Idle Speed with Idle Load Compensator (ilc) Cadillac Brougham I

1. Place transmission in Park, set parking brake, and block wheels. Remove air cleaner and plug hose to Thermal Vacuum Valve (TVV). Disconnect and plug hoses to EGR, canister purge port, and Idle Load Compensator (ILC). Engine must be at normal operating temperature. Ensure that at least 10 in. Hg. vacuum is available to ILC with engine at idle.
2. Back out throttle stop screw 3 turns. With engine running and transmission selector in Drive, adjust plunger to extended RPM. Hold jam nut on plunger to avoid damaging ILC. See «IDLE LOAD COMPENSATOR ADJUSTMENT»(ref-92294-S29037483022001033000000) table. Apply vacuum to ILC to retract plunger. Set throttle stop screw to obtain retracted idle RPM.
3. Measure distance from jam nut to tip of plunger. (Scheme 4) Measurement must not exceed 1" (25.4 mm). If measurement exceeds 1" (25.4 mm), check for a low idle condition.
4. Reconnect engine vacuum to ILC and observe idle speed. Idle speed should match retracted RPM. If idle speed is correct, no further adjustment of ILC is necessary. If not, proceed to next step.
5. Turn engine off and remove ILC. Remove rubber cap from center outlet tube and then remove metal plug (if equipped) from tube. NOTE: It is not necessary to remove ILC if Allen wrench is modified to clear obstructions.
6. Insert.090" (3/32") hex key wrench through center outlet to engage adjusting screw inside tube. One complete turn clockwise of screw will increase idle speed about 75-100 RPM. One complete turn counterclockwise will decrease idle speed by the same.
7. Recheck idle speed with transmission in Drive and closed loop mode. Turn engine off and disconnect power feed to ECM for 10 seconds. This allows ECM to reset TPS value.

IDLE LOAD COMPENSATOR ADJUSTMENT (RPM) - 5.0L (VIN Y)

Scheme 4