2000 Explorer Sport with 4.0L SOHC engine. When I turn on the A/C the clutch on the compressor cycles off and on every 10-15 seconds. The A/C cools and the gas charge is checked as OK. Is this normal?
View 1 RepliesHe has a 96 explorer and his ac compressor clutch was cycling on and off. So he went and bought 2 20 ounce cans of 134a and proceeded to add it to the evaporator service port. Of course a lot of it sprayed out side of it as it did not fit well (duh). So he has no Idea how much he actually got in there out of the 30 or so ounces he dispensed. He is laughing at himself with me on this. He says hi ahead of time
I have access to good gauges and a reclaimer and vacuum as I work sometimes for a residential ac guru. So what to do? I was thinking the evaporator should be changed out but I want a second opinion. Then vacuum and add new 134.
I just picked up a 97 F350 with a 460. When the air is turned on, the compressor cycles on and off. It only stays on for two, maybe three seconds, then is off for about fifteen seconds. I have one of those of those hokey gauges on the refill can, and it says the pressure jumps when the compressor comes on. Could it be going out on a hi head pressure kinda thing? Could the orifice be clogged? I'll have the freon pulled out, then can get into it....
View 5 RepliesSays A/C Compressor Clutch Circuit open. A/C blows hot air....go to VENT and the EATC controls the temp fine (ambient air only). It's on a '97 Lincoln Mark VIII if it makes any difference. Pulled code # 1530 ...
Clutch does not engage but the compressor does turn. Also the EATC will NOT go into the test mode. Push OFF and Floor at same time, then AUTO within two seconds. Nothing. Is this a clutch gap problem? New clutch was installed about a year ago.
In my 08 Expedition I notice the a/c compressor cycles on for 18-25 sec. then off for about the same. This is with an ambient temp of about 75f. A/C seems to be blowing cool air-never was really cold since new. The idle drops/surges a bit when the a/c kicks on also-which is what grabbed my attention. Is this a normal or is it short cycling?
View 1 RepliesI have a 1998 Explorer XLT V6 (4.0 SOHC) with an AC problem. The AC compressor will not turn on via normal means - turn to AC or AC Max, rotate temp to left. It hasn't been a problem as I never use the AC, but I'm fixing a few of the minor inconveniences (dash lamps, re-solder radio) and figured, why not look at the AC too.
A while back my mechanic said he used the Explorer to test his AC equipment and made sure the Freon was good. He said everything was working. I am assuming he was able to control the AC system from his tools under the hood. This tells me the system is good and the problem is related to the temperature control or a switch somewhere.
The clutch is on 2 seconds and off 2 seconds, and there is a click up on top that clicks every 2 seconds ?..........no cold air either.
View 12 RepliesI have a 2002 Ford Explorer with AC that is not cooling. The AC clutch engages, then cycles off and repeats the process over and over. With a gauge on the low side port, the pressure rises to around 65 psi when the compressor is off, then drops in seconds down to nearly 10 psi. Does this indicate low AC pressure? I have always seen the pressure pretty much stay static at a certain pressure....haven't ever seen it fluctuate like that from low to high as the compressor kicks in and out.
View 2 RepliesMy wife has a 2010 Explorer 4.0 with 46000 miles on it. Yesterday the compressor started making a grinding noise when you turn the defrost on. It's only when the clutch kicks in. I'm hoping its something simple but, I fear its not.
View 8 RepliesI have an issue with my 2003 golf 2.0 ac I've done everything that I cloud thing of to check but I still have this issue so here it is. The air coming out of the vents is warm, compressor Clush turn on but doesn't kick off. I hook up ac gauges and it reads 70 on low side and 155 on high side with an ambient temperature of 80. The system has freon, I check fans and they are on when compressor kicks in all relays and fuses are fine.
View 8 RepliesHow often should my A/C clutch be cycling when the compressor is being used. (i.e defrost, mix, a/c and max a/c). My clutch never cycles, it starts spinning when I turn something on and it does not shut off until I shut off the a/c. The truck is a 95 F-150 4.9L 5 speed...
View 14 RepliesI have a 99 f350 7.3 diesel. The AC clutch cycles on for 3-4 turns and then off for 45 sec. It the does it again. The low side starts to cool down and then the clutch quits. as the truck warms up the clutch quits completely. it will restart for a few times if I push in on the elec conn on the ac clutch. My Ac has quit cooling and summer is almost here.
View 1 RepliesThe ac compressor on my 2003 vue cycles rather quickly after operating for several minutes. The ac blows cold inside and stays cold. When I first turn on the ac, the ac compressor stays running while the vue cools down but after several minutes of operating the ac compressor begins to cycle a few seconds on and a few seconds off. Seems to me it is cycle too frequently?
View 30 RepliesJust rescued this 2004 from a driveway death. While checking out a no A/C condition I notice that the A/C compressor cycles on for about 10-15 seconds then stops, does this 4 times and then ends. System shows low pressure but doesn't run long enough to build up any. Need to get the OBD-2 tester on it.
View 1 RepliesThe AC compressor on my 97 Quest cycles off and on way too fast when my defroster's on. I know the AC is supposed to dehumidify the incoming air - but it shouldn't be this rapid. Is there a way to control this or shut off the AC when the defroster's on ? 97 Nissan Quest..
View 2 Replies2002 - f250... I originally posted this issue in July of '03. Nothing has changed.
1. At max ac, regardless of how hot it is, the ac clutch cycles due to low pressure once the cabin temp reaches about 78 degrees. This is not acceptable or expected in my opinion.
2. I have run extensive tests, done this for years, and the conclusion is that there is too much pressure drop in the evaporator. I'm seeing 5-7 psi drop measured using a Fluke digital temp probe, insulating the probe tip around the pipe. Compare outlet of orifice tube several as far away from orifice as possible and comparing to outlet temp of evaporator where it comes out of the plastic shrowd. Convert temp to pressure.
I've seen many posts over the years of people not happy with '99 to '04 ford truck ac operation at cruising speed. I have confirmed that the compressor is cycling way too much to cool the cab down. I even ran an experiment where I completely blocked the condensor to raise the head pressure and the compressor still cycked at 1500 rpm's with the cab above 75 degrees on a 90+ degree day.
My next step is to blow out the evaporator and see how much oil and junk I get out of it. I'm also considering taking the evaporator out and trimming the rubber gasket that is around it. It is blocking about an inch of the coil face all the way around.
My conclusion still is that the evaporator just isn't loading up enough as if it's partially clogged. There is only about 2 psi drop between the outlet of the evaporator and the compressor.
The compressor cuts out at 21 psi so the low pressure cutout switch is working properly.
What should I use to flush the evaporator out? Will mineral spirits do it as long as I blow it out real well and make sure I get all of it out? Also wondering if I should blow out the condensor thinking maybe there is something clogging it up.
In spite of some folks on this forum saying it is normal for the compressor to cycle at cruising speed, that is a correct statement depending on many factors. In my case, the cycling is not normal or expected. I have also tried:
1. VOV
2. Larger orifice
3. 14 oz charge over what the sticker says
When ever the car stops at a traffic light or stop sign, the air compressor cycles rapidly and the cool air turns warm. I was told the cooling fan was not coming on, but the other day the fan was cycling and the cool air stayed cool. My question is what controls the cooling fan operation? It seems the high pressure switch is working correctly and the fan motor is working. As long as I'm driving the air is cool.
View 2 RepliesI have a 2004 Honda Element and when the AC compressor cycles on it makes a high pitched noise similar to a drive belt slipping. The AC is still cold and the noise is not overwhelming (yet). I know this vehicle has a serpentine belt and that doesn't appear to be making any noise. The only noise is when the compressor is running.
Is there a belt that drives the compressor (other than the serpentine)? And, is this something that I should get fixed ASAP or can it wait until my next oil change? Meaning, if I wait until the oil change (under 1,800 miles) will hurt anything?
So clutch doesn't engage and compressor is not running. I have 12-13v at the low pressure switch and the same at the high. When I jump the low pressure I don't get any voltage at all at the plug that controls the relay for the clutch.
Where I'm confused is:
Is this a low pressure problem - gauge is reading 60psi on the accumulator
Or
Is this electrical somewhere?
I just picked up a '94 7.3 IDI Turbo, and I can't figure out what ails the AC. It appears that there should be enough refrigerant (according to my recharge kit), but the compressor clutch will not engage. I have checked the fuses, and all are fine. All other HVAC functions are normal. Is there a way to test the compressor?
View 5 RepliesI have a 2002 F250 on which the AC compressor clutch is not cycling: I have checked and added coolant so low pressure is correct (don't have high pressure gauge). I checked the clutch air gap and it is at 0.030 " as specified in another post. I replaced the low pressure AC cycling switch (on the evaporator/dryer). With the AC on, I disconnected the AC cutoff switch and the clutch disengages. This circuit has the correct (>10V) going to it. I am thinking it could have something to do with the AC relay.
When you switch the ATC to a setting other than AC or Max AC, the clutch disengages fine. I noticed this problem because the AC shuts off when it is really hot, after I have been driving for a long while, about 1 hour or more. If you shut off AC, wait a few minutes, then turn on it works fine.