All About Automotive Air Conditioners Check Engine How automotive air conditioners work. three main components make up an ac system; a compressor, a condenser, and an evaporator. these components work together along with smaller components to keep the air cool and flowing. the compressor is a pump which is driven by a belt that attaches to the engine’s crankshaft. If the pressure switches detect a problem or go bad, they will prevent your air conditioning system from cooling. you can press the button to turn the system on, but it won’t engage the compressor to pressurize the system. how to fix it. many new cars will illuminate the check engine light (cel) if a pressure switch goes bad.
All About Automotive Air Conditioners Check Engine Step 1: turn the engine off and install the gauge set. step 2: restart the engine and turn on the air conditioning. step 3: observe the pressure readings. though every air conditioning system will vary, you want to see the high side pressure around 20 psi and the low side around 40 psi. Part 3 of 3: diagnosing a broken ac with ac manifold gauges. step 1: turn off the engine. turn off your car’s engine. step 2: locate the pressure ports. open the hood and locate the high and low pressure ports on the ac system. step 3: install the gauges. Step 1: to begin an ac recharge, start your car and turn your ac to max or high. step 2: the next step for an ac recharge is to determine if the ac compressor is engaging. an ac compressor is a device driven by the ac accessory belt that converts the refrigerant from liquid to gas. the compressor has a clutch at the end of it that should be. The epa doesn't require that refrigerant be removed and cleaned before car air conditioning recharging takes place. to get more information, you can call them at 800 296 1996. the epa also does not require that leak repairs be done before refrigerant is added, although states and or localities can require this so it's good to check.
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