Questions tagged [ac]

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

149 questions with no upvoted or accepted answers
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5
votes
1answer
511 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 ...
5
votes
1answer
9k 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 ...
4
votes
0answers
83 views

Replacing/upgrading from R12 to R134 system in 71 C10

I am upgrading to R134 in my 71 C10. I have a re manufactured compressor to use R134, I have replaced the POA valve, in the process I have replaced the o rings. Looking at the new POA valve (Old Air) ...
4
votes
1answer
951 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....
4
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0answers
105 views

2014 Toyota Matrix: inadequate AC

I bought my car in November 2014 and from day-one the AC doesn't seem to work very well. In the winter when it's set to defrost the windshield, there is a lot of fog build up on the glass, and the air ...
4
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0answers
130 views

Highest Fan Speed on AC/Heater Blower no longer works.

I've found a couple of posts here about blower fans that only operate on high speed, but the issue I'm having is the opposite. All of the fan speeds work except for the highest speed (really the only ...
4
votes
0answers
2k views

AC suddenly stopped working?

After few hours driving in town with a lot of traffic my AC was working fine, keeping low temperature inside. Then I had to stop the engine for few minutes and when I turned it on, although the AC ...
3
votes
0answers
573 views

2014 Hyundai Tucson cooling fan not running

So our 2014 Hyundai Tucson (GDi) cooling fan doesn't seem to come on when it's hot or when the ac is on. The ac only blows cold when the car is moving and the car sometimes overheats when idling. I ...
3
votes
0answers
36 views

2006 Matrix air conditioning fan changes speeds when set at high, but air flow seems the same?

The fan set at high sounds like it fluxuates in speed, but the air flow seems to be the same? Have had checked at dealer. They replaced fan, but still have the problem! They do not know what is wrong....
3
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0answers
439 views

ac only works on high

Last year I changed out my father's 2003 Dodge Ram van's blower motor resistor after hearing complaints about his AC only working on high. I did some googling and found that many people pointed ...
3
votes
0answers
62 views

Finding Replacement AC Condenser

I inherited a 1984 Toyota pick-up from my father when he passed 25 years ago. The AC Condenser is leaking and needs to be replaced. Toyota no longer makes the condenser, and I have been unable to ...
3
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0answers
106 views

2004 Ford Ranger heater stopped working after repair

I had my AC repaired by the Ford dealer. They said they investigated the whole system and only found it was low on refrigerant so they recharged it and everything was great... Except now my heater ...
3
votes
0answers
424 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
0answers
119 views

2010 Volvo S80 - Cabin HVAC system schematics

Something in my sedan's cabin air system smells bad (organic bad, not mechanical bad), even after changing the cabin air filter. I have a bore scope, vacuum, compressor, and hoses sufficient that I ...
3
votes
0answers
268 views

Inverting the A/C VSV Switch

I bought a 2E Carburetor for my 4G13 Engine. My Problem is that 2E Carburetor Idle Up A/C Vacuum Actuator needs vacuum when the engine is on and when the A/C is On, the idle up vsv will be Off (or no ...
2
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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 ...
2
votes
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 ...
2
votes
1answer
41 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 ...
2
votes
2answers
1k views

A/C stops blowing cold when it's raining

I have a 2011 equinox. Had a accident couple years ago involved with front end. Ever since then when it rains my AC will stop blowing cold air. never heard of anything like this. anyone have any ...
2
votes
0answers
90 views

Why may heating gradually stop after some time driving (and doesn't work in passenger side at all)?

This is a somewhat strange problem. Heating (in driver side) seems to work normal - after somewhere between 15-25 mins. driving or so, it gradually stops working. The warming in passenger side doesn't ...
2
votes
0answers
35 views

Missed a connector in my AC system?

I just changed the heater core in my 1999 Subaru Legacy Outback. I had to take the dash out, and disconnect many connectors. After putting it all back together, my heat now works (yay!), but my AC ...
2
votes
0answers
62 views

Clunk sounds in rear when A/C engaged - 2006 Subaru Impreza

First off, I don't have much experience with cars. I've googled the issue and have come up empty. I've got a 2006 Subaru Impreza Wagon with 170,000 miles. In the last month, a clunk has been ...
2
votes
0answers
351 views

A/C Air Recirculation

In my 2017 Toyota 4Runner I'm interested in a solution to keep recirculation on by pushing a button even when the defrosters are on. In other words, a wire to override the defrosters so recirculation ...
2
votes
0answers
4k views

AC clutch engages no cold air, equal pressure across lines

I recently took my Honda Accord to the mechanic and it was found that there was equal pressure on the high and low side AC lines (around 90 psi on an 80°F day). However the clutch was still engaging ...
2
votes
2answers
133 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....
2
votes
1answer
786 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
2answers
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 ...
2
votes
0answers
855 views

I have a 2008 Mazda 3, and it's not blowing cold air

I have a 2008 Mazda 3, and during the winter, we had a few warm, wet days, and I tried using the AC, and it wasn't blowing cold. So now that spring has sprung, I'm looking to get this fixed up. So ...
2
votes
0answers
38 views

A/C working but engine overheating

I have a 2004 Chevy 2500 6.0 and the AC compressor belt was not on when I bought the truck, so I put one on today and it worked great until I was parking, the dash said "Engine Coolant Hot" and ...
2
votes
0answers
265 views

Air conditioning hisses, but gauges show pressure, no cold air

So my 2010 VW Routan's (basically a Dodge Caravan) AC has gradually stopped working. I figured I had a small leak and it finally just didn't have enough juice to cool. I have a set of gauges that I'...
2
votes
0answers
25 views

Battery problem for paddy harvester

My harvester vehicle is Claas make. Model Crop tiger 40. I locally fabricated AC cabin for this vehicle. After AC installation, if my vehicle run one day in AC next day morning it is not getting self ...
2
votes
0answers
51 views

Can I add a rear evaporator in place of my rear heater for my passengers

I live in a hot climate. I do not need heat to my rear passenger feet. Can I run A/C pipes instead of hot water and replace radiator with an evaporate. The Vehicle is a 1988 Toyota BJ74. The blower ...
2
votes
0answers
557 views

Clicking noise when stopping and accelerating. AC issue?

I drive a 2014 Corolla LE. Whenever I accelerate or brake, I get a tap or a click from within the dashboard near the center vent area. It happens when... I accelerate from a stop. I just tap the ...
2
votes
0answers
57 views

97 ram ac problems

ac did not work. so I opened up the system and found there was no orifice tube. I bought one, put it in and pulled a vacuum. added 134. it worked fine for a while. then it slowly quit. opened up again ...
2
votes
0answers
398 views

2003 Dodge Ram AC malfunction

2003 Ram 4.7L Why would the air work perfectly until stopping at a light and hear a little sound then starts blowing very hot air instead? Even when put in neutral and revved up doesn't help, until ...
2
votes
0answers
564 views

A/C only kicks on when set to defrost

07 Town & Country - The a/c compressor only kicks on when I have the it set on defrost. When I move the setting to vent or anything else it blows cold for about 3-5 mins then it gradually gets ...
2
votes
0answers
149 views

On my '99 Grand Am the electric windows, A/C, dash gauges, speedometer stop working sometimes

Sometimes they come back on in a few minutes but sometimes it's hours or maybe a day and they will all start working again at same time. Other things like radio, CD player, cruise, horn, wipers, door ...
2
votes
0answers
533 views

AC Honda DX Civic 95 not cooling button for recirc AIR unlit

I have had an issue with a 1995 Civic cooling. It worked 2 months ago. I will try to be specific. I have studied HVAC, Compressors in Blgs, just not vehicles so I know the system somewhat. It will ...
2
votes
0answers
4k views

Can a blend door be easily fixed/replaced in a Ford Escape Hybrid 2006? Also, passenger side airbag removal?

I recently got my AC compressor fixed, but after doing this it turns out my AC still isn't great because of a messed up blend door (according to my mechanic). Apparently this is a fairly common ...
1
vote
0answers
10 views

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 ...
1
vote
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 ...
1
vote
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?
1
vote
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 ...
1
vote
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. ...
1
vote
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 ...
1
vote
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?
1
vote
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 ...
1
vote
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 ...
1
vote
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 ...
1
vote
0answers
28 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 ...