When the outside temperature is about 55 to 60 degrees, with AUTO on and A/C off, and the climate control set to 60 degree, I will continuously get very warm air from the air outlets, and if I raise the climate control to higher settings, I will still get the warm air from the outlets except the blower speed slows down. This situation happens every time when I was driving in the city (NYC).
The dealer replaced the sensors, but nothing has changed. Now the dealer insists that this is normal and I should always have the AC on.
Please let me know if there is anything wrong or this is normal.
Thx.

 

That's what mine does too... the other day I just wanted some nice fresh air (was around 60) and so I turned auto control and the A/C off.. just vented air. Warm air was coming out of the vents and I don't know why. Anyone else notice this? It is kind of bothersome.

 

yeah that happens to me too when i am driving in town...but when i am driving n the highway it seems to blow cooler air.....i think it is bringing air from the engine into the cabin......not a biggie to me.

 

If the A/C is off, it probably pulls air from the heatercore. I doubt they figured you'd have the A/C off and still want cool air.

 

Somebody brought this up MONTHS ago. Mine does it, too, and it's a definite annoyance. Under certain circumstances, a workable solution is to just turn the whole HVAC off. You won't get any moving air, but at least the temperature won't increase.

 

It hasn't gotten that cold yet where we live; but when the temperature was around 58-60 and I had the A/C off, with just the fan blowing, the car fogged up inside. I opened the windows and cleared the humidity but it came right back once I closed the windows.

 

Yeah. Mine does the same thing. Even when you have the heat turned all the way down the incoming air is still warm out of the vents.

CM.

 

Yep, you guessed it. Mine does it too..I just noticed it for the first time last night. I kept turning the temp lower and lower until I just opened a window.

However, I'm sure this is not "normal", as my '01 and '97 Max with automatic temp control did not do this. You SHOULD be able to get fresh outside air into the car thru the vents without it being heated by the engine. We all need to keep an eye for a TSB about this situation.

 

lol, dude, it did the exact thing to me yesterday. their heating/cooling system sucks. i never get the "right" temperature of air when i adjust to the setting, it's going to suck in the winter. and btw, i was in NYC just you mentioned also. i think it sucks in large cities or something, haha.

 

If you are in 60 degree weather then why set climate to auto? just open your windows.

 

Check this thread: http://www.nissantalk.com/forum/show...hreadid=116263

It's a desgin fault by Nissan and hope we can work out a solution...

 

Yes, I've also noticed this annoying apparent flaw in the vent design. How crazy is that... needing to run the AC when the outside temp is 50 degrees!

 

I hope all you people took the time to write to www.nissanusa.com and express your feelings about this flaw. I don't even have my 2004 Max yet but I'm a big time user of the vent on my 91 Max. I've already written to them and got a response back. Supposedly they are going to look into it. Below in quotes was their response.

I think if we all write to Nissan USA and FORCE this issue they'll take it more seriously. Another thing is stated fuel mileage, is this with the A/C always on? Because using the A/C will impact fuel efficiency to an extent.

Write to them at this address...
http://www.nissanusa.com/form/0,,act...tactus,00.html

"Thank you for taking the time to personally contact us with your suggestion about the ventilation on the Maxima.

We value your opinion and have forwarded your suggestion to our Model Line Department for possible future implementation.

If you have any further suggestions, please let us know by reply e-mail or by calling 1-800-647-7263 and pressing "0" for a live operator.

At Nissan, we are committed to a high level of customer service.

Sincerely,

Nissan North America"

 

Hey MaxShadow!.. Nice to see another Connecticut'er
But not so nice to hear you have the vent problem with your '91, obviously Nissan has done nothing to address this issue in the last 3 model years!

I'll definitely drop NissanUsa a note.

 

My bad...I wasn't clear, I guess in my post. My 91 Max does NOT have this problem. I DO get cool air when using the vent. What ever the outside air temp is just passes through the ducts. So this issues must be with the later generations.

 

Nissan went to this new HVAC design in either '00 or '02 across the entire Nissan/Infiniti line. In my '99 Max SE, one could indeed get outside air inside the cabin that was unheated bt turning down the temp to the lowest setting and hitting the manual economy mode. People from almost every other Nissan or Infiniti product forum have been complaining to Nissan about this for over a year with no action taken by Nissan. The good news for Nissan is that they have a lower cost (read cheap) subsystem in place for their all their platforms and save big $$ to feed corporate profits. The bad news is for us. Not very easy or cheap to make changes that affect almost every vehicle they make even if they are for the better.

 

Ok, I was out cruising the town today. It was a sunny 74 degrees. I had the windows down and with the A/C off but with blower on. Temps on both sides of the screen were set at 73 degrees. I felt no hot air coming out of the vents or anywhere.

 

I hate to stir things up, but why would you not want the A/C compressor on? Yes, I live in sunny Texas (where it can occasionally get to 0 degrees, btw), and I never turn my A/C compressor off ... the A/C helps dehumidify the air (which helps keep the windows from fogging up in cold weather and is better on my sinuses) and the A/C actually helps in filtering the incoming air because of the temperature differential of the coils. And running the compressor year-round helps keep the seals pliable and prolongs the life of the system.

You can easily dial in enough heat to overcome the cooling effect, so that's not a problem either.

I'd say just leave the system on Auto and enjoy life.

Mike

 

I read half this thread, and admittedly skipped the rest. I was laughing to hard.

If you have auto on, you aren't going to get vent air just passing through. The car is going to try heat/cool to what ever temp you have set. If you don't want that, you turn auto off and just adjust the fan up or down to bring air from the outside.

I have been using the A/C up until a few weeks ago here in Arizona, but when I wanted to open the vents, I just hit the fan, turned the A/C and auto off... and there it was.

Yes, it is a hokey system, and the climate controls in my last two cars were better, but it works with out any issues.