ac only works when driving slow

Then it kicks off for about 2 second. If thats not the issue then your coils on your condenser is stopped up not allowing it to cool the air.


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A year later the right rear light only works when you tap it.

. To my knowledge the AC worked fine and had been working fine. As soon as you get moving it gets cold again. Does anyone know why the AC doesnt work when the car is idle.

Since the AC is not working but when I am at highway speeds and have it on after about 10 Minutes the dash makes the. AC Only Works at Highway Speeds. Hi guys i am having a problem with WJ jeep 1999 47.

You may have a fan malfunctioning. Radio come on Radio and AC control module on 2007 s80 Volvo. 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.

The ac needs air constantly flowing across the condenser-this is the thing in front of your radiator that looks like a radiator. It could be a low charge of R-134a also. AC Blows Cold Air Only When Driving 30 MPH or Faster.

And noticed that the second fan on the radiator never came on although i. My one issue is the AC doesnt work when the truck is idling. As soon as you slow down the ac goes out.

The high and low side gauge readings are normal around 30035 psi. I have taken it to a shop. 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.

The AC on my 2008 20 L turbo now only works when I am driving at speeds of at least 30 MPH. I checked the water pump. 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.

Radio come on but cant turn volume up or. 09-07-2011 1055 AM 5. The ac works only when the car is accelerating.

I popped the hood and noticed that when the AC compressor kicks on that it almost stalls the engine. Does this indefinitely making the truck sound like its idling funny. 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 engine turns the compressor. This can be caused from a slipping belt bad compressor clutch or even the cycling switch not allowing signal to activate the compressor. The car is heating only when i am accelerating.

We just spent 2k to repair the AC after it completely went out. VOLVO-V70 March 30 2019 128am 11. Anyway I think the fuse is a 40amp maxi-fuse.

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. Ill tell you the rest later. 1 Air Conditioner problem.

When you stop or slow down the airflow depends more on the fan which is either electric or mechanical. The fans have two modes a slow and fast one. Get a thermometer that goes in your vent to see if its hot as you think it is or not from Amazon HERE.

First the engine RPM are very low likely around 700800 RPM. Up to 25 cash back Ac on auto only works when you drive fast. Driving down the road it works and gets nice and cold.

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. Could also be a bad compressor or one on its way out. This can be a few things.

You need to verify the compressor is coming on when the AC is not working. It may come back but only when you ac on auto only works when you drive fast. When your going down the road airflow is no problem.

The faster the RPM the faster the compressor spins. 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. 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.

Air Conditioner stops blowing cold air when vehicle is not moving plus one on the cooling fan problem. Many cars are equipped with two radiator fans while others have. The faster it spins the more refrigerant it is pumping through the system.

If i am revving the engine from 1000 to 2000 and back or accelerating the heater starts working. If the car is standing still on the parking lot heater blows cold air. 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.

As soon as you Radio and AC control module on 2007 s80 Volvo. An auto AC has two limiting factors when the car is at idle. The fan is still blowing when I am at a stoplight or in a drive-thru it just blows hot air.

4 Jul 27 2016. Although at some point the compressor wont engage if there isnt sufficient refrigerant in the system. Thought it was weird but did not stress myself about it.

The fast mode is when both fans are running and you can actially hear them running from outside of the car. Rev the engine with the car stopped the high side stays at 300 psi. Two months later the right head light went out.

When I drive the car and get it moving 30 mph or so the high side reading drops to under 100 psi along with the loss of cool air. Ian you are 8 years too late and I would hope they have fixed the problem or replaced the vehicle. Air condition systems only need around 6 lb of pressure to operate.

When driving heating works-ish. 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. Joined Jul 17 2016.

So I have owned this 2001 Suburban since last October. So there I was naked with nothing but a bag of ice and a 9-iron. Now that summer is in full-swing I am at the end of my rope.

If it was low on charge then as you slow down condensor temps and line prressures would raise therefore it would cool at low speed and and not when moving since the incoming air would drop system tempreducing line pressure and then cusing. However the drain is clogged and I could never find where to blow it out. Up to 25 cash back proautotech.

Anytime the AC is on the fans should be running. When Im idling with AC on I can hear the AC compressor kicking on for under 3 seconds. Bring the car to a stop the high side goes up to 300 psi.

To maintain airflow when the car is in stop and go traffic or is completely stopped condenser fans will come on automatically.


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Air Conditioner Only Works When Driving What Could Be Wrong

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