Install a new belt by correctly positioning it in its pulley grooves. I have just refilled my C202 AC……….now my fan turns on and off with some noise whenever i turn on the AC,what could be the problem. The large magnet forces the hub to pull against the pulley. are optimum for proper system operation. 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. A/C compressor started making a grinding noise as if bearings were bad in the clutch. In the engine bay, right hand side by the firewall. Now, install the compressor clutch rotor and bearing assembly on the front head. If the clutch spins freely at all times, and the compressor never comes on, then it may not be engaging and therefore needs to be replaced. One is for ground and one for the 12-volt power cable. Car is 2002 PT Cruiser, I'm original owner. How Long Do CVT Transmissions Last? The squealing noises are a bonus. Clicking this will make more experts see the question and we will remind you when it gets answered. 5 Most Common Automatic Transmission Problems, Essential Items to Properly Wash Your Car by Hand. Worn Out Components: The ac compressor clutch has many components such as bearing, brackets, and tensioners. Look into This! Use a digital voltmeter to measure the ground and voltage of the battery at the detached connector cable. 2001 Lincoln Town Car. Driving a Toyota Land Cruiser: Why Is It Appealing? How can I force the clutch to engage so I can recharge the circuit? Worn shaft bearings will build up resistance in the wiring and fail to turn on the clutch. I tried banging on the compressor pulley, but that didn't do anything. The fan still works, but the ac does not come on. He told us that the best case scenario is 700 bucks for a new compressor/1400 to 1700 if he has to basically replace everything. But when the A/C didn’t work, it’s hard to spin them. Depending on how it locked up, if it grenaded internally, you could be looking at a new condenser, dryer and expansion valve. The A/C worked fine before the truck was parked for about 5 months. This switch is located on the metal canister next to the compressor. Be sure to torque the mountings as outlined in the service information to avoid binding the compressor’s internal mechanism. Hold the puller in place and tighten the puller screw against the guide to remove the pulley rotor and bearing assembly. Some vehicles are equipped with low-pressure cutout switches. dont know how to test 3 wire pressure switch When the switch goes bad, it will no longer be able to measure pressure and will leave the clutch engaged the entire time. Although technically the compressor can be rebuilt, it is usually replaced. The compressor drive hub is usually found at the front of the pulley and is attached directly to the compressor driveshaft. When I attempt to turn on A/C I pop the #6 fuse controlling the EATC on my dash. 1 Answer Blows hot air clutch does not engage compressor. Go on to check the fuse if you cannot read the voltage readings. The process is a bit different for older cars that are not compatible with the R134a type. Inadequate lubrication can damage the compressor. Remove the compressor mounting bolts and lift the compressor from the engine compartment. Bad for the car to start with compressor on? If the clutch fails to engage and spin, but you hear electrical buzzing or clicks inside, it indicates an internal clutch short. This last weekend, after a long drive (all highway), I pulled off on my exit to get gas. If I run the compressor right to the battery it will stay on until I unplug it. I put 12v across the compressor, it made a quiet click but the clutch did not engage. Prev ; 1; 2; Next; Page 1 of 2 . 10 Best Tire Companies In The World [Updated In 2021]. I would leave it like that till the fall, then add a spacer or something so the clutch isn’t engaged. Most modern compressors have a clutch and drive pulley. How To Reset Check Engine Light: Follow These 4 Easy Ways! When replacing belt(s), inspect the A/C compressor and its corresponding pulley(s) for improper alignment. There's a cost/benefit of rebuilding the system vs a periodic vacuum & recharge. I need a fix to keep vent temps down in this heat, i.e. I’d leave the AC siwtch on all the time. Took off the old 1 but couldn’t see any signs of damage. If resistance is not within specification, then replace the coil or clutch assembly. Hi, I have a 2007 Honda Accord 4cyclinder 4 door. A careful inspection of the system and its components will help you to pinpoint the source of trouble. I have an open coil. Tsukasa Azuma is an awesome car blogger of Car From Japan. Tsukasa’s blog is one of the best resources for information about keeping your favorite imported car running smoothly. When I turn on the A/C the plate is engaged and is quiet, but I can see the nut turning pretty slowly. It is an ominous sign when the clutch engages but the compressor does not spin. I hooked up the guages and while idling it shows about 35 PSI on low and about 180 PSI on hi side. This switch is located on the metal canister next to the compressor. Score 2. The Best TOAD Vehicles for Frequent Campers. Knowing how to manually engage AC compressor clutch will help you skip a visit to the mechanic. Check the compressor belt(s) for wear and proper adjustment. There are a couple of ways you can fix the problem to bring back the air conditioning system in order. Comment; Flag; More. The thing is that my AC clutch will always engage when engine is cold but will shut off about 15-20 after. Also, find out whether the clutch and the pulley are spinning. Japanese Government License No# Tokyo 305561505308, Member of JUMVEA (Approved by Government of Japan) No. Remove the connector and force it with 12v and ground. Turning whenever the engine is cranked, the A/C Compressor Clutch Pulley will spin even if the AC Compressor is off. Tighten the body several turns and remove the installation tool to make sure the Woodruff key is still in place in the keyway before installing the clutch plate and hub assembly into its final position. It repeats this never staying on. Very informative article. User #492800 3 posts. Some electric compres­sors are belt-driven as well Read up on the specific system on any vehicle you’re not familiar with before beginning service. Can it be welded in place or bolted in to turn the compressor constantly as a quick fix? Attach the other end of the jumper wire to the positive terminal of the battery. A bad AC compressor clutch needs immediate fixing. As well, my blower motor resistor sent bad so I jumped that temporarily so it’s only blowing max air. You can also subscribe without commenting. Trying to locate relay. I'm new here, please be nice reference: whrl.pl/Re3doW. Afraid if there’s other issues, I’ll blame them…, So I could do the clutch removal, grinding and replace. When this component does not work properly, the engine does not get the cold air flow – leading to some major complications. Once the assembly is properly seated, install the retainer ring. SPONSORED LINKS. Second, connect the fused jumper to the same side where you unplugged your wire connector. Before removing a serpentine V-ribbed belt, make sure there is a belt routing diagram handy or draw one prior to belt removal, to prevent installation problems. Position a rotor and bearing installation tool directly over the rotor and tighten the center screw to force the assembly onto the compressor front head. Tips – When you are going to manually engage the compressor, make sure that the system has enough oil. Followers 3. I believe the A/C clutch, coil or whole compressor could be shot. Is Spoon Engine A Real Thing? The clutch prompts the drive shaft to start rotating once a certain rotational speed is reached and allows the engine to run without always rotating the drive shaft. The clutch is not frozen -- it spins freely. If I disconnect the pressure switch on dryer clutch stops. This would not only cause a refrigerant leak, but the oil could cause the compressor clutch to slip. If the clutch does not engage, then check the clutch ground connection and coil resistance. The car is a 2010 honda civic with 150K miles and has banged up bumper. 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 . Share this conversation. Low level of refrigerant. To remove the clutch rotor assembly, remove the rotor and bearing retaining ring and install the appropriate puller. Will check again and add leak dye to see where the issue may be and get it fixed. Reconnect the electrical connectors. I noticed my A/C compressor stays engaged when I turn the A/C on. Is There Honda Civic Si Automatic? The system’s computer keeps the relay grounded but it can go on and off due to the bad switch. From the leaking refrigerant to the bad compressor, even a tiny fault in the HVAC system can make you face difficulty with your AC. Yes you should be fine, best to put it under vacuum before charging. the AC light never comes on. 2. Thank You, a/c just quit i can see clutch is not engaging. The computer may decide to prevent clutch operation under conditions of high engine load. The compressor clutch circuit is opened if the pressure in the system drops too low. Still needing some help on this one. An easy way to check the clutch of your AC compressor is to gently and lightly tap on the clutch when the compressor is running and the motor is on. It may be necessary to remove other accessory drive belts to gain access to the compressor belt. I can then start AC again for small amount of time. -- Go to Insufficient Cooling Go to Step 23 13 Turn the ignition switch to the OFF position. Did add the Freon and the AC compressor clutch did engage. Your email address will not be published. Changing the compressor clutch could be the only solution in this case. Archived . Check Function. Compressors may be of a piston, rotary vane or scroll design. Tighten the forcing screw against the puller pilot to remove the coil assembly. I added more R134 to the line and it … Install the compressor in the engine compartment and secure the mounting bolts. Before starting the next step of diagnosis, you should know that a low-pressure switch can create problems with the compressor clutch’s relay in some car models. keep compressor engaged. The AC compressor clutch often has a plug with 2 pins. To prevent this from happening, many systems are equipped with high-pressure cutout switches. 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. 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. AC compressor won't engage clutch - 2002 Ford Escort. Special oils are used to keep the internal windings from shorting to the compressor case, and even small contamination with PAG left over in your service equipment is enough to cause total system failure. Your email address will not be published. I checked the pulley without the belt & it spins free & noiseless. 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. These switches open the clutch circuit in the event that pressures become excessive. Compressor spins and doesn't disengage. (too much load on the engine?). Cars are exposed to road vibrations, temperature extremes, and just time. Products; How It Works; Port finder; Get Help; Where to Buy; Find a retailer . Got a used compressor off of a newer car with 12k on it. 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. You have to make sure that the compressor has enough oil to function properly. When I turn on the AC, the compressor clutch does not engage and the fans do not spin. When I turn the A/C on, I can see that the clutch is turning the compressor intermittently & it appears that the belt is sliding on the pulley. Discussion Starter • #1 • Sep 9, 2013. 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. Add oil if the level is below the normal point. System has freon in it. Well, there are many reasons behind your AC, not blowing cool air. There are several different compressor designs, but all perform the same function: they move, or pump the refrigerant throughout the system, and they compress the low pressure vaporized refrigerant into a high pressure vapor. Cancel. Make sure the installation tool is properly aligned during installation. It was working find but now nothin7. The clutch regulates the status of the ac compressor. He owns a car repair shop at downtown Osaka, and he put all that experience to good use in his sharing posts. 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. A delay can cause serious damage to the air conditioning system and the engine. Both the pulley and the clutch should be spinning. how do i test it? The AC in my son's 2000 C230K cut out right after we bought it from a PP. So it’s worth maybe $2.5K? The Compressor is not meant to run all the time. What’s your thoughts on grinding down the clutch plate so it’s always engaged to the pulley / always turns the compressor? Only service equipment approved for hybrid/electric compressor service should be used. In addition, pulley misalignment can cause the belt to enter the compressor pulley on an angle, also causing noise. Drain the compressor of any oil it contained during shipment. Third, attach the other end of … However, if the bearing is replaceable, drive the bearing out of the rotor hub with a rotor bearing removal tool. Rotate the compressor through by hand at least 20 complete revolutions to thoroughly lubricate the compressor before initial start-up.Install the compressor drive belt and adjust if necessary. How do I know if my AC clutch relay is bad? Once repairs are made, the switch will allow normal clutch engagement. how to manually engage ac compressor clutch. If the belt pulleys are severely misaligned, look for improper positioning of the A/C compressor or its corresponding pulley, improper fit of the pulley or shaft, or incorrect components installed. What do you suggest? Aligned pulleys reduce both pulley and belt wear, and vibration of engine components. AC compressor won't engage clutch - 2002 Ford Escort. When certain malfunctions occur, high-side pressures could exceed the safe operating limits of the compressor, hoses, or other components. Using a clutch plate and hub installation tool, press the hub onto the shaft. In this case, air will move through, and owing to the pressure; there will be the creation of a noise that is similar to a roar. In some vehicles the compressor clutch relay is turned on and off by the low pressure switch and the evaporator temperature sensor. Print this page; Share this page × Ad. Thanks! When I short across the relay switch contacts, the clutch engages and the compressor turns, but makes noise. Disconnect the pressure hoses from the compressor and plug the hoses to prevent system contamination. But then as soon as I begin lifting my foot off the brake, the AC switching off routine begins again. The purpose of this switch is also compressor protection. No matter how high you set that regulator, it does not seem to work. Replace the fuse if the filament has melted or blown apart. When the coolant level in the system goes down, the low-pressure switch does not allow the compressor to rotate. could it be the ralay? A bad AC compressor clutch needs immediate fixing. These compressors are powered by ex­tremely high voltage, and improper service techniques can result in per­sonal injury. If your car is compatible with R134a type of refrigerant, attaching a can to the system will override the low-pressure switch and restore the normal function of the compressor clutch. If you cant figure out how to test the relay from looking at the underhood fuse box then you will need to obtain a wiring diagram to understand the circuit then perfrom the diagnosis. There is no need to switch on the air conditioning system for this method to work. White Smoke From Exhaust: Main Causes and How to Fix. Tried to add freon but it won't take. Check the ac clutch relay, check to see if the relay works and then check the relay control signal, probably a ground controlled circuit. Do I have to replace my compressor? If the pulley won't turn with the ignition off, then the a/c pump and clutch pulley have both frozen and you'll have to leave the belt off but it should be OK to drive a short distance. Ask Question Asked 5 years, 4 months ago. On my 2003 Chevy Silverado, the A/C compressor won't kick on. Step 3. Conversely, when a problem is detected where conditions are not optimum, the compressor is disengaged by the ECM. If it does not, shut the engine off and disconnect the negative battery cable with a socket. Look for the AC relay in the fuse box. Does the A/C compressor clutch engage? relay is good. Apr 11, 2010 | 2003 Chevrolet Silverado 2500HD. Thanks. You'll continue to have good enough pressure so … Always use manufacturer’s tension recommendations. Start the engine and turn on the A/C. After the belt is removed, spin the pulley to determine if it wobbles or has any noticeable bearing wear. 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And reports on high pressure conditions engage when engine is running, both on normal or MAX and! Proper Woodruff key positioning then check the fuse if the ac clutch engages but won t spin, vibration..., suspect a defective compressor dutch plate, hub or rotor normal.! Between these … AC Pro, remove the rotor hub with a or! Move and hear it pull in, first check your battery-side connection bought car!, cracks, tool marks, bent sidewalls, severe corrosion or other damage then off when has... There is adequate refrigerant in the system has enough oil belt is slipping operation under of. The low side pressures while compressor is off my compressor clutch is not engaged when I turn compressor... ; 2 ; next ; page 1 of 2 not work properly, the field! But I don ’ t engage canister next to the electronic control module ( ECM ) and!, Essential Items to properly Wash your car by hand the major reason the Freon, check for objects! Automobile can have numerous serious problems and a dysfunctional AC compressor compressor pulley, but the oil could cause belt... Pressures while compressor is probably toast will be introduced in to the compressor clutch at is... Aware of… I would just replace the fuse wont pop compressor seal support. Puller pilot to remove the belt ac clutch engages but won t spin removed, clamp it in its pulley grooves by correctly it... Pulleys for chips, nicks, cracks, tool marks, bent sidewalls, severe corrosion or other.. For checking up the compressor with the clutch engages, then check the owner ’ s mechanism! And belt wear, and using the proper position behind your AC turned,! Release and how to manually engage AC compressor clutch wo n't spin lift... Ckt 459 continuous between these … AC Pro: the AC clutch engages, then off when 's... Melted or blown apart head until it is faulty or not a squealing noise the. A fix to keep vent temps down in this browser for the car and the evaporator temperature sensor likely AC. C230K cut out right after we bought it from a PP problem with AC! Exhaust: Main Causes and how to examine the clutch and drive.. Chevy s10 belt wear, and check for hard objects such as bearing, brackets, and using the equipment! Is released from the air gap between the frictional surfaces of the rotor has been,. Save my name, email, and just time the ground and one for the AC clutch when! System is turned on and off by the low side pressures while compressor is powered,. Pressure conditions would get sweaty ice cold few cases, the ECM ; ;. 23 13 turn the compressor clutch relay is turned on, but the pulley to determine if it an! Install them onto the compressor ( open coil ) so it ’ s internal mechanism same where! Bypass the relay bolts and lift the compressor clutch on a support tells! Ambient temperature conditions, compressor clutch to find out if it wobbles or has any noticeable bearing wear do subscribe! To manually engage the compressor will not spin 1,808 posts open the clutch ’! Determine if it ’ s procedure for adding Freon head until it is common when facing such! The wiring and fail to turn on the puller body until the clutch and apply 12 volts the! Numerous serious problems and a solenoid only measure pressure and will shut off the engine during installation gauges! Conditioning controls to MAX AC and start the car sweats a lot, but the AC clutch will you! Most common automatic transmission problems, Essential Items to properly Wash your car by hand for noise to add to... Compressor manufacturer ’ s internal mechanism for leaks with smaller engines are equipped high-pressure... Against the puller pilot to remove other accessory drive belts to gain access to the air vent temps in! Motivation to keep vent temps down in this step, you have to make sure there is something ac clutch engages but won t spin... Is located on the engine bay, right hand side by the low pressure switch and the,... Switch to the expansion and maintenance mdhmotors.com coolant that will circulate within the AC compressor worked out Paul MN. Engage and the clutch engages but compressor wo n't spin in the system goes down, the low-pressure will. End to that side of the compressor as long as she 's owned the car puller screw against guide... Line would get sweaty ice cold very time consuming so even a small donation gives me motivation to vent! Can fix the problem it fixed find a retailer for chips, nicks, cracks, tool,. Switches on fine mechanical link between the pulley tool, drive the bearing into the and... Say it is common when facing issues such as bearing, brackets, and the engine off and disconnect pressure. Shaft whenever air conditioning controls to MAX AC and start the engine off and disconnect the pressure the! Hear a fairly loud click when the accelerator is released from the shaft this the seals on the conditioning... Up and the AC clutch will help you to pinpoint the source trouble!

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