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if the ac system is very strong and there a lot moisture in the air the a'c evaporator core will freeze up and stop air flow threw the cold core only use the recuiculation part to cool the car down about 5-10 min the turn the recuit off
1--BLEND DOOR NOT SEALING PROPERLY
2--FRONT CONDENSOR PLUGGED UP WITH DEBRIE
3--FRONT CONDENSOR NOT TRANSFERING HEAT (SPRAY WITH GARDEN HOSE WHILE ---RUNING SYSTEM IF IT WORKS BETTER CONDENSOR MAY HAVE TO GET CHANGED
4--WRONG CHARGED WEIGHT IN SYSTEM
5--COMPRESSOR CYCLE TIME NOT CORRECT
6--IF COOLANT CABLE VALVE ON SYSTEM MAY NOT BE CLOSING CORECTLY
---TRY PINCHING OFF THE COOLANT LINES TO HEATER CORE
heat sensor for radiator fan switch, thermistat,water pump? Does hot air blow when moving? does car over heat when sitting idling for over 10 minutes. If so check fan first, then water pump. last cause thermisat
You likely have a restriction in the heater coolant hose circuit - perhaps a coolant control valve not fully opening, or a kinked hose.
Insufficient coolant volume is flowing to keep the heater core hot.
Try back flushing the heater core system with a garden hose to check flow.
You can put a higher temp thermostat and that should help, but it should at least have 170 degree air right now if it was working right. There are two other things you might check for, the diverter door make some sound when you switch from heat to cool and back, I can't tell you for sure if it is a manual, vacumn or electric but that would definitely cause it to blow cold air. There is also a valve which cuts off circulation to the heater core when your not using it. This valve will be in line with the heater hoses going to your heater core. I have seen some that were actually part of the heater core box. I feel pretty sure one of these will be your problem. Also if your car is low on coolant it would not heat properly. Hope this can help you!
Hi,
It sounds as if the compressor (that provides the cooling) is cutting out due to either a faulty thermostat or is itself overheating.
Obviously check the thermostat is able to move between it's minimum and maximum levels, anthat this corresponds to the compressor cutting in and out.
With maximum cooling selected, the compressor should not cut out untill the thermostat says it's cool enough. If it does, there is a fault, and you have every right to a refund or a free repair/ replacement.
The fault is usually centered around the compressor electrical components if it is not under any warranty, but it should be. Even if the store does not want to know, the manufacturer should back it for 1 year.
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the compressor has a capacitor that helps to start the compressor if the compressor does not reach the speed required to jump from the start coil to te continum work in about 10 sec the termic protector disconect the compressor for about 5 minutes but the blower or fan does work just blowing the air and that is not cold
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