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.
Unconditioned Air
Air, either outside or recirculated, enters the system and is drawn through the evaporator core. There it receives maximum cooling if system controls are set for cooling mode of operation.
After leaving the evaporator, the air is forced by the blower into the heater and A/C selector duct assembly.
Depending on position of the temperature control door, air passes either through or around the heater core, in proper proportions to obtain the desired discharge air temperature.
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.