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.
Section 35 (A/C-Heater System - Manual): Description
Integral A/C-heater system is a blend-air system. Air entering the vehicle must pass through evaporator core and through, or around, the heater core, to provide air of the desired temperature. Compressor operation is controlled by a pressure sensing switch on top of the accumulator.
Auxiliary A/C systems are available. These systems operate in conjunction with the main system, and provide air conditioning only (auxiliary heater is a separate unit). Rear blower speed is independent of main system control. Rear blower may be operated even when front blower is off.
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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.