air conditioner only works when driving
Read on to learn the most common reasons as well as how to fix the problem in each case. When you are traveling above 55 mph enough air may be blowing over the condenser to disperse the heat.
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1998 Honda CRV.
. If not it could just be a bad relay so test that first 5-10 if its not the relay its probably the fan itself 50-80. AC Blows Cold Air Only When Driving 30 MPH or Faster. When you are moving the air is flowing through the condenser coils which is what cools the air.
When I get to a stoplight it gets cold again. Replaced the AC compressor. 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.
In order for ANY AC. I have a 2007 Honda Pilot and recently the air conditioner AC began switching between cold and warm even when the controls are set to full 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.
Ac cold while driving and not at a stop is typically indicative of an air flow problem if everything else is up to snuff. System to provide cool air out the vents it must be abl. You need air moving overthrough the condenser whether its from the fan or from driving.
AC is cold only when the engine is revving above certain rpm. I need help finding why my cars air conditioning 2011 Ford Mustang v6 is only blowing cold air at idling and not while driving on the highway when its 100F here in Nashville. Just turn on the car and ac and look to see if its spinning.
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. If i hit the streets with a temp of 80outside the ac will startblowing warm air and after a. The fans have two modes a slow and fast one.
Anytime the AC is on the fans should be running. This door directs incoming air through either the AC evaporator or the heater core or a blend depending on the desired temperature. There is a good chance your AC compressor clutch.
The fan is still blowing when I am at a stoplight or in a drive-thru it just blows hot air. The ac works only when the car is accelerating. The AC on my 2008 20 L turbo now only works when I am driving at speeds of at least 30 MPH.
When driving for a few minutes it turns to warm. If the high side is only 175 psi and the low side is 30 you do not have enough refrigerant in the system. The fast mode is when both fans are running and you can actially hear them running from outside of the car.
Id bet your condenser fan is kaput and the high speed air when youre driving fast is doing the job it should. Answer 1 of 17. Ive tried putting it in neutral and revving the engine while waiting to move again but this does not seem to make a difference.
However when you say that it clicks on this almost sounds as if the system is losing its Freon charge. Does your AC work fine when you first start the car but then fail after a while especially on hotter days. Car air conditioner not blowing cold air when idling is a pretty common issue related to your vehicles AC unit.
If the fan isnt pulling enough air through the condenser at lower speeds the air conditioning may not work. Performance open the hood at idle and verify that the radiator fan is running and if it is will it firmly pull a sheet of paper to the front of the condenser. In the mornings while driving to work it blows cold air since its maybe 78 outside but once I get off work its 100F and it wont blow cold air.
If Freon charge is good and. When at a stop the air is warmbut if I put it into neutral and rev the engine to lets say 2000 rpm AC gets colderor when Im driving obviously. Do not just add some in need to be recovered sucked down to a deep overnight vacuum and recharged with the proper equipment not just a can hooked to a gauge set.
If higher vehicle speed improves AC. It only works if temp outside is not hot or when i drive it on the freeway. Jun 24 2007.
It remains cold when idling until I accelerate at which time it gets warm within a few minutes. There are many reasons why you might find the AC only works when driving but doesnt blow cold air during idle.
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