ac only works when driving slow
Does this indefinitely making the truck sound like its idling funny. 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.
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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.
. I have taken it to a shop. 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 being driven faster. AC Blows Cold Air Only When Driving 30 MPH or Faster.
But if the car is parked in an unshaded area under the hot sun the AC keeps on blowing hot air. The ac works only when the car is accelerating. Rael July 6 2008 826pm 1.
By the way the POA adjustment if pretty easy and makes a big difference in the AC temp. The car is heating only when i am accelerating. If your HVAC works the same as an 04 try this.
It could be a low charge of R-134a also. You need to verify the compressor is coming on when the AC is not working. Car Car AC only cold at high speeds but not low on coolant.
If the car is standing still on the parking lot heater blows cold air. 4 Jul 27 2016. Although at some point the compressor wont engage if there isnt sufficient refrigerant in the system.
Could also be a bad compressor or one on its way out. Anytime the AC is on the fans should be running. When it happens in a vehicle for a long time and often a mistake like this is ignored hot air from outside dilutes the effect of AC slowing down the air thats flowing inside your car.
Your AC works by compressing freon cooling it down since its gotten hot from being compressed through the heat exchanger in front of your car sent to an expansion tube or valve which causes it to cool down since decrease in pressure means a decrease in temperature and into another heat exchanger in your car. Hi guys i am having a problem with WJ jeep 1999 47. For this to be e.
If thats not the issue then your coils on your condenser is stopped up not allowing it to cool the air. This can be a few things. Air conditioners remove heat from the inside of the car and a lot of the heat will be dissipated in the condensing coil in front most of the time of the car radiator.
But there is a much more likely culprit. What could cause a car air conditioner to only blow cool while driving but not while idling. 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.
The fan is still blowing when I am at a stoplight or in a drive-thru it just blows hot air. Ill be going 10-15 miles later and will see if that was the problem. I have had this problem with my 99 Honda Civic for several years and I cant take it anymore.
My one issue is the AC doesnt work when the truck is idling. For the AC to work there has to be a change of state from gas to a liquid in the condenser in front of the radiator To get this change of state there has to be air flow across the condenser. The fast mode is when both fans are running and you can actially hear them running from outside of the car.
Then it kicks off for about 2 second. VOLVO-V70 March 30 2019 128am 11. Does your blower motorfan only run on high speedor not at all.
In this video we talk about the cause and effect that leads to blower motor resistor fail. Sounds like either youre low on freon or your condenser fans are not kicking on. Joined Jul 17 2016.
Driving down the road it works and gets nice and cold. Many cars are equipped with two radiator fans while others have. Air condition systems only need around 6 lb of pressure to operate.
My 2010 E350 AC works fine and blows cold air almost instantly when the car is parked in the shade. When you are moving the air is flowing through the condenser coils which is what cools the air. If i am revving the engine from 1000 to 2000 and back or accelerating the heater starts working.
As soon as you My oil temp light came on and my car lost power it will. I checked the water pump. Up to 20 cash back proautotech.
-key to ON position engine off. When Im idling with AC on I can hear the AC compressor kicking on for under 3 seconds. Its one of the reasons why a number of car owners come down to authorized car servicing workshops and stores for repairing their AC machines.
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. Ian you are 8 years too late and I would hope they have fixed the problem or replaced the vehicle. As soon as you slow down the ac goes out.
It may come back but only when you ac on auto only works when you drive fast. When driving heating works-ish. Up to 20 cash back Ac on auto only works when you drive fast.
Now that summer is. The AC on my 2008 20 L turbo now only works when I am driving at speeds of at least 30 MPH. This can be caused from a slipping belt bad compressor clutch or even the cycling switch not allowing signal to activate the compressor.
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 fans have two modes a slow and fast one. Ive tried putting it in neutral and revving the engine while waiting to move again but this does not seem to make a difference.
Anyway I think the fuse is a 40amp maxi-fuse. I would say in 90 of all cases where I tried to turn offon the AC the AC does not blow cold air. -listen to hear if your radiator fans are running.
I bypassed the switch and it seems to work with a short test drive. To maintain airflow when the car is in stop and go traffic or is completely stopped condenser fans will come on automatically. -set climate to auto and temp to Lo.
Answer 1 of 6. And noticed that the second fan on the radiator never came on although i. Get a thermometer that goes in your vent to see if its hot as you think it is or not from Amazon HERE.
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. 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. I popped the hood and noticed that when the AC compressor kicks on that it almost stalls the engine.
As soon as you get moving it gets cold again.
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