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ac started blowing hot air,its not low on freon and the compressor

 
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  • Answered by:NISSAN TECH
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Customer Question

ac started blowing hot air,its not low on freon and the compressor is not out,it seems more electrical or maybe a relay any clues??

 

Optional Information:
Year: 2007
Make: Nissan
Model: altima
Engine: 4cyl

Already Tried:
Yesterday we simply turned the car of and it started blowing super cold,,tried it today and nothing.......

Submitted: 321 days and 1 hours ago.
Category: Nissan
Value: $18
Status: CLOSED
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Expert:  NISSAN TECH replied321 days ago.


NISSAN TECH :

hi the problem will be the pressure switch on the drier i have seen a few go bad

Customer : Where is the drier located on that model? Thanks!
NISSAN TECH :

it is on the condenser drivers side you will have to remove the clips on top of the front bumper and pull it back to see it

Customer :

New pressure switch came in today,was not expecting the high pressure blast of green oily stuff,what is it? What next? Did i drain the system of freon?

NISSAN TECH :

yes you did drain is system , now you will need to get it vacuum and refill you will need an ac machine for this ,

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Expert:  NISSAN TECH replied319 days ago.

Our chat has ended, but you can still continue to ask me questions here until you are satisfied with your answer. Come back to this page to view our conversation and any other new information.

What happens now?

If you haven’t already done so, please rate your answer above. Or, you can reply to me using the box below.

Customer replied318 days and 5 hours ago.

I have replaced the pressure switch and taken it to the auto shop to have the freon system recharged and it still doesn't work! I've spent $200 and still no cold air...what next??

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Expert:  NISSAN TECH replied318 days and 5 hours ago.

i think the 225psi that you say you have is too hight, don't know what it is now, i like to see it on this car at about 150 high and 30 to 45 low , but there are also 4 computer in the a/c system any one of them can be at fault , i know you don't have the tools /scan tool needed to do this , but the next thing would be to monitor the a/c on signal in the ecm,bcm,ipdmer,and the a/c amp computer to first see what computer do not have an on signal , and also monitor the pressure switch signal , at this point i think you should take it to the shop and stop spending money you don't have to; if you ask me this is too much for someone with out the right tool .i know its not what you wanna hear but that is whats next

Customer replied318 days and 4 hours ago.

What next?

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Expert:  NISSAN TECH replied318 days and 4 hours ago.

you need to take it some where that have a scan tool that can read data and check the signal i list above

Customer replied306 days and 19 hours ago.

Would have been real helpful to mention that when you removed the pressure switch you would be blasted in the face with freon,,,,starting all over after spending over 200 dollars

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Expert:  NISSAN TECH replied306 days and 12 hours ago.

you did not ask how to replace the switch or told me then you was going to replace it ,

 
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