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

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2
votes
1answer
17 views

AC Compressor running but no cold air?

I have a 2002 Honda Civic. When I bought the car, the AC compressor was unplugged. I plugged it back in and it did not engage. I checked the pressure and it was a little bit low. I jumped the relay ...
4
votes
2answers
28 views

What could cause the engine temperature gauge and AC to fail simultaneously?

On Wednesday I noticed my car's temp gauge reading at bottom while driving down the highway. The air conditioner was also non-functional. Each of these components were working fine the day before. The ...
4
votes
1answer
31 views

BMW 3 series 320D ac blowing hot air

It has recently been really hot and to my surprise on the hottest day of the year my ac was not working. I took it to halfords to get the ac recharged however when they attached the pressure gauge ...
6
votes
2answers
123 views

To Use Max AC or AC

If I understand properly, setting your vehicle in the AC setting will cycle air from the outside into your vehicle attempting to cool it before it is pulled in. Likewise, MAX AC only recycles the ...
6
votes
1answer
232 views

Why does my engine vibrate at idle only when I have the AC on?

2001 Honda Civic EX First noticed this problem when I got the car about a year ago. When the car is idling without the AC on, all is good. When I turn the AC and the clutch engages, it begins to ...
3
votes
1answer
19 views

How likely is a recently replaced AC condenser to be bad?

My fiancée was in a minor front end collision recently with enough damage to the vehicle that many pieces of the vehicle's front needed to be fixed or replaced. The weather has been heating up since ...
5
votes
1answer
26 views

Eliminating Mold/Mildew Smell from Car without Cabin Air Filter?

I have a 1998 Honda Civic LX, which didn't come with a cabin air filter. It has air conditioning but no filter, which makes no sense but that's how they supposedly were until 2001. When I turn my AC ...
6
votes
2answers
272 views

Does AC usage change based on blower speed?

As an example, my 2004 Honda CRV has air conditioning that is controlled by three controls: on/off button, blower speed knob, temperature knob. The blower speed knob affects the speed of the blower, ...
7
votes
1answer
48 views

Longer crank time

Today I noticed something strange with my car. I was at a gym studio when I turned the key and I noticed it took a few "er er"'s longer before it started. As anxious I am about my expensive toys, I ...
7
votes
2answers
59 views

Why does the Air Conditioner compressor cycle on and off even when it is hot in the car?

I have a 20 year old Subaru wagon, and the A/C seems to work fairly well except when it is extremely hot outside (> 100 F / 40 C - which happens a lot in the summer here). What I wonder about is that ...
6
votes
2answers
84 views

When idling, AC does not work and engine overheats. What's the cause?

I drive a 2013 Chevy Sonic. Basically, the air conditioning does not blow cold air if the car is idling, only when in motion. It seems to blow the coldest during long periods of driving fast, such as ...
3
votes
0answers
17 views

2000 Buick Regal Heater/Air Malfunctioning

Background I have a 2000 Buick Regal. The Heater/Air Conditioner runs erratically. Sometimes when set for air conditioning it will blow hot air out on both passenger and driver sides, sometimes ...
3
votes
1answer
19 views

AC Compressor Working?

I have a 2005 Subaru Legacy GT. The AC pumps a little cold air and then blows only at room temperature. I understand there are two sides to an AC system (high and low) and that the exchange valve ...
7
votes
1answer
518 views

How do A/C professionals dispose of refrigerant?

The ubiquitous advisories and legislations against releasing A/C refrigerant into the atmosphere are well known - if you need to discharge R-134a or R-22 from your A/C system, have the gas evacuated ...
6
votes
1answer
178 views

Does a constant blown fuse always indicate a short?

My wife was driving our 96 Ford Windstar recently and she said right after she hit a bump in the road the ac stopped working and the instrument panel lights went out. I found the fuse from the wiring ...
4
votes
1answer
47 views

2002 honda civic a/c not working

a/c and re-circulation light stay on my 2002 Honda civic.The only way the compressor will come on ,is by grounding relay,then it blows ice cold Relays are all good.There is power to the compressor ...
0
votes
0answers
14 views

2010 malibu ac stops cold air and temp Guage drops

2010 malibu. At random ac stops blowing cold air. Still blows but not cold. At the same time the temp gauge drops to the bottom. It can work for a day fine then suddenly do the same thing. I've ...
3
votes
1answer
65 views

Air conditioning only makes cold air at idle

I need help finding why my car's air conditioning (2011 Ford Mustang v6) is only blowing cold air at idling and not while driving on the highway when it's 100°F here in Nashville. In the mornings ...
4
votes
1answer
343 views

Will cold air blow if A/C Clutch doesn't engage?

My 2001 Honda CRV is blowing cold air in the front seat, but in the middle of the summer in the back seat, it's not very cool. If the A/C Clutch isn't engaging, will the A/C still blow somewhat cold? ...
1
vote
2answers
36 views

AC Blowing Heat

I have Honda Accord 2002 SE. Today my a/c was blowing not as cold as it used to be, so I checked refrigerant level. It was high in red and I decided to discharge it pushing on the high end port. ...
2
votes
1answer
15 views

Easiest way to find a refrigerant leak on a 1999 Olds Intrigue [duplicate]

I had the level of the refrigerant checked and it was low, and the guy i bought the car from said he hadn't driven it in over a year, so I bought a can and filled it up. Air cooled off a bit then ...
1
vote
2answers
28 views

ac issues with 2005 pontiac g6 3.5L

I've put freon in it using one of those el cheapo guage from walmart. After having a mechanic recover what little bit of freon was left, I hooked up to the low side port and immediately the guage went ...
5
votes
1answer
62 views

Seemingly poor A/C efficiency in Chrysler Town & Country

I feel like the A/C in my 2012 Chrysler Town & Country is under-performing. So, I measured the A/C temperature output on it and my 2003 Toyota Corolla, and I'm having trouble reconciling the ...
9
votes
6answers
3k views

Using sunshine to cool down the car

Why can't the sunshine (that turns a car into an oven) be used to run the aircon? Or at the very least, a fan? For example - a long thin fan that fits into the top of the window - preventing it from ...
24
votes
1answer
2k views

A/C loses chill when turning on blower. Why?

Following the guidance from this Q&A, I measured the output temperature of my 2012 Town and Country A/C. Under the test conditions proscribed, with outside temperature of 87°F and 55% relative ...
7
votes
1answer
59 views

Does R-134A refrigerant normally have oil (liquid at room temperature) in it?

Upon [legally] releasing some pressure from a car's (model year 2000) over-charged AC refrigerant loop that uses R-134A refrigerant, some of the released fluid surprisingly stayed liquid at room ...
3
votes
1answer
20 views

2002 Mazda B2300 compressor trouble

For a while when I would first turn on the car and the AC, the wheel on the compressor did not start spinning immediately. The air is blowing in the car, but it is hotter than the ambient temperature. ...
2
votes
1answer
16 views

A/C clutch 2000 grand marquis is leaking

So I just changed my blend door actuator because my car would continuously blow really hot air and my boss said that could be the problem. After I changed it, put everything back together I added one ...
8
votes
1answer
226 views

What temperature should the A/C blow?

The A/C output temperature on my 2012 Chrysler Town & Country feels diminished, especially in the rear seats' A/C vents. So, I had the refrigerant drained, measured, and topped off (dealership did ...
4
votes
2answers
54 views

A/C Cycles On and Off in '02 Honda Civic

I've searched around and found questions that may be related but aren't quite the same problem as what I have, so I'm hoping you can give me some advice. I have a 2002 Honda Civic Ex with 185k miles. ...
4
votes
1answer
44 views

99 Corolla blower motor noise - possible cause?

I'm looking for someone to validate or disprove my opinion. Here is a video of the issue. https://www.dropbox.com/s/fjs8xtu0v9ikuov/IMG_3947.MOV?dl=0 The prior owner was a smoker and used in-vent ...
5
votes
1answer
48 views

The ac clutch kicks on and off in sync with the radiator fan. This is definitely not right. Whats wrong?

The clutch on the AC compressor and radiator fan seem to kick on and off at same time with a 2 to 3 second delay. I suggested maybe a relay fault or a faulty connector. Please help, mom has dialysis ...
5
votes
2answers
164 views

Cannot pull a “deep” vacuum on AC system

For reference I'm working on a 1986 Corvette at about 5,000 feet above sea level (I'm in Colorado). The outside temperature is about 80 degrees, and humidity is relatively low. The old R12 system had ...
1
vote
1answer
30 views

2009 Ford Ranger heater Blend Door

My heat blend door actuator burned out. I bought a new one. I installed it but the blend door only moved a fraction of what it is supposed to so I disconnect the actuator to not burn it. My question ...
3
votes
1answer
24 views

faint whining sound coming from air conditioner

My wife has an '05 Honda Element and when we turn the A/C on there is a very faint whining sound. The sound is not constant, it goes on and off and you have to listen closely to hear it. The A/C is ...
1
vote
2answers
77 views

Failure in A/C compressor due to flood?

I've changed my car (Brazilian GM Classic) oil and after the change the A/C stoped working. I've asked for the car dealearship I've changed the oil to check it up. The diagnostic was that the A/C ...
4
votes
1answer
180 views

What is this odorless water dripping from passenger side of car? [duplicate]

I have water coming out of a pipe under my 2010 Renault Grand Scenic. There is not a smell to it. The water is coming from the passenger side and it is dripping from a wee rubber pipe.
4
votes
0answers
279 views

2006 Jeep Liberty - AC clutch won't engage

The AC clutch on my Jeep Liberty 2006 won't engage. Here is what I have checked so far. Fuse 14 in the passenger cabin 21 in the engine compartment are ok AC relay ok When I jump the AC relay I ...
0
votes
0answers
37 views

AC blower not working

In my 2008 Prius the AC blower suddenly stopped working today. I checked the power source and all the fuses are good and the current is steady at 12v when the power is on. However, once connected to ...
1
vote
1answer
62 views

Coolant leak after AC recharge

Went to recharge my AC system on a 2000 Acura TL, the pressure gauge showed the pressure being on the line of "empty" and "filled", put some refrigerant in and the gauge didn't move at all put more in ...
4
votes
1answer
70 views

How to clean the mold inside the A/C drain hose?

I have a Toyota Corolla 2013. I know you can probably blow air or use a pen to clean the end of the A/C drain hose from underneath the car, but how can you clean the hose of the mold? Is there a safe ...
9
votes
3answers
570 views

What can I do to prevent my air conditioner from smelling moldy as the temperatures begin to rise?

What can I do to prevent my air conditioner from smelling moldy as the temperatures begin to rise? Every year someone I know or myself begins to get an odor from their air conditioner that's musty or ...
6
votes
1answer
238 views

Is it bad to mix different refrigerants?

I'm mainly wondering about different brands of refrigerants. In other words, mixing one brand of R134a with another brand, not mixing R12 and R134a (or anything like that).
6
votes
1answer
180 views

Does turning fan speed down affect AC compressor load

When I have my AC running, and I turn down the fan speed, does this also change the load the AC puts on the engine? Since the compressor puts load on the engine, and reduces fuel economy, I am ...
2
votes
1answer
49 views

Lexus HS 250h car; a/c noise from inside the car

I am getting these kind of noise https://youtu.be/QhmK7oDX1tE Any idea what's wrong? Car details Year : 2010 Model : Lexus hs250h Its happening when I switch AC/Fan on and it last for 30 sec and ...
3
votes
1answer
45 views

Will I damage my car if I don't fix evaporator core leak?

Pretty sure my evaporator core has a leak, super expensive to fix. Can I just charge it 3 times a year or so? Is this going to damage my car?
16
votes
2answers
1k views

What are the dangers of refilling your air conditioner yourself?

Both of the Haynes manuals for my cars list refilling the refrigerant in your car as a do it yourself procedure. Both vehicles use R-134a refrigerant and the manual shows them being recharged with a ...
7
votes
3answers
179 views

How do I fix my Heater & A/C in my car, suspect vacuum problem?

I didn't see this question asked after a search so I thought why not. I have a 97 GMC Sonoma with 90k miles that I barely drive. Since the hot summer is coming fast I went to use the AC and I am ...
5
votes
0answers
28 views

Mercedes CL500 Water pump & AC

I am no mechanic and do not have any mechanic knowledge etc and would like to hear from experts here regarding an issue. My query ... On a Mercedes CL500 (2002 model) the water pump, idler pulley &...
6
votes
1answer
105 views

2010 TDI Jetta Strange A/C Pressure Readings

I recently replaced the compressor and dryer at the suggestion of a nearby shop. I've charged the system and the high side reads a solid 100psi the low side cycles between 70 - 110. Cycle time is ...