Question about 2001 Nissan Frontier

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I have a 2001 nissan frontier. Hot air is blowing from my vents even when fan is turned off. The heat works even when I turn on my A/C. No cold A/C. What's the problem?

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

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Posted on Jan 02, 2017

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Anonymous

  • 405 Answers

SOURCE: Front air condition does not blow cold. Rear air condition does

sounds like a damper door in the front not working properly, these are actuated by the front temp control, the door is operated by either a manual cable, and electric actuator, or vacuum. I hope this helps you zero in on your problem. Merry Christmas

Posted on Dec 22, 2008

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mike raines

  • 120 Answers

SOURCE: 2005 nissan sentra-air stuck on defrostwont switch to floor or ve

vent door is stuck open

Posted on Feb 14, 2009

onyeredson

Paul W

  • 404 Answers

SOURCE: Nissan Altima no cool air blowing or hot air blowing

Hi!
It appears we have an Air lock scenario and you will need to perform a system Bleed.
Park the vehicle on level ground, when cold remove coolant filler cap, start engine and leave to idle, turn heater on full and blower to max. When engine reaches operating temperature watch and listen near coolant filler, keep clear as gurgling and hopefully a boil over should occur. Top up with very warm coolant and wait as it may do it again.
Check for heat inside vehicle if warm replace coolant cap but keep an eye on temperature gauge as the ~Air lock may have moved on from heater matrix/core so proceedure needs to be carried out again from COLD.

Please press the Blue button to appraise my FREE Efforts, Thank You!
Paul 'W' U.K

Posted on Feb 24, 2009

its420_us

  • 316 Answers

SOURCE: Would like to recharge my air conditioning on my 2001 nissian maxima that has 117,000 on it blows hot air when air conditioning is turned on.

You will need R134a, and a filler hose. Charge the system on the low pressure side, it should have a blue cap on the charge point.
Your filler hose will only fit the low pressure side, just in case the cap has been removed.

Posted on May 23, 2009

Anonymous

  • 135 Answers

SOURCE: 2001 nissan maxima air condition fan not working

If the ac fan is not coming on the ac is inop. the compressor is bypassed. Check fuses and relays first.

Posted on Aug 04, 2009

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1 Answer

97 Nissan Maxima heat still blowing when AC is on


Well thinking about the problem there e a flap in the vent pipes to shut off theatre and ac unit perhaps something has got in the pipe and stopping it closing or perhaps your heater control is US and needs replaceing . ( but I take it you have turned your heater to cold )

Dec 14, 2017 | 1997 Nissan Maxima

1 Answer

Heated air still comes out of my vents even when the air is off


You might have a faulty water valve. The hot air in the car is supplied by the engine cooling system. As the engine works, it heats up and water is circulated through the system and kept at a cooling level by the radiator. However, this water is still hot, and by turning on the heat in the car, a valve is opened that allows the hot water to circulate through the heater core inside the car.
This core is in fact just a mini radiator, and air from the blower fan inside the car blows air through this mini radiator, thus supplying hot air in the car.
If you don't want hot air in the car, the heater control operates a valve that shuts off the hot water from the engine. If this valve is faulty, it will allow hot water to circulate through the system. Another possibility is that the cable operating the water valve might be maladjusted or the cable or the lever operating the cable is broken or faulty. It often happens that the outer part of the cables slip and the controls operate so-so but never well.
If the cables to the dashboard controls are not adjusted properly or have started slipping, it could also cause the fresh air vent to not close properly, and this will cause a flow of air even when the controls and the fan are turned to the off position.
You can remove the control panel from the dash and check the cables and controls, but it is a finicky job. Maybe you want to take the car to a mechanic?

Mar 29, 2014 | 2001 Nissan Sentra

1 Answer

2000 NISSAN 4X4 P/U A/C SYSTEM WILL BLOW COLD WHEN OUTSIDE AIR TEMP IS COOL, WHEN HOT OUTSIDE AIR BLOWS HOT.


your auxillary fan is not working. this fan is responsible for cooling the freon that is being circulated in your cooling system... check if there are any loose wires in front of the engine bay.

the auxillary fan is located right beside your radiator fan.

May 17, 2012 | 2000 Nissan Frontier

1 Answer

The heat is not getting hot in the front but the back heat blows out hot heat. Whats the possible problem?


If you can get cold air blowing out the front vents, the front heater door is not working properly. If you don't get air blowing out, check the front heater fan and its resistor block.

Jan 14, 2011 | 2001 Lincoln Navigator

1 Answer

AC blows cold or hot


if it is the same thing that is wrong with my frontier. check to see if the compressor is turning on when you use the ac. if not you might have a bad connection that is intermittantly preventing the compressor from getting the signal to turn on. get a service manual and a voltmeter and you can fix.

Jul 01, 2009 | Nissan Frontier Cars & Trucks

1 Answer

2002 New VW Beetle is only blowing hot air out of vents even when set on cool. I was driving and I made a turn at an intersection and all of a sudden the cool vent air turned to hot air like I had the heat...


On the bottom of the air unit is the lever that changes temps. It likes to fall out of place.I propped mine back with a piece of half-inch copper pipe a couple of years ago.Remove glove box then panel on front side of console to access.

Apr 09, 2009 | 2003 Nissan Altima

1 Answer

No rear heat


The rear vent system has a separate heater core/blower system. heater core could be plugged up or the coolant lines going to rear heater core are plugged. could also be low coolant/faulty water pump not producing enough pressure, or air in the cooling system which will need to be bled if so.

Feb 22, 2009 | 2001 Dodge Durango

1 Answer

Heater not working


I would check if your vent to the outside is open. If it is I would check the vacum hose that controls the vent to open and close.

Jan 27, 2009 | 2001 Saturn SL

3 Answers

Heater blowing cold air.


Check the water contol valve operation ( under hood connected to heater hoses), do you have a full load of coolant?, also air mix door under dash, is the temp of the coolant hot?.Check them all out, you'll find it

Jan 03, 2009 | 2001 Volkswagen Passat

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