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.
Air Bypass/Air Control Valve
The combination air bypass/air control valve is used with some managed air thermactor systems. The valve combines the functions of the two valves into one unit. There is a normally open valve and two normally closed valves; the bleed type and the non-bleed type. The bypass portion of the valve dumps air to the atmosphere, while the control valve portion directs air upstream or downstream.
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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.