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Sedans Nissan Altima Nissan Altima Climate Control Questions
25 messages, Last post on Mar 11, 2009 at 11:11 AM
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Hi, 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! |
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Replying to: arafat (Dec 12, 2007 5:06 pm) 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.
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Replying to: motoguy128 (Mar 25, 2008 8:24 am) 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.......
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Replying to: busiris (Mar 25, 2008 9:31 am) 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. |
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I recently purchased a 2008 Nissan Altima and Im having problems with the heating and cooling vent system.While using the heating/cooling or defrost, at any speed adjustment on the fan,I lose air flow through the vents.I can have the fan on the maximum speed and still there's no air flow from any of the 3 vent ports(defrost,front vent and floor vents).I have taken my vehicle back to the dealership service department 3 times since my purchase and have been repeatedly told that there's nothing wrong with the vehicle.Has anyone experienced this problem with any of the newer model Nissan Altimas?If so,what was done to correct the problem.Any help would be greatly appreciated.
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Replying to: rsullivan1 (Mar 28, 2008 7:05 pm) 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?
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Replying to: busiris (Mar 28, 2008 7:25 pm)
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Replying to: rsullivan1 (Apr 06, 2008 6:35 am) 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...
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Replying to: busiris (Apr 06, 2008 10:12 am) Thanks again for the response and the help.Any future advice welcomed if you get any more information on this defect/malfunction. R.Sullivan1
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Replying to: rsullivan1 (Apr 06, 2008 7:55 pm) 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.
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