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Questions tagged [ac]

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

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2 votes
1 answer
67 views

Heat Pump vs. Air Conditioning -- Especially in EVs

My understanding is that a heat pump (as a heat source) is essentially an "air conditioner running backwards" -- given that, and since air conditioning is an (almost) universal feature in ...
1 vote
1 answer
2k views

AC compressor noise only when car is hot

I recently noticed that my car is making a consistent noise when AC is engaged. Furthermore I found that this noise occurs only when car is hot. Belt doesn't seem to be slipping. Car is 16 Subaru WRX....
1 vote
1 answer
81 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 ...
1 vote
1 answer
183 views

A/C clutch spins but doesn't engage compressor

A/C clutch rubber blew out on my last a/c compressor so I replaced the compressor and had the system recharged. Now the clutch will start spinning when a/c is turned on but wont engage the compressor. ...
0 votes
1 answer
224 views

Fairly new, newly-charged compressor keeps cycling on and off

2005 Mazda 3, A/c compressor and condensor replaced less than two years ago. Last summer I noticed the A/C keeps cycling on and off repeatedly. I have had the unit charged, emptied, charged again, ...
0 votes
1 answer
221 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 ...
1 vote
3 answers
913 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 (.....
0 votes
1 answer
33 views

2000 Buick V6 want to remove the air conditioner

I want to remove the exterior air conditioner parts from the motor because it’s in a convertible (compressor/radiator/hoses). Do I need seal the hose or anything else to worry with ?
1 vote
1 answer
88 views

2004 Mazda 3S A/C cuts off when accelerating

My 2004 Mazda 3S 2.3L Hatchback A/C has recently started cutting out when you accelerate. When its idling A/C works fine. When I say cut out I mean the compressor cuts off and on while accelerating ...
0 votes
3 answers
9k views

2015 nissan sentra- a/c only blows cold at highway speeds

I have a 2015 nissan sentra. When i first got it in 2015 it had one of the best ac systems i had ever had the pleasure of using, like too cold in 105 degree heat on the minimum setting. Then after ...
1 vote
1 answer
37 views

Mechanical checklist before roadtrip

I'm planing to make a 4 day long road trip throughout Europe beginning in Scandinavia all the way down to Spain in the middle of summer and need some car advice. I've driven around with a small ...
2 votes
1 answer
478 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 ...
0 votes
2 answers
53k views

White smoke coming out of vents

Yesterday I was driving my 97 Accord down the highway with the air conditioning turned on. It started raining heavily for a little over 5 minutes, and then the rain stopped. Suddenly, what appeared ...
1 vote
1 answer
329 views

Freon leak around dryer -Honda Accord 2000 SE

after I turned A/C, engine room started smoking and it turned out it's coming from the leak around the receiver/dryer of A/C. There are two pipes to it. unsure which is high or low but I tried to ...
5 votes
1 answer
10k 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 ...
1 vote
1 answer
157 views

Ford Ranger 2008 AC works only on recycled air. Help?

I noticed my Ford Ranger was only blowing hot air when set to bring in outside air, regardless of the temperature outside or what my climate control is set to. I noticed (by accident) that if I turn ...
1 vote
1 answer
87 views

Corolla RPM moving down (shakes) when AC on

I have 2018 Corolla XSE at 55000 miles. I recently started driving long range on highways and using the AC constantly. I noticed that when I come to red light/stop, RPM Lowers down than normal, and ...
5 votes
3 answers
981 views

'07 Escalade - AC issues

2007 Escalade AWD. Yesterday, I noticed that the air conditioning keeps turning on and off. To clarify: the control unit does not indicate that it's turning off. I still have the fancy snowflake ...
2 votes
3 answers
184 views

Broken AC drain fitting

2008 Toyota Matrix with a broken fitting where the ac condensation drain hose attaches to the evaporator housing. Not being able to run the ac in Texas in the summer is suboptimal, but I'd rather not ...
0 votes
1 answer
61 views

I have a 2012 dodge journey and the a/c has to always be on and I wrecked the a/c condenser and radiator what do I need to refill for the a/c to work

I'm trying to fix my 2012 dodge journey I hit a boar and dented the radiator, the radiator fan, and a/c condenser all of the fluids drained out on the count of the crash and I'm trying to fix the a/c ...
1 vote
1 answer
224 views

2005 Silverado AC Diagnosis

I just bought a 2005 Silverado with 160k miles and I am trying to diagnose the AC system. Most of the time the compressor never kicks on and so it blows warm air. Occasionally the compressor does kick ...
2 votes
2 answers
2k views

Rumble when turning engine off with aircon on

I have a 14 plate Fiesta - the air conditioner in the car seems to be linked to the main air intake so if you turn the aircon on it sounds like the fan is working really hard (which I guess is because ...
1 vote
2 answers
13k views

How to fix air-conditioning in 2008 Honda CRV

I have a 2008 CRV and recently the air conditioning stopped working I have already tried replacing the relay thinking that might’ve been it when I turn the air-conditioning on I can hear something ...
2 votes
1 answer
1k views

2003 Toyota 4Runner blinking a/c light - hot air

Blinking A/C light on my 2003 Toyota 4Runner. Must have a slight leak, I would add refrigerant from a can and be good all summer. This year although I replaced the A/C relay the a/c light on the dial ...
2 votes
2 answers
474 views

After Change Evaporator had hissing sound from AC vent

I have Mitsubishi Outlander 2016, I have cooling complaint So, I took to garage the technician checked and said there is leakage in evaporator have to change. After changed the evaporator while AC on ...
4 votes
1 answer
2k views

One side of 2015 VW passat gets cold air and the other side hot

Good day, I have a 2015 VW Passat. TSI engine 1.8. In the defrost duct on the instrument panel flap adjust motor is down in the open position. This is causing frost on the outside of the windshield....
0 votes
2 answers
74 views

A/C malfunction

What could cause the pipe out the compressor of the car to be too hot, I mean too hot to be touched with a bay hand, while the pipe after the condenser is slightly warm or rather normal.Then I noticed ...
2 votes
2 answers
159 views

Ac in van is blowing hot air but condensation is dropping

Is there a reason why condensation would be dripping from a van that isn't blowing cold when the AC is set to Max and recirculate? It's a 99 Chrysler Town and country. It is a manual temp control unit....
0 votes
1 answer
12 views

2016 Traverse-OBDII readiness check

My air conditioner does not come on because I have a pin hole in the rear line. Will this affect performing a cycle to get the sensors to read
1 vote
1 answer
137 views

AC compressor replacement

I replaced my AC compressor and wanted to know if I can run it without haveing the AC on.........I replaced the AC compressor myself and need to take it to get vacuumed. I wanna know if I can drive it,...
1 vote
1 answer
153 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?
0 votes
1 answer
64 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 (...
1 vote
1 answer
106 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 ...
0 votes
1 answer
64 views

A/c gauge temp doing weird. Sky coupe gt 350

I have a gt350 coupe and I know when I am parked with the a/c on it will overheat in an hour, so I need to turn a/c off. But this time while driving the temperature gauge started going down, not ...
9 votes
4 answers
8k 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 ...
0 votes
1 answer
531 views

Dash AC does not blow e350

I have a Ford e350 van that does not blow out the dash vents but bows in the rear. The AC compressor is engaged. If I have the rear AC off and the front on (not blowing of course), I can get it to ...
0 votes
2 answers
115 views

AC quits after ~15 mins

I have a 2007 Honda CRV and after about 15 mins the AC will stop working. Before the AC will start to work again, the care must be turned off for a few hours. Took it to a car shop to have it looked ...
1 vote
2 answers
96 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 ...
3 votes
2 answers
458 views

Can power steering groan be caused by load of AC compressor?

Car: BMW 2007 530i (N52 Engine) 210,000KM Details: Single accessory belt for AC, Power Steering, Alternator AC is clutchless variable displacement Tensioner and idler pulley's replaced Problem: ...
0 votes
1 answer
1k views

Why does my car AC vents blow hot air when AC is switched off?

I bought a new car in the month of April 2019 but from the past few weeks, I have been experiencing very very hot air coming from all the vents. The temperature is high to an extent wherein it ...
0 votes
1 answer
45 views

Strange rattling/ticking noise at 90-120+kmh

I have a 2008 Chevrolet Caprice similar to the Holden caprice and also the G8 and also the PPV ect. There’s a ticking/rattle noise from the car when the car reaches a speed of 100+kmh. If I’m sitting ...
2 votes
1 answer
153 views

AC compressor clutch snap ring holes covered up by something

I'm trying to get the snap ring out of the AC compressor clutch but the holes on the snap ring are covered up. It seems to come from below the holes and protruding out of the holes. I am leaving ...
0 votes
1 answer
97 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 ...
0 votes
1 answer
121 views

Broken wire connector

The plastic part of the plug that my ac clutch connects to is broken. I cant get it unplugged. Im trying to change ac compressor in 04 kia sorento. I need easiest way possible to fix this
0 votes
1 answer
79 views

Car stalls when ac compresser is plugged in

I have a 2002 buick century with a 3.1 the car stalls while driving when the ac compressor is plugged in but when I unplug it the car runs fine can anyone tell me why it would do that.
0 votes
1 answer
155 views

'04 Ford Escape A/C is blowing ice cold air while driving but not idling

I own a 2004 Ford Escape V6 2wd, that has good R-134 refrigerate levels, blows ice cold air while driving or when A/C has been turned on while idling (ex. Like sitting in a parking lot) but once it's ...
1 vote
1 answer
124 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 ...
0 votes
2 answers
180 views

Ac noise 2006 Honda pilot

I have a 2006 honda pilot I've put the can of recharge in my ac itll get cold but when I cut the car off you hear a hissing noise coming from the glove department what can it be?
1 vote
2 answers
78 views

Does my refrigerant recovery machine have a leak if the vacuum is lost over several hours?

I'm attempting to do some DIY car repairs from my driveway, and need to remove the vehicle's AC condenser. To do so, I need to evacuate the r134a refrigerant from the AC system. Apparently it is the ...
1 vote
1 answer
59 views

Clutchless AC compressor ( ECVDC ) driving with no gas?

These externally controlled variable displacement compressor's dont have a clutch and the internals are apparently always moving. Whats to stop (does) it just damaging/destroying itself if the system ...

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