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.
1983 Chrysler ImperialFACTORY OEM SERVICE PROCEDURE
Calibration Verification
NOTE:
This procedure can be used to verify that the computer is operating properly. Engine must be at normal temperature.
- Air cleaner cover must be tight and exhaust system must be checked to ensure no leaks or holes exist. Connect EFI tester to system and connect a CO meter to tailpipe.
- Remove air pump hose from downstream air injection tube and plug tube. Connect diagnostic aid to AIS motor. Start engine, leave transmission selector in "P", and place speed control switch in manual position. Idle for at least 90 seconds.
- Disconnect oxygen sensor wire and ground wiring harness side of connector. Increase engine speed to 2000-2500 RPM and hold it constant with diagnostic aid control.
- CO reading must be between 0.5-3.5%. If greater than 3.5%, replace computer.
- Remove test equipment and reconnect air injection tube.
Factory Service Tools
Use the Manual With the Right Hardware
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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.