ac only works when driving slow

It is easy to adjust but you have to waste your refrig charge when you open the system. Sounds like you may be having a similar issue as me.

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Ian you are 8 years too late and I would hope they have fixed the problem or replaced the vehicle.

. If your HVAC works the same as an 04 try this. 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. Either the fan on the front isnt coming on when AC engaged or another reason could be its overcharged with R134 so when Ac is on the compressor is srtaining but you would notice engine slow down when AC engaged if this was the case If both first causes seem to be ok then take bottom hose off and flush cooling system using a heater hose connection and reverse the flow.

It probably isnt he compressor. VOLVO-V70 March 30 2019 128am 11. 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.

You may have a fan malfunctioning. The car is heating only when i am accelerating. Now that summer is.

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

The cooling section of car ac works just like a refrigerator. But unlike your fridge which is powered from the mains electricity the compressor under your bonnet is driven by a belt from your engine. AC Blows Cold Air Only When Driving 30 MPH or Faster.

Sounds like either youre low on freon or your condenser fans are not kicking on. To my knowledge the AC worked fine and had been working fine. 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.

An evaporator coil in the cabin air system takes heat from the incoming air and the resultant gas is compressed by the. When your going down the road airflow is no problem. Many cars are equipped with two radiator fans while others have one.

Hi guys i am having a problem with WJ jeep 1999 47. Up to 25 cash back Ac on auto only works when you drive fast. After a minute or so the low side will stabilize at the POA setting.

As soon as you turn it ON the compressor begins to work and it acts as a load on the engine. 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. Answer 1 of 5.

If the car is standing still on the parking lot heater blows cold air. -set climate to auto and temp to Lo. However the drain is clogged and I could never find where to blow it out.

As soon as you slow down the ac goes out. I presume you mean when the car is in motion rather than only when I am in the driving seat. Super nice super clean.

Odds are good that the fan switch may be at fault but a more likely reason is that a blower motor resistor that controls the voltage going. 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. AC Only Works at Highway Speeds.

Driving down the road it works and gets nice and cold. Another possible cause is. I have had this problem with my 99 Honda Civic for several years and I cant take it anymore.

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. Get a thermometer that goes in your vent to see if its hot as you think it is or not from Amazon HERE. If thats not the issue then your coils on your condenser is stopped up not allowing it to cool the air.

So I have owned this 2001 Suburban since last October. As soon as you get moving it gets cold again. -key to ON position engine off.

Mine is that the AC only works on cool days and when the outside temp is 75 the AC blow hot air. It could be but there is a much more likely culprit. When Im idling with AC on I can hear the AC compressor kicking on for under 3.

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 fan is still blowing when I am at a stoplight or in a drive-thru it just blows hot air. 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.

And noticed that the second fan on the radiator never came on although i. From what I have been told there is a valve in the AC that is not replaceable but there is a company that DOES have parts for the 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 AC on my 2008 20 L turbo now only works when I am driving at speeds of at least 30 MPH. Your AC Fancondenser is might be broken ie Problem with the spindle sometimes when the spindle is broken on travelling at high speeds the fan is pushed backwardsinwards and this restricts the motion of the fan and it might slow down or stop causing the compressor to heat and causing the AC to shut down. No air flow no change of state no or little cooling.

Air condition systems only need around 6 lb of pressure to operate. Full larimie heated leather infinity sound system. If the AC is off the compressor is sort of free-wheeling and doesnt load up the engine.

So I just bought this new to me 03 Ram 2500HD 57L Hemi. Mine was 32 psi stock setup for R12. Ive tried putting it in neutral and revving the engine while waiting to move again but this does not seem to make a difference.

-listen to hear if your radiator fans are running. It may come back but only when you -. When driving heating works-ish.

I checked the water pump. When you stop or slow down the airflow depends more on the fan which is either electric or mechanical. 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.

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