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 42 (ENGINE CONTROL SYSTEM TROUBLESHOOTING - NO CODES)SYMPTOMSCUTS OUT, MISSESPOSSIBLE CAUSE & CORRECTION
2001 Chevrolet Cavalier LS, 2.4 T
Possible Cause & Correction
2001 Chevrolet Cavalier LS, 2.4 TSECTION Possible Cause & Correction
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Check the following items:
- Check ignition wires for short or faulty insulation. Spray spark plug wires with a fine mist of water to check for shorts.
- Using Spark Tester (J-26792), check for available secondary voltage.
- Check ignition system for faulty ground and power feed circuits.
- Ensure ignition control wiring harness is not routed too close to wiring which may cause induced voltage signals.
- Check Transaxle Range (TR) switch input with vehicle in drive and shifter in drive or overdrive.
- Remove spark plugs and check for correct heat range, wear, cracks, wetness, improper gap or heavy deposits.
- Check for poor quality or alcohol contaminated fuel.
- Check for improper fuel pressure. Check for restricted fuel filter. See FUEL SYSTEM PRESSURE TEST under BASIC FUEL SYSTEM CHECKS in appropriate BASIC DIAGNOSTIC PROCEDURES article.
- Check for plugged injectors. Perform injector balance test. See FUEL INJECTOR BALANCE TEST under FUEL SYSTEMS in appropriate SYSTEM & COMPONENT TESTING article.
- Check PCM for proper ground circuits. Check for internal PCM intermittents.
- Check engine compression. Check for incorrect valve timing, bent push rods, broken valve springs or worn camshaft lobes.
- Check for sticking EGR valve.
- Check TP sensor for sticking and binding. Check for correct TP sensor voltage. See FUEL SYSTEMS in appropriate SERVICE & ADJUSTMENT SPECIFICATIONS article.
- Using a scan tool, monitor the Knock Sensor (KS) system for any excessive spark retard activity.
- Check MAF sensor and connections.
- Check for proper Crankshaft Position (CKP) and Camshaft Position (CMP) sensor resistance.
- Check exhaust system for restrictions, such as a damaged or collapsed pipe, muffler or catalytic converter.
- Check for faulty motor mounts.
- Check injector drivers by disconnecting all injector harness connectors and connecting an injector test light (noid light) to each injector's harness terminal. Light should flash while cranking.
- Check intake and exhaust manifold passages for casting flash.
- Check PCM and engine grounds for correct locations, tight and clean connections. See WIRING DIAGRAMS article.
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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.