Turn the Idle Adjusting screw.
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.
on the intake
All Ford vehicles cannot adjust idle nor timing wich is pre-set at the factory and the computer sets the idle and timing, vehicles after 1990 no longer can be adjusted.
the idle tensioner and or the distributor.
Check your vacuum hose.
1990 gmc p/u 5.7 wont idle showing code 12
There is no idle screw. The idle air control valve controls the idle and can be set on different settings. You should consult a Ford dealer or mechanic for proper settings.
where is the idle control motor for a 1998 ford escort
check the idle air control valve
Idle speed control or Idle air control.
Right at the top of the engine you will find the carb immediatley to the right on the carb you will see a flat head screw this will adjust your idle , helps to have a second person on this.