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 CONTROLTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSSPEED CONTROL - DIAGNOSTIC TIPSVISUAL INSPECTIONOVERVIEW
1986 Ford Aerostar V6-183 3.0L
Visual Inspection: Overview
1986 Ford Aerostar V6-183 3.0LSECTION Overview
Visual inspection is an important part of diagnosis. The visual inspection should be done to locate obvious reason for the customer concern.
When performing visual inspection, check all items for abnormal conditions. Look for items such as bare, broken or disconnected wires and damaged vacuum hoses.
For the speed control to function properly, it is necessary that the speedometer cables, if so equipped, be properly routed and securely attached. All vacuum hoses must be securely attached and routed with no sharp bends or kinks. The servo (throttle actuator) and throttle linkage should operate freely and smoothly.
Any concerns found by the visual inspection should be corrected before further tests of the speed control system are made. The following items should be inspected.
When performing visual inspection, check all items for abnormal conditions. Look for items such as bare, broken or disconnected wires and damaged vacuum hoses.
For the speed control to function properly, it is necessary that the speedometer cables, if so equipped, be properly routed and securely attached. All vacuum hoses must be securely attached and routed with no sharp bends or kinks. The servo (throttle actuator) and throttle linkage should operate freely and smoothly.
Any concerns found by the visual inspection should be corrected before further tests of the speed control system are made. The following items should be inspected.
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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.