New A/C is NOT cold---air recirculation control bad?!? - Nissan Forums : Nissan Forum
 
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#1 Old 09-12-2010, 05:42 PM
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New A/C is NOT cold---air recirculation control bad?!?

My elderly mother just put a new A/C compressor in her 2005 Altima (cuz old A/C died). The Nissan dealer used factory part$, but afterwards, the air flow was low and the car was warm.

Because the dealer is quite far away, I am trying to help her myself. I checked the air filter inside the car's dash board and it was the old, dirty, clogged original & replaced it myself. Now the air flow is okay, but the car is still NOT cold.

The freon level seems fine (35-40 psi =green/yellow on guage), the 2 radiator cooling fans & the antifreeze (level and H2O %) seem fine, & the thermostat was replaced a year ago.

>> Yesterday I realized that the "air recirculation button" is NOT working--it is always off (= yellow LED) and pushing it does nothing (LED does not turn green like before). I tried holding it in, tapping it, etc. w/o success.


ANY SUGGESTIONS ON HOW I CAN FIX MY MOM'S A/C?
Is the problem simple so a local A/C specialist could do it instead of the difficult trip to the dealer?!?

Thanks! :-)

Last edited by Stief Bijer; 09-12-2010 at 05:46 PM. Reason: forgot to say...
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#2 Old 09-15-2010, 08:58 AM
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when was the last time the cabin filter was changed? it could be severely clogged.

she paid for the dealer to replace the a/c. the a/c system isn't working. bring it back to the dealer and have them correct the job they were already paid to do.

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#3 Old 09-15-2010, 11:33 PM
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I already replaced the "Cabin" filter

Thanks for your advice, but as I stated in my original post:

> the dealer is quite inconveniently far away

> I ALREADY replaced the filter inside the car behind the dashboard on the passenger side (what you apparently call the "cabin" filter)

+++++++++++++++
So far: 60+ post views...but 0 ideas

Unfortunately for my mother, this problem must be too complex for the members on this forum to give any help. :-(
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#4 Old 09-16-2010, 09:43 PM
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Quote:
Originally Posted by Stief Bijer View Post
Thanks for your advice, but as I stated in my original post:

> the dealer is quite inconveniently far away

> I ALREADY replaced the filter inside the car behind the dashboard on the passenger side (what you apparently call the "cabin" filter)

+++++++++++++++
So far: 60+ post views...but 0 ideas

Unfortunately for my mother, this problem must be too complex for the members on this forum to give any help. :-(
so let me get this straight :

1. your mother brings the car to the dealer and pays to have the a/c fixed.
2. the a/c in not working.
3. you don't want to bring the car back to the dealer to have them fix the a/c that they were already paid to fix. if the dealer is so far away, why did your mom go there in the first place?
4. your now asking us to diagnose your mom's a/c without seeing the car.

the dealer was the last person to touch the a/c system and if you want to pay someone else to diagnose and fix the a/c, it's your money.

see if compressor's clutch clicks on when the a/c is turned on. if the compressor's clutch doesn't engage :
1. it could be a loose or unconnected wire (at the compressor)
2. a loose wire or unplugged low pressure switch, or maybe the low pressure switch is bad. you can use a jumper wire on the low pressure switch connector which will trick the system into thinking the switch is fine. if you jump the connector and everything works fine, you have a bad low pressure switch.

check to make sure the belt has proper tension (with the engine off).

p.s. these are just a few suggestions.

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Last edited by jimnolimit; 09-16-2010 at 09:50 PM.
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#5 Old 09-16-2010, 11:23 PM
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Quote:
Originally Posted by Stief Bijer View Post
Thanks for your advice, but as I stated in my original post:

> the dealer is quite inconveniently far away

> I ALREADY replaced the filter inside the car behind the dashboard on the passenger side (what you apparently call the "cabin" filter)

+++++++++++++++
So far: 60+ post views...but 0 ideas

Unfortunately for my mother, this problem must be too complex for the members on this forum to give any help. :-(
Comments like that are likely to not get you many replies...This would be what I perceive as your second negative post about this forum.

A/C is not the easiest of things to diagnose, which is why it is better left to someone who does it all the time. A local specialist can do just as good a job as the dealer can in fixing your mom's car. With the air recirculation not working, it may be something inside of the air diverter box and have nothing to do with the A/C itself.


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#6 Old 09-17-2010, 12:46 AM
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Could be totally off with this but:

Fuse?

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#7 Old 09-17-2010, 09:57 AM
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Originally Posted by RIZAMAN View Post
Could be totally off with this but:

Fuse?
not at all, the problem could be as simple as a bad fuse or something much more complicated. there are too many variables to properly diagnose this situation over the internet. the OP is going to end up paying for a local shop to straighten out the problem even though his mom already paid the dealer to fix the a/c.

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#8 Old 09-17-2010, 05:25 PM
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Is the climate control set to "Max A/C"? If so, IIRC you can't turn off the recirculate function on that setting. The yellow (orange really) light should mean it's on, since it doesn't light up at all when the recirc is off. There is no green light. To test the recirc operation, turn the function knob to blow out of the dash vents. When you push the recirc button it should turn on with the orange light (and it'll turn on the A/C light as well).

Check the A/C compressor to make sure it's running. The low pressure side of the A/C will read OK on your gauge when the compressor is not on, which can give false information. If either 1) the compressor never turns on, or 2) it cycles on and off quickly (once every few seconds) then it's likely low on freon. You can try doing what I've done in my old POS and jumper across the low pressure sensor just to make sure the compressor will turn on and off.

Typically, with the pressure gauge hooked up, you'll see pressure hold pretty steady while the compressor is on. When it cycles off, pressure should rise slightly to around 45, at which point the compressor should kick back on.
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