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 MANUALSFORD1991AEROSTAR VAN CARGO EXTENDED, 4.0 X, AWDREPAIR AND DIAGNOSISTRANSMISSIONAUTOMATIC TRANSOVERHAUL - A4LDCOMPONENT DISASSEMBLY & REASSEMBLYCONTROL VALVE BODYREASSEMBLY
1991 Ford Aerostar Van Cargo Extended, 4.0 X, AWD
Control Valve Body: Reassembly
1991 Ford Aerostar Van Cargo Extended, 4.0 X, AWDSECTION Reassembly
Lubricate all parts with transmission fluid. Install valves, springs, plugs, and pins. See Fig 1. Using new gasket, apply petroleum jelly to keep gasket in place during separator plate reassembly. Install separator plate.
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.