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.
HVAC System - Manual: Description
Major A/C-heater system components include a plate-fin evaporator core, accumulator-drier, fixed orifice tube and clutch cycling pressure switch. The evaporator case, attached to engine compartment firewall, contains evaporator core, accumulator-drier, blower motor and wheel, blower resistor, outside/recirculation door and vacuum motor, vacuum reservoir and vacuum/wiring harness assemblies.
On passenger compartment side of firewall, plenum assembly attaches to the evaporator case. The plenum assembly contains the heat defrost door, temperature blend door, vent heat door, heater core and vacuum motor assemblies.
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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.