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.
A/C Idle-Up System
The A/C idle-up system provides a stable idle speed when A/C is operating. Engine Control Module (ECM) controls A/C idle-up valve which allows extra intake air to by-pass throttle valve for increased idle speed. A/C idle-up valve uses a Black 2-pin connector. The A/C idle-up valve is located in different locations. See A/C IDLE-UP VALVE LOCATIONS table. See Figure.
| Application | Valve Location |
|---|---|
| T100 3.4L V6 | Passenger's Side Front Corner Of Engine, Bolted To Air Intake Chamber Near Throttle Body |
NO RELATED
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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.