ac only works when driving slow

Up to 8 cash back When the car is moving versus stopped there is more air flow over the condenser the heat exchanger in front of the radiator and that airflow is essential to system operation. Mine was 32 psi stock setup for R12.

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It worked fine for about a year but now it doesnt work when sitting at a stoplight or going slow it only kicks in cold when we are accelerating or driving on the highway.

. 850 AC Drainage Condensation Work. Anytime the AC is on the fans should be running. And noticed that the second fan on the radiator never came on although i.

AC Blows Cold Air Only When Driving 30 MPH or Faster. If the car is standing still on the parking lot heater blows cold air. You may have a fan malfunctioning.

Now that summer is in full-swing I am at the end of my rope. Put a new thermostat in. The AC on my 2008 20 L turbo now only works when I am driving at speeds of at least 30 MPH.

If your car AC blows cold air when driving at highway speeds but turns warm at stop lights or when driving at slow speeds you may have a bad radiator fan or radiator fan relay. It may come back but only when you ac on auto only works when you drive fast. When Im idling with AC on I can hear the AC compressor kicking on for under 3.

Ive tried putting it in neutral and revving the engine while waiting to move again but this does not seem to make a difference. The car is heating only when i am accelerating. Air Conditioning Theory Practice.

My AC cuts in and out especially when in traffic. Volvo AC The Best of the Best Air Conditioning Problems Fixes. Whirling Noise From The AC Compressor.

The ac needs air constantly flowing across the condenser-this is the thing in front of your radiator that looks like a radiator. The relay that you will need to remove is under this cover. The fast mode is when both fans are running and you can actially hear them running from outside of the car.

The condenser fan relay was removed temporarily to disconnect power to the fan. As soon as I go through the light the heat comes back. When your going down the road airflow is no problem.

When you stop or slow down the airflow depends more on the fan which is either electric or mechanical. Get a thermometer that goes in your vent to see if its hot as you think it is or not from Amazon HERE. Up to 20 cash back proautotech.

To maintain airflow when the car is in stop and go traffic or is completely stopped condenser fans will come on automatically. We just spent 2k to repair the AC after it completely went out. E60 AC Malfunctions - cutting in and out You definitely seem to know lots bout ACs.

You need to verify the compressor is coming on when the AC is not working. A year later the right rear light only works when you tap it. Thought it was weird but did not stress myself about it.

AC Takes Sweet Time to get Cold in Volvo XC90. Ill tell you the rest later. This can be a few things.

As soon as you Radio and AC control module on 2007 s80 Volvo. Up to 20 cash back Ac on auto only works when you drive fast. I checked the water pump.

Radio come on but cant turn volume up or. Full larimie heated leather infinity sound system. 99 of the time this problem is caused by insufficient air flow into the engine bay while vehicle is in slow moving traffic or at stop with engine and ac on.

This can be caused from a slipping belt bad compressor clutch or even the cycling switch not allowing signal to activate the compressor. Does anyone know why the AC doesnt work when the car is idle. As soon as you get moving it gets cold again.

I removed the condenser fan relay so that no power would be at the connector. Might be able to shed light on below. The AC blows hard all the time but when you are sitting at idle at a redlight or something it goes from cold to lukewarm.

Get off highway and into traffic - AC Malfunctions and only blows hot air no matter how high I turn the fan. The ac works only when the car is accelerating. As soon as you slow down the ac goes out.

This door directs incoming air through either the AC evaporator or the heater core or a blend depending on the desired temperature. Posted by John Beatty on Jan 06 2014. After a minute or so the low side will stabilize at the POA setting.

The fans have two modes a slow and fast one. The quick way to check the POA setting is to run the AC at idle unplug the blower fan and look at the low side pressure. A malfunctioning vacuum-operated blend door will move in one direction when theres high vacuum idling and in the other direction at low vacuum driving which would result in exactly the situation you describe.

Many cars are equipped with two radiator fans while others have. When I stop at a light cold air starts coming out. I have taken it to a shop.

When driving heating works-ish. AC Thermal Switch Delete. Radio come on Radio and AC control module on 2007 s80 Volvo.

Up to 8 cash back The high pressure hose is designed to increase and decrease AC pressure during different driving conditions since the AC drive belt will increase in speed as the vehicle accelerates. Basically the AC high pressure hose is kind of like a turbo for your AC - it supplies more pressure when youre idling and less pressure when the AC motor is. I popped the hood and noticed that when the AC compressor kicks on that it almost stalls the engine.

So there I was naked with nothing but a bag of ice and a 9-iron. Anyone got any ideas. So I just bought this new to me 03 Ram 2500HD 57L Hemi.

Hi guys i am having a problem with WJ jeep 1999 47. The fan is still blowing when I am at a stoplight or in a drive-thru it just blows hot air. Now truck is running at a consistent temperature from the inside temp gauge but I only get heat when truck is moving.

2005 XC70 AC Works Then Stops Working. Super nice super clean. Driving down the road it works and gets nice and cold.

09-07-2011 1055 AM 5. Highway driving - Ac functions perfectly. Blows Cold Then Goes Warm.

Two months later the right head light went out. By the way the POA adjustment if pretty easy and makes a big difference in the AC temp. The air conditioning compressor will turn off at the slightest rise of heat due to excessive HEAD PRESSURE - however the engine will not show any signs of overheating.

1 Air Conditioner problem. My one issue is the AC doesnt work when the truck is idling. If i am revving the engine from 1000 to 2000 and back or accelerating the heater starts working.

After purchasing this vehicle brand new first owner in September 2013 4 months later the left fog light went out did not think anything of it.

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