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 MANUALSMITSUBISHI2003ECLIPSE RS, STANDARDREPAIR AND DIAGNOSISGENERAL INFORMATIONCOMPUTER RELEARN PROCEDURESPOWERTRAIN CONTROL MODULE
2003 Mitsubishi Eclipse RS, Standard
Powertrain Control Module
2003 Mitsubishi Eclipse RS, StandardSECTION Powertrain Control Module
If engine speed becomes unstable after disconnecting battery, reset Powertrain Control Module (PCM) using following method:
- Place transmission/transaxle selector lever in Park position and turn engine off.
- Start engine.
- Turn off air conditioning.
- Allow engine to reach normal operating temperature.
- Turn engine off and on again.
- Allow engine to idle for about 10 minutes.
- When engine speed stabilizes, resetting procedure is complete.
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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.