Roadmaster Estate Wagon V8-350 5.7L (1993)
Idle Speed/Throttle Actuator - Electronic: Service and Repair
Idle Air Control (IAC) Reset Procedure
Reset the IAC motor by depressing accelerator slightly and starting engine. Run engine for 5 seconds then turn engine off for 10 seconds. Restart and
check for proper idle operation.
NOTE: If the IAC valve is disconnected and reconnected with the engine running, the idle speed may be wrong and will need to be reset.