go to autozone.com
doesnt have one
There is no heater control valve fitted on a Ford Escort. The heater matrix is directly connected to the engine's cooling system. To reach the heater matrix, you should remove all the facia unfortunately... :(
This is the escort forum not the ford taurus.
Have you tried replacing the PCV valve?
yes
There is a heater control valve on the 1999 Ford Ranger. There is no thermal vacuum valve on this year of the vehicle.
computer control
Because the IAC valve is faulty.
The idle air control valve on a 1990 Ford Escort is located on the intake manifold. An idle air control valves function is to control the amount of air that is allowed to enter the engine so the idle can stabilize.
Evaporative Emission Control System control valve malfunction. You need a new evap control surge solenoid valve.
Call the parts department at the Ford Dealer.
On my '93 ford escort 1.9L, it is located under the dash, behind the heater control assembly.