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 MANUALSMERCURY1982COLONY PARK V8-302 5.0L VIN F 2-BBLREPAIR AND DIAGNOSISCRUISE CONTROLCRUISE CONTROL SERVOTESTING AND INSPECTION
1982 Mercury Colony Park V8-302 5.0L VIN F 2-bbl
Cruise Control Servo: Testing and Inspection
1982 Mercury Colony Park V8-302 5.0L VIN F 2-bblSECTION Testing and Inspection
1. Disconnect electrical connector at the amplifier.
2. Connect an ohmmeter between circuit 145 and circuit 144 wire leads at the electrical connector. A resistance of 40---125 ohms should be obtained.
3. Connect an ohmmeter between circuit 144 and 146 wire leads. A resistance of 60---190 ohms should be obtained.
4. Start engine.
5. Connect circuit lead 144 to positive terminal of the battery.
6. Connect circuit lead 146 to ground, and momentarily touch circuit lead 145 to ground. The servo throttle actuator arm should pull in and engine speed should increase. The arm should also hold in position or slowly release. When circuit 146 lead is removed from ground, the servo should release.
7. Replace servo if it fails any part of the preceding test. On 1984---85 models equipped with 4-120 diesel engine, check servo for vacuum supply. If no vacuum is available, the vacuum pump may be malfunctioning. If circuit 144 is shorted to either circuit 146 or circuit 145 leads, it may be necessary to replace the amplifier.
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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.