redraws factory wiring diagrams in color and includes the component, splice and ground locations right in their diagrams. Pricing: - 1 month subscription $19.95 per vehicle 1-year subscription $29.95 per vehicle 4-year subscription $44.95 per vehicle - 1-year $29.95 subscription: additional vehicles $19/95 each 5-year $49.95 subscription: additional vehicles $34.95 each Which one should YOU choose? If you’re tracking down a wiring issue, is the better choice. In most cases, their diagrams are right from the factory manuals. They include wiring diagrams and technical service bulletins. Get the BEST auto repair information and are professional-grade shop manuals-period. See this post for more information on AC pressure gauge readings When a car AC system is overcharged, the high pressure tends to lock up the compressor, causing even a properly tensioned drive belt to slip and cause a squealing noise. AC refrigerant charge issuesĪ less common cause of AC compressor noise is an overcharged system. See this post for more information on clutch air gaps. Check the clutch coil resistance voltage and ground connection. The same noise can be caused by an excessive air gap between the pulley and clutch disc that prevents even a good clutch coil from being able to pull the clutch disc into contact with the pulley. If the clutch coil magnetic field is weak due to internal breakdown the clutch disc will slip causing a high pitched metal-to-metal screech. An AC compressor clutch relies on a metal clutch disc being pulled into contact with the AC pulley by the magnetic field created by the clutch coil. See this post for more information on drive belt wear.Ī squeal or screech can also be caused by a worn AC compressor clutch disc. When EPDM belts wear out, they no longer drive the pulley with the multiple “V’s,” instead they drive the belt from the backing of the belt and that can create a squealing sound. Modern multi-groove EPDM drive belts don’t crack like older neoprene belts, so you can’t judge wear visually. In addition to too little tension, a squeal can also be caused by a worn drive belt. See this post on how to test to see if the problem is caused by a tension issue. The squeal is caused by the belt slipping around the AC compressor pulley. This noise is most often due to too little tension on the AC belt. AC compressor noise - Squeal or screech when the compressor engages Ac Compressor Belt issues I often see questions on auto forums where the posters ask about car AC compressor noise when they use their AC. Edwardsville Auto's pro mechanics know that even the smallest gaps can cause serious damage to your car's cooling system and engine.Repair Topics > Air Conditioning Symptoms and Repair > Car AC compressor noise Car AC compressor noise What causes car AC compressor noise? We use kits with a "Rapid Seal" designed specifically for your compressor.It includes car AC compressor, accumulator and any needed expansion devices. We use a replacement kit assembly designed to meet or exceed OE function.Edwardsville Auto uses AC compressors that are durability-tested for high heat conditions.What To Expect When Edwardsville Auto In Edwardsville Replaces Your AC Compressor This pressure forces the liquid out of the compressor and through the cooling system. Once compressed, the freon is in a volatile, high-pressure state. The compressor is powered by a serpentine belt, which provides the energy needed to compress freon refrigerant to cool the car's cabin. Replacing Your Car's AC CompressorĪt Edwardsville Auto we recommended that car owners replace the complete AC compressor assembly because the compressor replacement core operates under extreme physical pressure. Call today at 61 and talk to one of our pro mechanics about repairing your car's AC compressor. A cracked or damaged compressor can cause your car air conditioning to fail. At Edwardsville Auto we know each component of your car's AC has a specific function.
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