Question about 2002 Lincoln LS

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AC blowinghot air

AC clutch not engaging, mech said the code is reading a sensor bad that tell the ac when to come on. Ford dealer says that is not a code for the car 02 LS Lincoln

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Locate wires coming from compressor clutch and trace to nearest plug that you can unplug. Turn on A/C to max cooling. If clutch not engaged (center of compressor drive pulley not spinning with pulley), unplug compressor clutch wires and use multimeter to check voltage going to compressor clutch. If voltage is around 12 volts or more, then clutch should be engaged when plugged in. Plug clutch wires back in (with motor still running and ac set to max). If clutch still not engaged, then clutch definitely bad because 12V signal should engage it.

Posted on May 08, 2010

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2003 Ford Windstar AC is not working. It only blows out hot air. The blend door act. works properly(We have already tested it). There are properly freon in the Vehicle. We are at a lost. Please help


Can you tell if compressor clutch is engaged? If clutch isn't engaged only the belt pulley will be moving and the compressor clutch is not engaged. If not engaged, no ac.

Can you check for applicable hvac codes? To check codes, your-self, at the least, you need an obd2 code reader, that will check manufacturer specific codes as well as po.

I haven't looked at your wiring, you could probably check voltage and ground for compressor, hvac on.6158ef87-8677-4b29-952a-e287698970b5.jpg
In the diagram, you see applicable fuses--clutch relay-- the top wire at ac clutch is voltage--black wire is ground.

Jun 22, 2016 | 2003 Ford Windstar

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Roaring noise coming from engine compartment


Air conditioner clutch is going bad and needs to be replaced.

Jun 11, 2014 | Ford Cars & Trucks

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Why does the compressor for the ac on my 2003 ford focus keep clicking ?


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.

Jul 07, 2012 | 2003 Ford Focus

1 Answer

Nothing happens when the ac switch is turned on, no cold air, clutch doesn't engage


Check fuses and AC relay, check system pressures with AC manifold gauges to determine system charge capacity. If it is below sensor limit on freon, the comp. clutch will not kick in. I hope this helps.

Jul 06, 2011 | 2001 Ford Windstar

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My H2 AC light just flashes and then goes out.


If the AC light does not stay on after you push the button and the air does not get cold coming out of the vents the system has a leak and has been evacuated. Once the pressure falls below a certain level the pressure sensor in the AC system tells the AC clutch to dissengage and the light on the dash will also go out to alert you that the AC system is not functioning correctly. The reason it flashes when you push it initially is that the system is trying reading the system pressure and finds none.
<br>Sgt Lumley

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1 Answer

I Have A Mercedes Benz E40 2002 AC Compressor Is Not Turning On But A Mechanic Checked It Once And Compressor Is Good And No Licks Is Founded What you Think Its The Problem?


The compressor is not turning due to the clutch is not engaged. The clutch is only engaged after a total check from the controller then a signal is generated to turn on the clutch. This is a series of sensor check to meet the requirement. It means you have to check: The refrigerant pressure switch check to make sure there is enogh coolant, The coolant sensor -if it signal too hot, clutch not engaged, The speed sensor from the back of compressor to compare the speed of of the camshaft to prevent the compressor looked up, The sensor at the evaporator, if it is bad, it senses too cold then the clutch will not engage, The sensor near the reading lights to check cabin temperature... All these make the AC repair for this car is expensive, and not any one can fix the AC in this kind of car. Don't try to find any local repairman to attempt the fix, since it ends up costing you more than what it needs to be. Good luck.

Aug 17, 2010 | 1999 Mercedes-Benz E-Class

1 Answer

My 2002 Expedition air conditioner will sometimes blow hot air and others cold air


I would check the following possibilities:
1. Is compressor clutch working? - You need to do this when the ac is blowing hot air only - locate compressor drive pulley on engine - rubber belt wraps around it. Start engine and set to max ac. When the ac is blowing hot air, look at the center of the compressor drive pulley using a good flash light - watch it for a while, it should be spinning with the pulley - this means the compressor is engaged. If not, the compressor is not engaged. If your ac is blowing hot air, then the compressor should be engaged and running (trying to cool). If it is not engaged, then your compressor clutch is probably going out. Could be low voltage to clutch, but more likely the clutch is worn out and only working some of the time. Note: if working normally, the compressor clutch will engage and disengage in cycles- but the air should always be cold. If clutch is bad, compressor would need to be replaced (sold as one unit). This is tricky to diagnose and could take some time - you need to do it when ac is blowing hot air but set to max cooling.

2. Low on refrigerant or refrigerant has moisture in it? If your ac blows cold initially after being off for a while, then heats up, and continues to regularly cycle back and forth between hot and cool air, then the system may be low on refrigerant or the refrigerant may have moisture in it that is freezing and restricting refrigerant flow. An a/c shop can check refrigerant level and even replace refrigerant if moisture is suspected.

Could be other issues, but I would start with these.

Good luck

May 07, 2010 | 1999 Ford Expedition

1 Answer

AC is not working properly


this first to do is check wiring to compressor clutch,when ac is not working check the ac clutch it should be engaged,test for power and ground at ac compressor clutch, you may have a bad wire to clutch or a bad compressor clutch,8226523.pngc97e168.giff41b56b.gif672ce29.gif

Mar 04, 2010 | 2003 Nissan Pathfinder

1 Answer

2001 CHEVROLET VENTURE VAN, service engine soon light on continuously (no problems) ABS brake light on (they do not work), AC does not work all checked out by mechanic who can't find the problem


as to abs problem have a bad sensor or sensor connection not secured to clip did mech scan for codes scanner would explain which side is setting off light ac can be any thing from no freon in line compressor wont come on to fuse/or control at dash if getting power to compressor a/c-clutch may be bad or needs more freon to engage clutch the mech should have given you the codes that set off the service eng soon

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1 Answer

Screeching noise, then a/c stops blowing cold air. Still blows air, just not cold air.


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


Aug 09, 2008 | Mercedes-Benz 400-Class Cars & Trucks

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