Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1999CAMARO BASE, 2D COUPE, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESPECIFICATIONSENGINE ADJUSTMENTSIDLE SPEED & MIXTURE4-CYLINDER IDLE SPEED1.9L
1999 Chevrolet Camaro Base, 2D Coupe, Automatic
4-Cylinder Idle Speed: 1.9L
1999 Chevrolet Camaro Base, 2D Coupe, AutomaticSECTION 1.9L
- Warm engine to normal operating temperature. Turn ignition off. Ensure all accessories are off. Connect IAC Tool (SA9195E) to IAC valve electrical connector. Move lever on tool downward to completely seat IAC valve pintle. Insert IAC Air Plug (SA9106E) in throttle body assembly. Connect scan tool to Data Link Connector (DLC).
- Start engine and check idle speed. Idle speed should be between zero (stall) and 700 RPM. If idle speed is not as specified, check for vacuum leaks or binding throttle blade. Clean throttle bore if necessary.
- If idle speed is greater than 700 RPM after repairs, replace throttle body. DO NOT adjust minimum idle speed screw. Turn engine off. Remove IAC tool and reconnect IAC valve electrical connector. Check Throttle Position (TP) sensor voltage. See THROTTLE POSITION (TP) SENSOR .
- Remove IAC air plug. Start engine and verify proper idle speed. If proper idle speed cannot be obtained, see appropriate SELF-DIAGNOSTICS article.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.