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2001 Chevrolet Camaro Engine Performance

November 5th, 2008 · No Comments

Before performing any on-vehicle adjustments to fuel or ignition systems, ensure engine mechanical condition is okay. CAUTION: When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.

VALVE CLEARANCE
NOTE: All models use hydraulic lifters. Adjustments are not required.
IGNITION TIMING
NOTE: All engines are equipped with C3I, DIS or IDI ignition systems. Timing on these systems is not adjustable.

IDLE SPEED & MIXTURE
NOTE: Idle mixture is controlled by Powertrain Control Module (PCM). Adjustment is not possible. After replacement of Idle Air Control (IAC) valve, system must be cycled as identified for PCM to properly control idle speed. If idle speed is not okay after cycling system, problem is usually caused by a dirty throttle plate or vacuum leaks. Ensure all vacuum components are functioning properly.

IDLE SPEED (4-CYLINDER)
1.9L (SC1, SC2, SL, SL1, SL2 & SW2)
Start engine and run until normal operating temperature is reached. Slowly vary engine speed between idle and 3500 RPM 3 times. PCM will now properly control idle speed.
2.2L (L100, L200 & LW200)
Turn ignition on with engine off for 10 seconds. Turn ignition off for 10 seconds. Start engine and idle for 30 seconds. Slowly vary engine speed between idle and 3500 RPM 5 times. Return engine to idle. PCM will now properly control idle speed. 2.2L (Cavalier & Sunfire) & 2.4L (Alero, Cavalier, Grand Am & Sunfire)
NOTE: Information for bi-fuel Cavalier is not available. Turn ignition on with engine off. Turn ignition off for 10 seconds. Start engine and idle. PCM will now properly control idle speed

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