Questions tagged [ac]

Questions about Air conditioning systems - other Heating and ventilation questions should use 'hvac'

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AC clutch plate on and off

My ac was not working so I installed a new ac pulley, clutch plate, and coil. Now it seems to be working fine again. I notice, however, that the clutch plate engages and disengages fairly regularly (...
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Blower Motor Resistor Smells Like Toaster When on Low speeds

I recently replaced the front blower motor resistor board on my 1995 Suburban. All speeds work fine, but on the two lowest speeds, I smell a toaster smell that is almost certainly coming from hot ...
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20 views

Normal AC refrigerant pressure range?

Long story short: the ac of my 2013 Rogue is not working and I am in the process of eliminating various possibilities. One of these is the amount of refrigerant in the system. Hence my question: With ...
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2answers
23 views

Nissan Rogue AC Compressor Question

I have a 2013 Nissan Rogue. The ac is not working and I am attempting to fix it by replacing the ac clutch, pulley, and coil. There is something I don't grasp about how the ac compressor works. My ...
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38 views

Is there a cheap way to recover refrigerant from an AC system

I have a car with a leaky AC and had to refill it with refrigerant in order to identify the source of the leak. My luck, the evaporator core seems to be the problem and I have to drain the system ...
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HVAC Flow Control - A/C Won't Blow Through Dash Only

In my 2010 Mazda 3, the switch that adjusts the flow control works generally, but when I adjust it to blow only through the dash vents, it still blows primarily at the feet (the adjacent setting) and ...
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43 views

What is going on in the back of my van?

I don't know what the heyl is goin on the back of my van (5.4 v8 E150 1998 conversion style)! It's a doosey of a conversion van, so you bet there is a whole separate box back there for (I think?) both ...
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AC compressor change out and recharge with gauges and vacuum [closed]

Ok I have just vacuumed 5 oz of PAG 100 into my high pressure service port of my AC system after changing out my AC compressor and pulled a vacuum and I have not added any refrigerant and the ...
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24 views

Part from my Ford 2014 C-Max?

My A/C doesn’t work - I found this under the car this morning. Are they related? Is this even from my car? Thanks for any help
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2010 Toyota RAV4 air conditioning blows warm instead of cold

Since it's a second vehicle and I don't use it much, I don't really want to spend money on a diagnosis and have been trying to research how I could diagnose (and maybe fix) the problem myself. https://...
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1answer
28 views

How much Pag oil should be added after recharging refrigerant?

I have a 2003 Citroen c5 which I bought last year, the A/c system has been empty for refrigerant since before I bought it. I have purchased the necessary equipment to vacuum, and recharge the system. ...
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1answer
26 views

Can an A/C system cool with just 20-30% charge?

So the A/C in my LR4 was never quite right since I bought it in fall. It worked, but on hotter days it barely cooled at all, but I never got round to it because I had other priorities. As fall turned ...
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Could there really be THIS massive a leak in my a/c?

I've had problems with my A/C, in particular, my compressor clutch doesn't engage. (2012 Ford Mustang, V6) I replaced the low pressure switch and even bypassed the relay to ensure that the clutch is ...
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AC Compressor Clutch makes grinding noise

The AC compressor in my 06 4runner (4wd 4.0L SR5) isn't engaging, and when the clutch coil gets power I hear a grinding sound. I tried replacing the clutch but I still hear a grinding sound and the ...
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2004 Saab 9-5 2.3t is stalling when the A/C is on… what could it be?

2004 Saab 9-5 2.3t is stalling when the A/C is on... what could it be? My mechanic added Freon and it was working ok but now it seems like the engine wants to give up. Could it be the compressor?
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Honda Accord 2002, Vehicle a/c climate button control, change with missing buttons

So I was wondering if somehow I can change the climate mode with missing buttons. So long story short, I hit my AC thing and it caused two a/c buttons to break, none of my climate mode buttons work. ...
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1answer
23 views

Is AC compressor faulty if I can get cold air on lower temperature setting but not on higher setting (e.g. 20 and 23 celsius)?

I'm having 2013 Ford Fiesta and I've noticed that when I set my AC to 23 C it doesn't blow cool air much, but when I lower the setting to 20/19 C then the cold air continually flows. Six months ago ...
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Honda Civic 2007 AC compressor clutch not engaging

Initially, the compressor clutch stops rotating at times then re-engages on its own. After a while it stoped re-engaging and I’d have to to pop the hood to manually turn it before it engages. Took ...
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32 views

Will 260F damage my engine or cause AC leak

I went mudding in my jeep. It was really soupy and coated the entire engine bay including the rad. Didn't wash off the mud and then drove downhill into town a few days later Didn't realize temps until ...
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2answers
34 views

HVAC clutch cycle

2007 3.0R Subaru Outback - the hot & cold climate air work OK. I've checked the clutch gap which is within the tolerance specified by the factory service manual. Often when climate temperature ...
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1answer
49 views

Was charging the a/c and the pump engaged but just warm air came out

Put a vacuum to the a/c then charged it. It took 1.5 of the 2.5lbs it calls for and so I fired it up and turned on the a/c. The pump engaged but the air was still warm and the pump got real hot, too ...
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1answer
34 views

2011 Hyundai Accent AC compressor doesn't kick in

I own a 2011 Hyundai which is known as Accent model in the US. The problem is my AC doesn't work, namely the AC compressor clutch doesn't engage when turned on. What happens is when the AC button is ...
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1answer
69 views

How to find out if my car AC needs extra oil and how much to top up?

My car AC has been dead for a couple of years now and I was wondering the following things: How could that affect the AC oil level? Is there anything I should be worried about considering my AC ...
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2answers
50 views

Can you visually detect an AC car leak?

I was wondering if it actually possible to see an AC leak by eye. Say one of the aluminum pipes were to leak, would you be able to see a specific type of discoloration caused by the refrigerant ...
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22 views

Kia cee'd 2007 Aircon compressor

I've got a 2007 Kia cee'd 1.4L Petrol Hatchback and the air-con compressor seems to be busted. I am having a look online and I can see quite a variety of compressor models both new and used going ...
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19 views

AC not working in 2013 Honda CRV

The air-conditioning in my 2013 Honda CRV went out about a year ago. It started going out intermittently, and then it died altogether. I’ve bought the compressor, the condenser, and the expansion ...
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1answer
27 views

Gurgling noise in car

I had a strange issue. I havent been driving much during the COVID-19 lock down, but I am not sure if that makes a difference. For 3 straight days, I made a few short trips in my 2015 Hyundai ...
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14 views

Rough RPM idle transition when AC is ON

I have Kia Picanto 2017. I noticed that when I'm driving and depress the clutch (say would switch to neutral to stop for a red light), normally the RPM should go down to the "normal" idle level but ...
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20 views

A/C not working trouble shooting

So, my Nissan Rogue 2011's A/C stopped working, I've been trying to diagnose it, the blowers are fine but it's blowing room (engine) temp air. I've checked: 10A compressor fuse(fine, 0 Ohms) The ...
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1answer
25 views

I have a 2016 Hyundai accent sport, car dies when it's idling and the A/C is on

The car runs fine otherwise, just shutters and dies if the A/C is on and I'm idling. I put in new plugs and a purge valve, but the check engine light keeps going on and off over the past year. I ...
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2011 2500HD 6.0 when a/c comes on it's only for 5 seconds

When a/c is requested it will come on for about 5 seconds and shut off. Will not come back on for about 30-60 seconds and shuts down again after 5 seconds. When holding idle at 2000 rpm and compressor ...
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27 views

A/C Condensor fan turns on when Heater is switched on

I have a Mitsubishi Lancer. I recently got the fan control module changed. However, I have noticed that when I turn the heater on, the A/C condenser fan also turns on. Is this right? I do feel that it ...
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45 views

when is a/c pressure too low

Last fall I noticed a small hiss when starting the a/c. I looked around the system and noticed a thin film of oil/dirt around the high valve. I guessed my high pressure shraeder valve to be leaking ...
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1answer
41 views

2008 Ford Focus - My AC turns on and off fairly rapidly when driving slowly or stopping

how is everyone? I have a little problem, so when the AC is turned on and while driving slowly or waiting in traffic it repeatedly shuts down and turns back on blowing normal temperature air (same as ...
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1answer
58 views

What is best pipe for automobile AC?

What is the best pipe for automobile AC Coper Aluminum Flexible hose I'm planning to install new AC for my Landrover, appreciate your advice Thank you
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A/C Compressor Clutch Not Engaging

I have a 2007 Honda Civic Si. During the summer, the AC started acting up. It would work well for a couple minutes and then stop working. I remember checking to see if the compressor was running and ...
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6answers
8k views

What is most fuel efficient at 130km/h? [duplicate]

Suppose a very hot summer day, driving on a long straight highway at 130 km/h. What is most fuel efficient solution : Driving with AC on and closed windows? Driving with AC off and four full opened ...
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Ac just stopped working out of front vents

07 holden ve Berlin a Ac was working fine in morning then all of sudden wasnt blowing out front vents after starting car in arvo. All other vents are blowing cold and hard . I changed settings to ...
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2answers
58 views

car engine (AC?) hose frosting up in engine?

A hose in the engine is frosting up (like you may see in a fridge - see image - the hose/pipe is not normally white!). Any ideas what this may mean? I've also losing some coolant in the radiation (.....
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1answer
54 views

On 2007 Toyota Camry LE route AC vents work, but 2 center vents do not dispense any air. Some air flow is seen if no AC is used

I have an air conditioning concern. When using the AC, outer vents work, but the two center vents don't dispense any air. This is a consistent issue at any level that AC system is on from low to high. ...
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2answers
137 views

Can running the heater with the A/C on damage your car?

I find that having the A/C on with the heater helps defog the car faster in the winter. Is it possible that doing this can damage the car?
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1answer
474 views

Why did my temperature go down when I turned on A/C?

My car has been running hot and I'm going to be putting in a Thermostat to fix this. However, I have noticed that when I turn on my Air Conditioning, the temperature goes down. I would expect ...
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2answers
237 views

Air-conditioning belt is making a loud squealing noise. What should I do?

How long will the air conditioner last if it is making a loud squealing noise. I want to know if I have to replace it right away.
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20 views

Intermittent heater problems

I have a 2008 Mercedes Benz auto, 2148cc. The heating and a/c have been working fine for several years, until a few months ago. The initial problem was that the cold a/c switched itself off ...
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1answer
35 views

New Radiator Fan Issues in my 2010 Ford Focus

I put a new fan in my Ford Focus the other day and the first day it didn't work so I took it to my mechanic and it's been working since he said he hasn't done anything so I'm not sure if that's true ...
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14 views

Random whirring noise comes from the passenger side of the engine - AC related?

My 2006 Mazda 3 is making a whirring noise at random and it seems to originate in the passenger side of the engine, over where the belts are. It has 193,000 miles. There are 2 other things that I ...
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1answer
25 views

Intermittent A/C 1994 Toyota Corolla

Symptoms Refrigerant is not low. I repeat - refrigerant is not low. A/C is not "freezing" up. A/C works every morning. Turn off A/C or stop and get gas after engine is running for 5 minutes and hit ...
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1answer
113 views

Engine stalling while idling (Honda Fit 2007)

I have a 2007 Honda Fit Sport. When idling (e.g, at red lights), my engine often dies. It seems to happen at least once per day. It has about 70k miles, and is in otherwise good condition. From ...
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2answers
936 views

2013 Chevy Cruze A/C not working and possibly radiator fan

I have a 2013 Chevy Cruze and all of a sudden I get in the car and there is no A/C. The fan is blowing just warm/hot air. After checking the fuses (not sure how to test relays) I did notice that while ...
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39 views

Golf sti 2016. Air con, fan won't work and heater on

Recharge battrey on my 2016 golf sti. Everything is fine but the stop/start is not working (not bothered) but a/c, fan not working and the heat is on. No lights on controls for them and can't turn the ...

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