EL Camino V6-229 3.8L (1982)
Plunger - Maximum Adjustment
16. Recheck ISC "Maximum Authority" RPM with voltage applied to Motor (Step 13). Motor will ratchet at full extension with power applied.
17. After adjustment of ISC plunger, measure distance from back side of plunger head to ISC nose piece, Dimension "B". Dimension must NOT
exceed that shown by plunger type as either identified by plunger length or letter identification.
18. Fully retract ISC Plunger (Step 8). Place transmission in PARK (AUTO Trans.) or NEUTRAL (MANUAL Transmission) and turn ignition "Off".
Disconnect 12 Volt Power source, Ground lead, Tachometer and Dwell Meter. With ignition "Off" reconnect four Terminal Harness connectors to
ISC Motor.
19. "TRICKING" the ISC motor as described will cause the "CHECK ENGINE" light to come on and an ISC motor trouble code to be set. By
restoring the system to normal operation, the light will go out, but the trouble code will continue to be stored as an "INTERMITTENT" problem.
In this case, it will be necessary to clear the diagnostic trouble codes by removing the ECM fuse from the fuse block for about 10 seconds.
