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 MANUALSCHEVROLET2001CAVALIER LS, 2.4 TREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 240 (ENGINE CONTROLS (TROUBLESHOOTING & DIAGNOSIS) - 2.2L (L61))TROUBLESHOOTINGINSPECTION/MAINTENANCE (I/M) CATALYST SYSTEM SET PROCEDURECONDITIONS FOR RUNNING
2001 Chevrolet Cavalier LS, 2.4 T
Conditions for Running
2001 Chevrolet Cavalier LS, 2.4 TSECTION Conditions for Running
WARNING: This page is about a different car, the 2004 Pontiac Sunfire and 2004 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
- The engine has been running longer than 10 minutes.
- The engine load must be stable.
- The idle air control (IAC) position parameter does not change more than 20 counts.
- The short term FT is between -23 and +16 percent.
- The mass air flow (MAF) is more than 10 g/s.
- The catalytic temperature is between 525-675°C (977-1,247°F).
- The vehicle speed sensor (VSS) is more than 5 km/h (3 mph).
- The barometric pressure (BARO) is more than 75 kPa.
- Engine coolant is at operating temperature, 70-125°C (158-257°F).
- The intake air temperature (IAT) is between -20 to +80°C (-4 to +176°F).
- The engine is in Closed Loop fuel control.
- The battery voltage is more than 11 volts.
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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.