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.
Evaporative Control THERMOVALVE Removal Tip (ASN 1188-04)
Reference number: ASN 1188-04
EVAPORATIVE CONTROL THERMOVALVE REMOVAL TIP
TECHNICAL SERVICE BULLETIN
DON'T BREAK THE THERMOVALVE
Model(s): 1986-88 Acura Legend
Group: Engine
Bulletin No.: ASN 1188-04
Date: November, 1988
SERVICE INFORMATION
If you're removing the evaporative control thermovalve from a Legend, get the fast idle valve out of the way first. Otherwise, as you unscrew the thermovalve, the thermovalve's vacuum hose nipples will hit the fast idle valve and break off. (See Fig 1 ).
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.