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 MANUALSEAGLE1989SUMMIT LX, 1.6 Y, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMTESTS W/CODESRETRIEVING CODES
1989 Eagle Summit LX, 1.6 Y, Automatic
Retrieving Codes
1989 Eagle Summit LX, 1.6 Y, AutomaticSECTION Retrieving Codes
NOTE:
Oxygen sensor memory is erased when ignition switch is turned off. To diagnose oxygen sensor, drive vehicle a good distance and keep engine running.
- Signals will appear on voltmeter as long and short 12-volt pulses. Long pulses represent tens; short pulses represent ones. For example, 4 long pulses and 3 short pulses indicate code 43. See DIAGNOSTIC FAULT CHARTS. After recording abnormal code(s), perform necessary repair.
- After repair, turn ignition off and disconnect negative battery cable for 15 seconds to erase ECU memory. Reconnect power supply and repeat self-diagnostics to confirm repair.
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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.