuum and the vacuum line to the water valve may have a leek or be broken In addition to the above it may have a thermostat stuck open, or a clogged heater core. Drain and flush the system, replace the thermostat, and install a 50/50 mix of anti-freeze and distilled water.
The "Related Question" below is an extensive discussion on the 1999-2003 temperature control valve / heater control valve. It is likely the information will be similar to the 1997 / 1998 Windstar
You don't have a heater control valve for this truck.......
98 chevy lddle control valve
iac valve...idle air control valve
the contol valve is in the housing the input shaft is connected to the valve
How do you install a radiator in a 1998 ford contour?"