Question about 2003 Chrysler PT Cruiser

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AC compressor is working correctly and the freon levels are correct but the air in the cab is just cabin temp. air flows good through vents just not cooling although evaporator lines and coil is cold.

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Sounds like you have a stuck temperature blend door uncertain whether yours is electric or vacuum controlled

Posted on Jul 13, 2010

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2 Answers

If my freezon would be low then why is it very cold air when I'm going on the road


because the temp difference between the hi and low side will be greater faster than a normally charged system the reason it cycles off is the keep the evap. from freezing up, but running to low on Freon can cause poor lubrication in the compressor causing damage to the compressor, yes it will blow very cold for a short period of time with a low charge

Oct 14, 2015 | 2004 Dodge Neon

1 Answer

How to troubleshoot low air flow from the vents on a 2000 Toyota Echo?


check the polartily at the fan & make sure the fan is turning the correct way
but first check the cabin filter/air intake is no blocked

Apr 04, 2014 | Toyota ECHO Cars & Trucks

2 Answers

My 2004 jaguar x-type ac is not working. the temp gauge inside shows that the ac is on, but nothing is blowing out of the vents. Please advise


check freon level first. You should hear the compressor clutch kick on under the hood when you turn it on. Can you hear and see it come on and start spinning the compressor?

Aug 15, 2011 | 2004 Jaguar X-Type

2 Answers

Air conditioner not working, there is a constant flow of warm air coming from the vent even when the ac is off. when you turn on the ac it just blows hot air. the compressor cycle on and off. it is a gmc...


the a/c system could be low on freon but not to low so as the compressor stops working this can cause your problem.you don`t say if the compressor cycles constantly as this is another indicator the system is low.

Apr 05, 2011 | 2002 GMC Envoy

1 Answer

Air conditioning not too cold ??


Hello,
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Let me explain in layman's terms how the air conditioning (AC) system works and what could be happening to your car.

Like your body, the air conditioning compressor is the heart of the AC system, and Freon is the blood. The compressor pumps Freon throughout the AC system, either the older type R12 which costs as much as gold it seems these days, or the new environmentally-friendly R134A Freon. This Freon is a gas and liquid combination that is compressed and circulated throughout the air conditioning system. The compressed Freon is pushed through the system under pressure and is passed through different sized metal and rubber hoses and a special valve called an expansion valve that cause the gas to expand and contract.

This expansion and contraction makes the Freon gas very cold. This cold gas makes its way via metal lines into the dash area of your vehicle to the evaporator core. This evaporator core is like a small radiator, except it has cold Freon circulating inside and not hot antifreeze. A small fan (the AC blower fan which you control from the control panel on the dash) sits in front of the evaporator core and blows air across this cold evaporator and then through the vents inside your vehicle.

The other objective of the air conditioning system is to remove the heat from inside the cab of the vehicle. This heat is removed by the Freon with the help of the AC condenser located at the front of the car (usually in front of the radiator). The Freon coming back from the evaporator carries the heat from the cab to the condenser via rubber and metal hoses. Just like your radiator, the condenser is lightweight aluminum with many internal winding coils.
The Freon travels through these coils, and in between these coils are small slits or fins that the Freon is forced through. The condenser will have an electric cooling fan mounted in front or behind it to push or pull air through these fins to remove the heat from the Freon. Some vehicles still use the old fashioned fan blade driven by the engine to pull air across the radiator and the condenser.
Now I know that is just a tidbit of information on how the air conditioning system works, and it is very general, but I wanted you to know what to look for to give you insight as to what might be happening with your vehicle.
A few causes of low cooling efficiency or no cooling at all at idle are:

Lack of air flow across the condenser. Make sure the electric cooling fan motor near the condenser is coming on, or in models that are equipped with a fan blade make sure this fan is turning and is turning very fast.

Low Freon levels. Freon level and pressure should be checked by your certified air conditioning mechanic.

Overheating. If the engine is running hot or overheating, it can have a noticeable negative affect on the air conditioning system. Some cars have two electric cooling fans, one for the air conditioning condenser and the other for the radiator. Make sure they are both working properly. Usually at idle on a hot day with the AC on both fans will be on.

When the vehicle is traveling at freeway speeds, the compressor is pumping the Freon throughout the system much faster and harder than at idle. There is a dramatic increase in air flow across the condenser due to 55 mph winds, and the engine is usually operating at a cooler, more efficient temperature as well, thus allowing the air conditioning system to operate efficiently.
Note: An air conditioning system that is somewhat low on Freon can still feel comfortable at freeway speeds due to the added air flow across the condenser which can overcome the ill effects of slightly low Freon. Periodic air conditioning performance checks by your mechanic are the best way to keep the system in great shape.

Hope this helps.

Goodluck

Oct 08, 2010 | 1998 Cadillac DeVille

1 Answer

1997 Nissan 4 cylinder truck AC works excellent throwing snowballs cold air, then it will blow hot air. Relay switch and clutch has been replaced....Did not fix problem!


sounds like compressor isn't working properly or heater vacuum is opening vent to heater core.try turning on ac and if it cuts on and off repeatedly every few seconds the freon level is not correct or high pressure switch may not be working make sure radiator fan comes on when ac is on.if all this is working properly check vacuum hoses to heater may be opening vent doors to heater.hope this helps

Aug 11, 2010 | 2005 Nissan Altima

2 Answers

2001 Saturn L200 Air conditioner issue


You need to make sure the freon is correct,by having ac gauges put on the system,if the compressor is running the gauges will tell if there is a problem with the ac system itself,now,it can be the temp door actuator motor that is in the dash,if it is not moving the temp door open,it will need to be replaced.

May 27, 2010 | 2001 Saturn L-Series

1 Answer

I have a 1999 Volkswagon Passat. The air conditioner works great at night or when the outside air temp is below 80°; it will put out 55° air. But during the day it will only put out 10°...


check to see if you have a cabin air filter and if it is dirty have it replaced at a local auto shop.. if that isnt the problem and the freon level is correct then you will have to live with it.. a/c are concidered effiectient if they cool 20* below ambiant tempature.. personally i would say have the freon level/quality checked again

Aug 03, 2009 | 1999 Volkswagen Passat

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