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 MANUALSFORD1986AEROSTAR V6-183 3.0LREPAIR AND DIAGNOSISCRUISE CONTROLDESCRIPTION AND OPERATION
1986 Ford Aerostar V6-183 3.0L
Cruise Control: Description and Operation
1986 Ford Aerostar V6-183 3.0LSECTION Description and Operation
The speed control system is composed of On-Off, Set-Acc, Coast and Resume (if equipped) switches. The system contains vacuum hoses, servo (throttle actuator) assembly, speed sensor, amplifier, check valve assembly, and depending on model and year, a clutch switch, stop light switch or vacuum dump valve. 1983-87 models w/resume, also use a vacuum reserve tank.
To operate speed control system, engine must be running and vehicle speed must exceed 30 mph. When ``On-Off'' switch is actuated, the system is ready to accept a set speed signal. When vehicle speed stabilizes (exceeds 30 mph), and the ``On'' switch is engaged, the operator may depress or release the ``Set-Acc'' button. This speed will be maintained until a new speed has been set, brake pedal has been depressed, or the system is turned off.
RENDER: 1.0x
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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.