Where is the idle screw on a 1993 Dodge Spirit?

the base idel screw in on the bottom of the throttle body.. there should be a cap over it

While there is a screw, it is more properly an idle stop screw, more than an idle adjustment screw; since the idle is controlled electronically by the SMEC (Single Module Engine Control) through the AIC (or AIS) valve mounted on the Throttle body. The screw that our friend refers to, is used in the factory to crack open the butterfly or throttle plate, but it should not be further adjusted. Instead, find the cause why Idle is not between 700-900 RPM. Possible causes are a dirty AIC valve, or an sticking one; or a wiring intermittent contact at the AIC valve connector; or a cracked insulation on the engine speed sensor, or even a failing throttle position sensor. Amclaussen.