Hummer H3 A/C Expansion Valve

Hummer H3T A/C Expansion Valve

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<h2>Car A/C&nbsp;expansion valve</h2>
&nbsp;
The expansion valve is a crucial component that plays a key role in regulating the flow of refrigerant through the car&rsquo;s AC system. It is positioned between the high-pressure and low-pressure sides of the AC system. The expansion valve acts as a valve or metering device that controls the flow of high-pressure, high-temperature liquid refrigerant from the condenser to the low-pressure side, where it can evaporate.
&nbsp;
<h2>How does an A/C expansion valve work?</h2>
&nbsp;
As the high-pressure liquid refrigerant passes through the Expansion Valve, it undergoes a rapid pressure reduction. This causes the refrigerant to expand and transform into a low-pressure, low-temperature gas.&nbsp;The expansion of the refrigerant leads to a significant drop in temperature. This cold refrigerant gas is then circulated through the evaporator coil in the car's AC system. The cold refrigerant gas absorbs heat from the surrounding air as it passes over the evaporator coil. This process cools down the air, which is then blown into the vehicle's interior by the AC blower fan.
&nbsp;
<h2>Signs of a bad expansion valve</h2>
&nbsp;
You should be aware of these common signs that may indicate a problem with the AC expansion valve:
<ul>
<li>Insufficient Cooling: Reduced cooling from the AC system.</li>
<li>Inconsistent Temperature: Difficulty maintaining a consistent interior temperature.</li>
<li>Warm Air at Idle: Warmer air from vents when the car is idle.</li>
<li>Excessive Cooling: Overly cold air and potential freezing of the evaporator coil.</li>
<li>AC Cycling Rapidly: Frequent on/off cycling of the AC compressor.</li>
<li>Hissing or Whistling Noises: Unusual noises from the AC system.</li>
<li>AC System Pressure Abnormalities: Irregular pressure readings in the AC system.</li>
<li>Frost on the Evaporator Coil: Ice buildup on the evaporator coil.</li>
</ul>

A/C Expansion Valve

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Air Filter Box

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Air Flow Sensor

Air Intake Duct

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Air Intake Hose

Air Intake Manifold Actuator Control Solenoid

Air Intake Manifold Flap Adjuster

Air Intake Manifold Runner Control Sensor

Electric Vacuum Pump

Engine Air Duct Assembly

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Intake Manifold

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Oxygen Sensor

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Pressure Sensor

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Throttle Body

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Timing-Control Valve Solenoid

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Valve Lifters Tappet

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Belt Tensioner

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Crankshaft Position Sensor

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Engine Oil Dipstick Tube

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Oil Cooler

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Oil Cooler Line

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Oil Filter

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Oil Level Sensor

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Oil Pan

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Ignition Coil

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Spark Plug

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Auxiliary Water Pump

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Expansion Tank

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Expansion Tank Mounting Plate

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Fuel Cooler

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Radiator

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Radiator Hose

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Radiator Support Assembly

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Temperature Sensor

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Turbo Hose

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Water Coolant Pipe

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Water Outlet

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Engine Cooling

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Engine Mount

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Catalytic Converter

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EGR Valve

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Exhaust Fluid Heater

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Exhaust Gas Temperature Sensor

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Exhaust Manifold

Fuel Tank Breather Valve

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Fuel Vapor Leak Detection Pump

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Nitrogen Oxide Sensor

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Secondary Air Injection Check Valve

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Vapor Canister Vent Solenoid

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Exhaust & Emission Systems

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Fuel Filter

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Fuel Injection Control Module

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Fuel Injection Pressure Regulator

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Fuel Injector

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Fuel Injector Module Wiring Harness

Fuel Line Kit

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Fuel Sending Unit

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High Pressure Fuel Pump

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Idle Air Control Valve

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Fuel Systems & Components

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The engine comprises many essential elements such as the lower cylinder block, upper cylinder head(s), and the cooling & lubricating systems. With A-Premium aftermarket engine components, you can expect that your engine deliver years of reliable performance. We offer a diverse selection of engine components from air filters and ignition coils (kits) to fuel pumps to cater to your needs.

Hummer A/C Expansion Valve

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