Questions tagged [ac]

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

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673 views

How do race drivers clear foggy windscreens?

I know that, in order to decrease weight, race cars may remove AC and heating systems as these are not essential. However, when driving, if their windows get foggy due to cold weather, how do they ...
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24 views

Bad smell from AC

My 2009 Honda Fit was parked for a few months this year. Now when I use the AC, there is a bad smell. It doesn't smell like any mold that I've smelled before (although I know molds can have many ...
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GMC Envoy stalls when air conditioner is on and idling

2004 Envoy only dies when A/C is on and idling if it is in park or neutral no problem. Also will not crank after fueling once started will continue to turn over till refueling again. And service ...
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53 views

Tail pipe rattles when AC is on

I have noticed a distinct rattling sound coming from my tail pipe when I am parked and idling. After some experimenting I realized it only happens when the AC is on. If I turn the AC off it ...
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1answer
49 views

Is AC refrigerant toxic?

I’m looking to buy a small portable refrigerator to take with me on camping trips, and I’ve found one that is designed to plug into automotive power systems and can (presumably) handle the vibrations ...
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1answer
36 views

Cans of Freon Keep Breaking when Trying to Recharge A/C System with Hose/Gauge Manifold Set for GMC 99 Suburban

I'm trying to recharge my A/C system with a hose/gauge manifold (the red, yellow, blue hoses) after pumping out all the pressure in the system. The problem I have is when I attach a can of freon on to ...
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15 views

2018 Sonata - When my a/c is on it blows out sudden burst of cold air for a few seconds then back to normal

I have a 2018 Sonata that when the A/C is on it has started blowing out sudden bursts of cold air. This only last for a few seconds then it goes back to normal. It will wait maybe a minute or two ...
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12 views

Kia Optima A/C - Add oil or not after changing expansion valve and compressor control valve?

I plan to change the A/C expansion valve and the compressor control valve in my 2013 Optima. After proper vacuum, do I just add r134a Freon or do I need to add oil as well. I’m assuming since I am ...
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0answers
11 views

2015 Chevrolet Silverado AC blowing hot air?

My 2015 Chevrolet Silverado is blowing only hot air when having the AC on. Looking for possible answers what might be the problem. The compressor is working, because when I add R134a to the system it ...
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1answer
33 views

Engine vibration when A/C is on

I have a Toyota IQ 2010 model. I bought this car second hand having driven 50,000 KM. When I bought the car it had power and acceleration issues, it wouldn't even climb a small ramp. Other problems ...
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11 views

2000 Ford Excursion 5.4L 2wd

Reduced cold air flow from a/c I replaced the fan 2 replaced a/c resistor Clean ac evaporative coil in behind fan. Cleaned front evaporate coils in front of radiator Both with lye mix commercially ...
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1answer
31 views

2014 Ford Focus a/c

My partner has a 1.6TDCI 2014 Focus and all was well till the aircon stopped producing cold air. The system has gas and has no leaks, this was tested by a local garage. The issue is that the clutch ...
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34 views

2016 Toyota Corolla A/C not working

I just purchased a 2016 Corolla (15000 miles) in Feb 2020. Went to turn on the A/C and hot air comes out. Took it back to the dealer (which was a Nissan dealer) and they did a few tests and ...
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24 views

Help Finding Pin Out of 2011 Hyundai Accent Climate Control

This is a follow up from my previous question. I believe now that the issue is the climate control unit button not actually activating the AC. I changed it over the winter, so I didn't test the AC ...
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55 views

Missing fuse cause of no A/C?

2011 Hyundai Accent I don't know much about cars, so I'd like someone to tell me if this missing fuse could be causing the AC to not activate. It's already been to a mechanic, so I assume they checked,...
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17 views

2012 Cruze a/c not working

I have a 2012 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, the A/C pressure seems to be ok , and compressor seem to be running fine but ...
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1answer
29 views

93-96 Honda Civic a/c problems

Alright guys so I'm having a difficult problem with my a/c system. I'm somewhat of a mechanic so il list down things I've done to try and fix the problem. But long story short my a/c runs great in ...
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1answer
30 views

2011 Infiniti G25x: water is leaking down from the passenger glove compartment onto the floor

It was raining, and I was driving. I parked my car, and discover the water is leaking down from the passenger glove compartment onto the floor. I have recorded a video to show this problem: https://...
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1answer
24 views

2011 Ford F-150 Lariat A/C problem

A/C problems. Won’t come on sometimes only when I hit a bump. Could something be loose?
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1answer
38 views

Sad, whiny, stressed out, constipated noise when AC is on. Is it dangerous?

Another hot one today... I noticed in my Ford 5.4 v8 1998 van, when my AC is in the process of workin (like in the time between when it clicks on and clicks off), if I'm driving at certain speeds (...
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1answer
38 views

AC works better when driving than when not driving

The weather outside today was more muggy than a 20 ounce mug with a pugs mug printed on it... being acquired in a mugging incident. I mean it was hot. Hotter than a hot place. So... in my '98 Ford ...
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1answer
57 views

R134a added to car AC “upside down”

I had "help" from the manager at the auto parts store who added a full R134a can upside down "cause it's quicker" (and poured liquid into the system instead of allowing the gas to ...
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1answer
24 views

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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0answers
23 views

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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1answer
33 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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3answers
44 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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1answer
60 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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1answer
21 views

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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45 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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25 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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30 views

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
53 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
30 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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1answer
38 views

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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0answers
25 views

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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0answers
12 views

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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20 views

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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0answers
44 views

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
56 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
49 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
85 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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0answers
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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0answers
27 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
35 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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0answers
15 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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0answers
23 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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