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Nissan Altima Climate Control Questions
We love our 2007 Altima 2.5SE but now that winter has set in here in Minnesota I find that the driver position does not seem to get heat directed to the floor while the upper body is roasting. This is while control is properly set to direct heat to floor. Eventually heat works it's way down from upper levels but it takes about 30 minutes. Anyone else have similar problems or know of a fix?
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I have a 2002 Nissan Altima. The engine was faulty and was replaced last yr so its kinda new. The problem with my car A/c-Heating is that the engine heats up just fine once I start driving, but hot air takes a long time. Even after its on, it works ok, not great, as long as the car is moving. As soon as I slow down or wait at a light, it starts throwing out cooler air!
Has anyone seen a similar issue? OR know how to solve this problem.
Thanks!
1) When heating the system seems to always use the floor setting.
2) When cooling the system defaults to bi-level (floor and chest)
3) The system will automatically tunr on the A/C if it needs to cool.
4) The system automatically adjsuts fan speed and keeps the fan on minimum until the engine is warm enough to supply warm air.
5) AUTO only automatically selects the vent setting and fan speed. If you manually select the vent setting you will also have ot manually set the fan speed. The temperature is still automatically regulated.
6) Like all new cars the A/C is automatically turned on when defrost of defrost/floor is selected. It will stay on even after another vent option is selected ot prevent fogging. You have to manually shut it off.
7) The A/C compressor is use to dehimidy or to cool. How do oyu think a dehumidified works?... it's just a air conditioning unit but the warm condensor coils are together so there no significant heating or cooling. A heat pump is just an A/C unit operated in reverse. I've always wonderd why for cold weather, luxury cars haven't been designed to use the A/C as a heat pump to provide warm air before the engine is heated up.
My wife and I love the dual zones. I always want it 3-4 degrees cooler than her, and there's those times where one of use in in the sun. We used to just shut vents, but this works much better.
My guess is that heated seats resolved that issue, at least from the manufacturer's viewpoint. Plus, the reversing valve to put the compressor in heatpump mode would probably cost $1.98, and they couldn' t recoup the cost as easily as selling heated seats at a higher option price...still, a great idea, though.......
If you want your car to heat up quicker in the winter, turn on the headlights (150Watts in inluding marker and tail lights) and rear defroster (~200Watts), stereo (50 Watts). That's about an extra 1/2 HP. Not a lot, but every little bit helps. If you don't believe it, watch the RPM's change when you turn on the rear defroster and the alternator is loaded.
Becasue you stated in your posting...
there's no air flow from any of the 3 vent ports(defrost,front vent and floor vents
Can you hear the fan running,or does it act as if the speed selector switch is disconnected?
Its difficult to repair a problem that you can't see, and you are probably much better off not having the dealer just wildly replace parts that may or may not be at fault...that generally adds to your misery instead of abating it...
Thanks again for the response and the help.Any future advice welcomed if you get any more information on this defect/malfunction.
R.Sullivan1
Keep working with the dealer... or try another dealer if possible. It definitely sounds like one of the automatic dampners in the duct that directs airflow is sticking closed on occasion. That's where they need to look.
I know on my car, to protect the dampners from damage, the fan is slowed down to the lowest speed when changing vent position, then turned back up again.
RSullivan1
Good luck!
I have just experienced the same problem with my 2008 Altima coming back from a trip to Pittsburgh last Sunday. I noticed that the air flow had stopped when the temperature in the car became very warm and nothing could bring it back except leaving it in the garage overnight. The next morning the air came on as if nothing had happened. Maybe some part became frozen what with the high humidity. Outside of the car it was a torrential downpour for two or three different times.
This problem occurred by driving a distance and the day was pretty warm. Since I bought the car in February I have never driven the car any great distance and the air flow has been working as it should until last Sunday. Of course it is working again on Monday.
this is really annoying during the winter when I use the defrost the most. and with the heat on. so when I change it to blow the heat to the floor after my windows have defrosted the AC turns on and I have to hit the button to turn if off EVERYTIME.
I have talked to the dealership multiple times and they tell me this is normal. THIS IS NOT NORMAL. I had a 2006 Altima before this one and it did not have this problem.
Does anyone else have this issue?
I think it is a lame scheme from folks that live in damp (coastal) area. I live in Denver, so it makes me want to hunt down the automobile engineer that created it (there should be a bounty). Killing is too good.
Thanks for any help.
Thanks for any help.