Question about 2004 Chevrolet Silverado 1500 Crew Cab

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No cooling effect from ac - 2004 Chevrolet Silverado 1500 Crew Cab

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The obvious first, check freon... second, check fuses, and finally check that the clutch engages on the ac compressor when turned on (you should here a click and notice a small, momentary difference in the idling of the truck) you can also visually check the clutch by watching the compressor when someone else turns it on. if the clutch is not working, the inner part of the pulley does not spin.

Posted on Feb 09, 2014

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Posted on Jan 02, 2017

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El ac demi taurus 2001 funciona bien pero nomas lo echa por arriba pegado al vidro y por los pies,alguien me puede dar una idea de lo que pasa?


When defrost is engaged the air conditioning is defeated. Switch back to dash position for best cooling effect.

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A orifice valve that is clogged will not produce cold air in the a/c

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2010 dodge caravan ac gets cold then hot


2 things come to mind the first is are you stepping on the gas to accelerate when it happens this will be caused by a vacuum leak somewhere in the emissions or under the dash/ second are you standing still and you feel the air get hot if this is the case your cooling system is running hot and the heat is transferring to your a/c condenser and making it hot reducing the cooling effect of the Freon because it is getting hot itself

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HEIL HVAC, fan blows but no heat or AC


Your airconditioning system may be out of cooling gas, and if it has sufficient gas, the compressor might not pick when you put on the AC, and if the compressor did not pick ie start, you cant experience cooling effect, the fan will only be blowing.

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Coolant boils,whats the problem?


Hi Odnanref, If the coolant is boiling you have a problem with the cooling system. If you cannot see a leakage have the thermostat in the engine checked and replaced and hope that you have not overheated the engine to the extent of needing a cylinder head reconditioning job carried out. The AC is effected because the condenser is mounted in front of the radiator and depends on cooling from the fan. If the engine overheats the AC will be unable to cool. Regards John

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The ac starts out cold and stays that way on hwy driving but starts blowing warm air in stop and go traffic. why?


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My air is not running correct.. blowing hot air out.. what can we do to fix this problem


hi

this may be because following reasons.

1. you might have kept the temperature selection switch in heater please check it.
2.there may be leak in the AC line which might have drained the refrigirant so no cooling effect.check the line for leakage.
3.the refrigirant used may be less which doesnt give much cooling effect.
4.the cooling fan which cools the refrigirant may not working or speed is reduced which may reduces the heat transfer rate

if my answer were useful to you please vote me.

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1 Answer

AC doesn't blow cold air, but refrigerant levels


The low side pressure seems ok the high side would help,Is your compressor cycling and is the air coming out even slightly cool?slight over charge cold effect cooling ability.I wish I could be more help. I will have to think about this one.maybe you could make sure your temp.door is actually in the commanded cold position.

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My sc1 over heats when at idle and only if ac or heat is turned off as soon as i turn onn ac heat drops imediately


you may want to check on the radiator fan. The AC has its own fan and once AC is on, the fan would help bring down the temperature. It is either the fan is not blowing or has become weak. You can check on the fan by pulling out the temp sensor on the lower radiator hose. The fan should blow at full speed when doing this.

Check on the water reserve the water inside it goes down, if not there may be a leak somewhere. Water vapor may be escaping and lessening the effectiveness of the cooling system. This may be a reason why the engine cools down after the AC fan is on.

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1 Answer

Ac runs hot


If the electrical cooling fan for the AC condensor is operating, I'd just try adding a can of R134 to your system. It isn't costly and it may have just fallen too far to be effective. The coolant molecules are so small, hardly any system remains tight enough over the 8-9 years you have used the car to avoid some losses.
If the fan isn't operating, you need to find out if the fan motor is at fault or a relay isn't turning the fan on with the AC. 

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