2007 Santa Fe 3.3 Diagram for AC fusing location and relay system for compressor. My experience with AC systems (having done evacuation and fill on older r12 systems) tells me the outer part should spin when the clutch is engaged. Clicking this will make more experts see the question and we will remind you when it gets answered. This switch is installed in the power steering system and reports on high pressure conditions. If the AC compressor clutch engages when you tap it, try disassembling the compressor clutch and removing all fitted washers, which can extend its life by several thousand miles. In addition, loose compressor mounting can cause misalignment of the pulleys.To remove the compressor, first recover the refrigerant from the system using the proper equipment. A/C clutch engaged all the time. Make sure the installation tool is properly aligned during installation. In a few car models, the power of the air conditioning system flows from the AC switch to the fuse before being transmitted to the clutch oil through the low-pressure evaporator temperature. Since the lubricating oil is carried by the refrigerant, a loss could cause damage to the compressor if it were allowed to operate without sufficient lubrication. Squealing noises from the engine compartment that increase in frequency as the engine rpm is raised, or when the A/C compressor is engaged, can usually be attributed to loose belt(s). Having a bad ac compressor or cracked belt won’t hurt the overall engine operation, but you won’t get cold air into the cabin. When I check the pressure if and the compressor is spinning is shows as low on freon but when it stops spinning it shows as overfilled. In non-automatic temperature control systems (ATC), the function of the ambient temperature switch is to inhibit compressor clutch operation in cold ambient temperatures. Once you refill the Freon, check for any leakages to prevent the problem from reoccurring. Yes you should be fine, best to put it under vacuum before charging. However, if the bearing is replaceable, drive the bearing out of the rotor hub with a rotor bearing removal tool. Low-pressure conditions can indicate failures such as a clogged orifice tube, low refrigerant charge, expansion valve stuck closed, or a restriction in the high side of the A/C system. You need to have the refrigerant charge level checked, it sounds like it is low. Reconnect the electrical connectors. Ask Question Asked 1 year, 8 months ago. If the clutch doesn’t engage, the problem could be a blown fuse, an open in the wire to the clutch coil, a bad clutch coil, a poor ground, or a low pressure lockout. Torque to manufacturer’s specifications. Well, there are many reasons behind your AC, not blowing cool air. Bypass the Relay. Want Answer 0. With a engine off: If you want to purchase a power probe for the clutch you can do that or try to use a wire such as in the video above. ... Dryer sweats and ac clutch engages when truck cranks and when the ac gets turned on but after several minutes it disengages again but it came back on as soon as I hit it again. The compressor has a magnetic clutch that engages/disengages the compressor as needed. -- Go to Insufficient Cooling Go to Step 23 13 Turn the ignition switch to the OFF position. As soon as I put the transmission in D or R, I can feel, hear and see the compressor disengaging and the high speed fan turning off. I can turn it back on by either turning the engine off and let it cool off or turn off the a/c for same amount of time. Inspect the pulleys for chips, nicks, cracks, tool marks, bent sidewalls, severe corrosion or other damage. Then compressor starts again and all back to normal. These noises are common when driving the car at high speed. The AC clutch engaged and the hi pressure line would get sweaty ice cold. Posted by Anonymous on Jun 17, 2011. When the accelerator pedal is pressed all the way to the floor, this switch opens the electrical circuit to the compressor clutch to temporarily disable the compressor. I'm new here, please be nice reference: whrl.pl/Re3doW. Score 2. Pull out the AC fuse and examine the filament inside the fuse. Sometimes, when the clutch is worn, the disc is too thin and may not engage properly. Recommended Posts. On my 2003 Chevy Silverado, the A/C compressor won't kick on. It is common when facing issues such as fan clutch stuck engaged or fan clutch hard to spin. When certain malfunctions occur, high-side pressures could exceed the safe operating limits of the compressor, hoses, or other components. Show Less. 2004 Mitsubishi spyder.trying to locate or learn the location of low pressure sensor for jumper to get pump to engage for 134 pressure check.or do I just hit 12vdc to blackw/striped wire on compressor. The computer may decide to prevent clutch operation under conditions of high engine load. Your email address will not be published. Turned off the car and the A/C and tried turning the compressor. AC Clutch won't engage 96 Legacy. Doesnt make sense to replace the ac clutch when the compressor has 100k on it or more. Don't subscribe Afraid if there’s other issues, I’ll blame them…, So I could do the clutch removal, grinding and replace. Piston style compressors are the most popular, and are either in line, V-type, radial, axial or wobble plate. The large magnet forces the hub to pull against the pulley. Then look at the front of the compressor clutch. These are engine load sensors. AC relay tests ok; however, I do NOT hear/feel the AC relay activate... may indicate the ECU isn't sending 12v to the relay (more on this below). Cancel. Using a clutch plate and hub installation tool, press the hub onto the shaft. What’s your thoughts on grinding down the clutch plate so it’s always engaged to the pulley / always turns the compressor? Thanks. or $3K at most? The squealing noises are a bonus. could it be the ralay? Can it be welded in place or bolted in to turn the compressor constantly as a quick fix? It could also raise idle speed through control of an idle speed control device. If there is something wrong with the pressure, the ac clutch won’t engage. When I turn on the AC, the compressor clutch does not engage and the fans do not spin. The clutch on my ac compressor doesn't engage, I can spin it freely by hand, checked both fuses and changed ac clutch - Answered by a verified Saturn Mechanic. 1,808 Posts . When AC is off for when the clutch is not engaged - no noise at all… I have been getting alot of different answers as to what it could be and it is very confusing… to me - it sounds like a clutch issue and I have seen videos on how to take apart and see if it is a bearing or bad clutch. Second, connect the fused jumper to the same side where you unplugged your wire connector. Tighten the forcing screw against the puller pilot to remove the coil assembly. Do I have to replace my compressor? Method 3: Replacing The Clutch. Well, I listened at the relay while my wife turned cycled the AC on and off but I don't hear any click. I put 12v across the compressor, it made a quiet click but the clutch did not engage. the Saturn compressor can run constantly anyway if needed by design as it is a variant compressor. The clutch on my AC compressor will engage when I start my truck up but after about thirty seconds it will stop and not come back on until I turn my truck off and back on again. 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