1991 Olds 98 A/C Parts List
The air-conditioning system on the 1991 Oldmobile 98 is a complex system, with each part needing to function correctly for the system to work properly. The air-conditioning system uses a gas known as R12, or R134a if the car is retrofitted, to create cold air to blow from the vents inside the 98. This gas is kept sealed in a system and the pressure in this system can reach up to 180 psi. There are four main parts to the 98's air-conditioning system: compressor, accumulator, condenser and evaporator core.
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Compressor
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The compressor plays the largest role in the 1991 Oldsmobile 98's air-conditioning system. This component is responsible for keeping the system pressures where they are supposed to be and pumping the refrigerant throughout the entire air-conditioning system. The compressor cycles off and on by way of an electromagnetic clutch on the pulley. The compressor is on the lower driver's side of the engine.
Condenser
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The 1991 Oldsmobile 98's condenser is also called a liquifier. This component is where the refrigerant gas is turned back into a liquid. The changing of the gas is accomplished by cooling the refrigerant using a fan behind the condenser. The condenser on the 1991 Olds 98 is directly in front of the radiator.
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Accumulator
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The 98's accumulator acts as a liquid filter of the air conditioning system. It is a large cylinder that the refrigerant must pass through after leaving the condenser and prior to getting to the evaporator core. As the gas passes through, all of the liquid refrigerant in the gas falls to the bottom of the accumulator, keeping it from reaching the compressor and causing damage. This unit is located on the rear passenger's side of the engine compartment and should be replaced any time the air-conditioning system gets opened.
Evaporator Core
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The evaporator core is the last stop for the refrigerant, prior to returning to the compressor. Air from inside the car's cabin recirculates over the evaporator core, cooling the air, and then the cool air is pushed through the vents, cooling the cabin. This component is one of the tougher ones to replace on the 1991 Oldsmobile 98, as it is tucked behind the vehicle's dashboard.
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References
- AutoZone Repair Guide: Air Condition Compressor Information
- AutoZone Repair Guide: 1991 Oldsmobile 98 Air Condition Compressor Removal
- AutoZone Repair Guide: Air Condition Accumulator Information
- AutoZone Repair Guide: 1991 Oldsmobile 98 Air Condition Accumulator Removal
- AutoZone Repair Guide: Air Condition Condenser Information
- AutoZone Repair Guide: 1991 Oldsmobile 98 Air Condition Condenser Removal
