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.
Coasting Air System
Bring engine to normal operating temperature and run at idle. Disconnect neutral switch (M/T) or inhibitor switch (A/T), located on left side of transmission. Remove and plug vacuum hose at idle up solenoid for electrical load, located next to fuel filter. See Fig 1 . Increase engine speed to 3000 RPM. Decelerate and ensure that a vacuum is present at idle up solenoid port between 1500-2300 RPM. If vacuum is not present test idle up solenoid. See IDLE-UP SYSTEM in EXHAUST EMISSION SYSTEMS - PISTON ENGINE MODELS article.
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.