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.
1982 Honda Prelude Automatic TransFACTORY OEM SERVICE PROCEDURE
Improper Door Action
- If door did not respond as indicated above (did not rise or fall), first check to see if door is binding. If okay, then check air bleed valve.
- Disconnect and plug hose leading to air bleed valve, then crank engine for about 5 seconds.
- Air control valve door should rise and remain up for at least 3 seconds. If it does, replace air bleed valve and repeat test.
- If door does not rise or remain open, proceed with testing of air control diaphragm and check valve.
- Disconnect vacuum hose from air control diaphragm and remove deflector plate. Raise air control valve door manually and, while blocking inlet pipe, release valve door.
Block inlet pipe as shown.
- If valve door remains up, replace check valve and retest. If valve door drops to closed position, replace air control diaphragm and retest.
Factory Service Tools
Use the Manual With the Right Hardware
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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.