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thebesthonda, ASE MasterTechnician
Category: Acura
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Experience:  26 years experience
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I NEED TO KNOW WHY MY AC IS BLOWING HOT AIR ON MY 2001 ACURA

Customer Question

I NEED TO KNOW WHY MY AC IS BLOWING HOT AIR ON MY 2001 ACURA MDX. I HAVE CHANGED THE EXPANSION VALVE AND PRESSURE VALVE, LOAD IT COMPRESSOR COMES ON BUT STILL BLOWS OUT HOT
Submitted: 9 months ago.
Category: Acura
Expert:  david craig replied 9 months ago.

Hi Im David, is the high pressure line cold and sweating as it is going into the firewall?

Customer: replied 9 months ago.
No it isnt
Expert:  david craig replied 9 months ago.

what about the low pressure line?

Customer: replied 9 months ago.
It doesnt get cold
Expert:  david craig replied 9 months ago.

when you replaced the expansion valve and recharged the system, are you sure you put enough refrigerant back in?

Customer: replied 9 months ago.
Compressor came on right away like it was going to work but must came out hot.Pressure stays in the system till we release it
Expert:  david craig replied 9 months ago.

turn the car off. turn the key to the on position. operate the temp selecotr from cold to warm and back to cold and listen to see if you hear the actuator moving. let me know,me thanks

Customer: replied 9 months ago.
I can here it going from hot to cold
Expert:  david craig replied 9 months ago.

ok. do you have a set of ac manifold gauges?

Customer: replied 9 months ago.
No sorry I dont
Expert:  david craig replied 9 months ago.

that is a must have to determine the correct amount of refrigerant is in the system. you dont want it under charged nor do you want to over charge it. one more thing you can check is the cooling fan for the condenser. as soon as you turn the ac on, the fan should come on. also with the ac on, the ac lines going into the condenser and coming out of the condenser 1 should be hot and 1 should be warm

Customer: replied 9 months ago.
I don't have nothing in the system right now should I load it to see if fans come on
Expert:  david craig replied 9 months ago.

ok. do you know hoew much the system takes?

Expert:  david craig replied 9 months ago.

theres a label under the hood that tell you the amount to add.

Customer: replied 9 months ago.
there is so l will put in the right amount and see if the fans come on. Then check the lines if I. don't get back to by tomorrow is that ok
Expert:  david craig replied 9 months ago.

that is absolutely ok. ill be on throughout the day... have a good evening

Expert:  david craig replied 9 months ago.

any update?

Expert:  david craig replied 9 months ago.

hello?????

Expert:  david craig replied 9 months ago.

do you still need assistance?

Customer: replied 9 months ago.
Sorry I've been real busy haven't had a chance to work on it . I'll try to get back into it Monday or Tuesday
Expert:  david craig replied 9 months ago.

ok

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