The a/c compressor clutch in my 2003 ford taurus will engage for a second then disengage, then engage and disengage again. The air that comes out is warm because the clutch won't stay engaged. What should I check and how do I fix it?
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It sound like it has a low charge but if you know that it is fully charged you may have a bad low pressure switch . Also make sure that the condensor fan is working properly and the system is not building to much pressure.
I assume it's because your clutch is engaging and disengaging. Could be from a loose electrical plug to your compressor coil on the compressor. It could be a loose plug to the pressure sensor or a bad pressure sensor because that sensor will shut it off if the car is low on Freon causing low pressure in the system. Could be low on Freon so it's on the edge of having enough pressure to turn it on and then shuts it down again because it dips below the pressure threshold when the compressor kicks in. Could be a bad compressor coil that engages the clutch. Maybe a loose connector to the AC Button in the car or the AC Button is intermittent. Could be an intermittent relay engaging the compressor clutch. That's a good list of what all could cause it and if you end up needing to replace the compressor, I made a video on how I did it.
have the AC tech performed a leak test on the system after recharging? is the expansion valve and filter drier as well as the o-rings for the fittings replaced? check also for possible leaks in the system in the fittings of the hose and in the evaporator housing. also check if the magnetic clutch of the AC compressor is engaged, you will hear a click when it it engaged.
yes. the ac removes moisture from the cabin of your car. if it is not engaging that is why your windows are fogging up. you need to have the ac pressure checked. you may just need a recharge.
The air conditioning compressors commonly go out on these vehicles, more like the a/c clutch, but they come as a unit. With the vehicle running (make sure you don't have anything dangling like strings from your sweatshirt) carefully look at the a/c compressor (lower right as you face the engine over the passenger side fender) it has 3 round things that protrude forward on the clutch. Watch the movement and look for erratic movement of the a/c clutch. If there is no unusual movement, the system may just be low on a/c refrigerant and a/c(refrigerant) oil, if it is low on refrigerant oil it may cause the a/c compressor to sound like a diesel engine.
Hope this helps.
There is too much air gap between the hub and pulley. Usually, there are shims under the hub to set the proper gap. If you remove the small bolt in the center of the hub, it should slide off. There should be shims that look like small washers on the compressor shaft. You may need a magnet to get them out while the unit is on the vehicle. There are different sizes available and you have to remove smaller ones to reduce the air gap. These shims usually come with a new clutch, but a dealer or parts store should be able to come up with just the shims. I just searched Google shopping and found shims available for $13-$14. You need to find a combination of them that is a few thousandths of an inch thinner than what is in there right now. A new clutch looks to be around $80-$90. I hope this helps. Good luck.
it could be the air conditioning clutch going out. to check turn your car on and idle it with ac on and hood open. at the ac compressor it will have a pulley on it with a clutch that engages when the air conditioning is on. if it engages and disengages it can be the clutch itself has gone bad, the ac clutch will also disengage if there is not enough freon in the ac system, will also engage and disengage if the pressure gets too high in the ac system. Depending on the year of the vehicle it will disengage at full throttle and come back on when you are not at full throttle.
If it is a metallic sounding screech for example take a coke can and drag it across pavement kind of sound it could be a bad compressor or a bad ac clutch. If it is a more rubbery sound for example a car spinning its tires kind of noise it could be a loose belt.
1. Check to make sure all belts are tight under hood
2. start car and look at ac compressor to make sure compressor pulley is turning and that the fan clutch is engaged spinning
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