- Warm engine to normal operating temperature. Turn A/C and all accessories off. Enter diagnostics by placing the cruise control ON/OFF switch in the ON position and pushing the "OFF" and "WARMER" buttons on the climate control panel. Check for any trouble codes. See appropriate SELF-DIAGNOSTICS article in this section for trouble code definitions and diagnostics.
- Check and adjust engine timing. Cooling fan must not be running during adjustments. Place steering wheel in straight ahead position and transmission selector in Park. Disable the alternator by grounding the Green "test" connector, near the alternator. The "NO CHARGE" light should come on.
- Select ECM "ISC MOTOR" override E.5.3 by pressing the "HI" button. When display shows E.9.5, press "ECON" and "WARMER" buttons simultaneously. Retract ISC by pressing the "COOLER" button on climate control panel. Wait a minimum of 20 seconds for ISC plunger to retract.
- ISC plunger should now be retracted. If plunger still contacts throttle lever, turn plunger in, so it is not touching. With ISC plunger fully retracted and not touching throttle lever, check minimum idle speed RPM. See «MINIMUM IDLE SPEED»(ref-10116-S38751948912000110900000) table. If idle speed is incorrect, adjust idle speed stop screw. Proceed to «THROTTLE POSITION SENSOR (TPS)»(ref-10116-S28985434242000110900000) in this article to check and adjust TPS if necessary. Once TPS is adjusted, perform «MAXIMUM ISC EXTENSION (DEVILLE & FLEETWOOD)»(ref-10116-S20661378802000110900000) in this article.
Home/Buick/Estate Wagon/Buick Estate Wagon (1990-1990)/Repair manual/Adjustments/Minimum Idle (deville & Fleetwood)
Contents
Section: Adjustments- Introduction
- Engine Compression
- Valve Clearance
- Ignition Timing
- 4.5l (VIN 3)
- 5.0l (VIN Y)
- 5.0l (VIN E & F) & 5.7l (VIN 7 & 8)
- Idle Speed & Mixture
- V8 Idle Speed (carbureted)
- Idle Speed with Idle Load Compensator (ilc)
- Minimum Idle (deville & Fleetwood)
- Minimum Idle (eldorado & Seville)
- Maximum Isc Extension (deville & Fleetwood)
- Maximum Isc Extension (eldorado & Seville)
- Idle Mixture
- Throttle Position Sensor (TPS)
- Throttle Position Sensor (TPS) - 5.0l (carbureted)
- Throttle Position Sensor (TPS) - 4.5l (deville & Fleetwood)
- Throttle Position Sensor (TPS) - 4.5l (eldorado & Seville)
- Throttle Position Sensor (TPS) - 5.0l & 5.7l (VIN E, F, 7 & 8)
- Abbreviations
- Accessory Drive Belts
- Adjustments
- Antenna Systems
- Application
- Automatic HVAC System
- Automatic Trans
- Auxiliary Emission Control Systems
- Basic Trouble Shooting
- Brakes
- Charging System
- Check Lists
- Computer Relearn
- Cooling Fan
- Cooling System (mechanical)
- Cruise Control Systems
- Diagnosis - Torque Converter Clutch
- Diagnostic Connector Locations
- Differentials & Drive Axles
- Door Locks & Anti-Theft Systems
- Driveline/axles
- Driveshaft & Universal Joints
- Electrical Component Locations
- Electronic Suspension
- Emission Applications
- Engine
- Engine Controls - System/component Tests
- Engine Controls - Tests W/codes - Carbureted
- Engine Performance
- Fuses & Circuit Breakers
- Gauges & Instrument Panels
- General Servicing - All Makes
- Headlights
- Heated Glass/defoggers
- Heater
- Identification
- Manual & Power Steering
- Manual HVAC System
- MAP Guidelines
- Mechanical
- Mechanical - Hydraulic
- Metric Conversions
- Mirrors
- Pin Voltage Charts
- Procedures
- Removal & Installation
- Reset Procedures
- Rpo Codes
- Seats
- Sensor Range Charts
- Specifications
- Starter
- Steering
- Steering Column
- Steering Column Switches
- Steering Linkage
- Suspension Front
- Suspension Rear
- Testing & Diagnostics
- Theory & Operation
- Traction Control Disable
- Transmission
- Wheel Alignment
- Windows
- Wiper/washer Systems
- Wiring Diagrams - Engine Performance