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
In-Tank Pump Test
- Check continuity and resistance of in-tank pump ballast resistor. Resistor is at right top of cowl and should have 0.4 ohms resistance.
- Continuity should be present between one side of ballast resistor and pin 3 of pump relay connector (right fender well). Continuity should exist between other side of resistor and pin 1 in connector. Pin 5 should be grounded.
- Insert positive voltmeter probe into rear of relay connector at pin 3 while connector is hooked up. Connect other probe to ground and crank engine. Voltmeter should indicate 8-10 volts. Insert probe at pin 4 and crank engine. Voltmeter should indicate 9 volts. If not, check battery and voltage supply to pump relay.
- If voltage is present, check continuity between pin 3 of relay connector and Dark Green wire at pump (fuel tank).
Factory Service Tools
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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.