Question about 2005 Nissan Sentra 1.8

1 Answer

2005 nissan sentra 1.8 se has cold air blowing from inside vents with temp select switch set on the HOT position. What could be the cause of this problem?

Car interior remains cold with heater select switch dialed up to HOT. Temp difference on heater supply/return hoses shows heat exchange is occurring but car interior remains cold. Antifreeze level in radiator and expansion tank remains the same whether or not engine is running. Mist formation on inside of windshield can only be cleared manually or by running the A/C upon initial start up on cold mornings or when it rains.

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Filmmaker:

    Uploaded 5 video answers.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 73 Answers

Sounds like the heater - ac door actuator is not working. This part would need to be replaced, it's not repairable.

Posted on Nov 24, 2013

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

  • 15459 Answers

SOURCE: 2002 Nissan Sentra Defrost stuck. Only hot air comes out.

The blend door in the plenum is not moving. IT could be the control arm or the control or the door or the shaft. You can access it through the glove box.

Posted on Aug 11, 2012

  • 2 Answers

SOURCE: heater blowing cold air

My 2005 Nissan Sentra 1.8s with 55,000 mi. blows cold air from the heater. Coolant not circulating in engine. Lower hose stays cool to touch. Both heater hoses cold. Changed thermostat - didn't fix it. Coolant not leaking or dirty. None in oil - no oil in radiator. Changed worn water pump belt - pump spins freely with no noise or resistance. Cooling fans come on after warm-up. Temperature gauge stays in normal range then jumps to hot and back again. Coolant good to 10 below - didn't freeze here yet. No other problems or repairs to car. Afraid to drive and make worse. Help!

Posted on Oct 16, 2009

motor1258
  • 6674 Answers

SOURCE: How to replace thermostat on

Do this when cool. Take radiator cap off, start the engine, turn on heat (not defrost) and now top up coolant to about an inch or 2 from top of radiator, as level drops down, and let vehicle run until the radiator fan comes on, then off, about 3 times, and add coolant as needed while it's running. After that, put radiator cap back on tight & make sure return bottle is filled to proper level. Now try that & see how heat is, temperature gauge etc, and keep an eye on return bottle level for a while. Let me know how it is.

Posted on Mar 27, 2009

Smartbuyer
  • 1 Answer

SOURCE: heater blowing cold air

My 05 sentra with 79k miles heat will warm up and then get cold after a mile of driving, we have tried to get the air pocket out, the mechanic stated he thought it could be a blown head gasket, another mechanic said it was a bad heater core. Any advice would be appreciated.

Posted on Dec 05, 2009

  • 108 Answers

SOURCE: No interior heat until I start to drive

You most likely have an "AIR LOCK" within the Heater Core. This requires one to pressurize the Cooling System and loosen the heater hose at the HIGHEST POINT and bleed the Air out of the Heater Core. I am not familiar with the Nissan but have encountered this problem numerous times over the years. Most late model vehicles are equipped with Air Bleed devices which must be utilized any time coolant is drained and refilled.

Most all reputable Auto Parts stores sell and/or rent a pump that temporarily replaces the Pressure Cap that may be utilized to pressurize the system for this purpose. If you don't feel capable of performing the bleeding operation take your vehicle to an ASE Certified Mechanic and have it done correctly.

Posted on Dec 07, 2009

Testimonial: "Great advice. That's what I thought it might be, but I wanted someone else's opinion on the matter. Thanks a lot."

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

2005 Jeep Liberty Windshield keeps foging up what would cause it to do that. AC was blowing cold and stop then fog started coming out of the vents.


fogging inside a car out of vents
with aircon happens sometimes

nothing wrong with the air con system at all .....fog will clear

scientific cause ...cold air hits hot air
the internal temp of the car is higher than the external temp
or other way round
causing fog

Oct 10, 2016 | Jeep Cars & Trucks

1 Answer

NO HEAT. A/C works fine. Air blows but no warmth. blows cold air for front defog and cold air blows when temp cranked high 1-5


warmth comes from the heater in the car
if it is climate control check the climate control module
check for heater control in the vent settings as the hot water tap may not be turning on

Sep 20, 2015 | Pontiac Grand Prix Cars & Trucks

1 Answer

2005 Nissan Sentra - only blowing hot air from vents. Even when it is set on cold. It is only coming out of the feet vents as well and maybe a little from the defrost. The different air strengths...


is this a new problem or just a new car?
tell what you expect?
no car has perfect venting and never will.

is the problem, temperature lever set to cold
but i get hot air?
yes, then the temperature control is broken
to see why, read the manual, RTM
each car make and models and years, vary.
but there are 3 types.
some use a simple cable, and can just come loose
its all in the FSM.
or
at alldata dot com, its all there.
same thing at mitchels too.
ondemand5 dot com.

Oct 08, 2013 | 2005 Nissan Sentra

1 Answer

2002 Nissan Sentra Defrost stuck. Only hot air comes out.


The blend door in the plenum is not moving. IT could be the control arm or the control or the door or the shaft. You can access it through the glove box.

Aug 10, 2012 | 2002 Nissan Sentra

1 Answer

Interior thermostat control is stuck in position that it only blows air in floor, regardless whether its on heat or AC. It will blow hot or cold, just wont allow you to change air flow positions. Also...


check fuses and relays. there is an electric motor that opens and closes a "blend air door' that switches from hot to cold. the other lights may or may not be related. Is is very possible that the plug going into the control unit has a bad connection.

Apr 30, 2010 | 2005 Nissan Sentra

2 Answers

Only hot air blows out vent when switch is in cold or blue area even when ac is on


Could also be that you are out of Freon, Compress may have a leak. Try it on cold setting in the early morning if its not even cool and heats up fast then Rob is correct. ITs a damper/ temp problem which is eternal. You can tear apart you dash and check on the damper (looks like a doggie door) make sure nothing is in the way and the hinger isnt broken.....I hope you can fix it yourself..

May 13, 2009 | 2002 Nissan Maxima

4 Answers

Heater blowing cold air


My 2005 Nissan Sentra 1.8s with 55,000 mi. blows cold air from the heater. Coolant not circulating in engine. Lower hose stays cool to touch. Both heater hoses cold. Changed thermostat - didn't fix it. Coolant not leaking or dirty. None in oil - no oil in radiator. Changed worn water pump belt - pump spins freely with no noise or resistance. Cooling fans come on after warm-up. Temperature gauge stays in normal range then jumps to hot and back again. Coolant good to 10 below - didn't freeze here yet. No other problems or repairs to car. Afraid to drive and make worse. Help!

Dec 22, 2008 | 2002 Nissan Sentra

2 Answers

Heater blowing cold air


My 05 sentra with 79k miles heat will warm up and then get cold after a mile of driving, we have tried to get the air pocket out, the mechanic stated he thought it could be a blown head gasket, another mechanic said it was a bad heater core. Any advice would be appreciated.

Nov 24, 2008 | 2005 Nissan Sentra

Not finding what you are looking for?
2005 Nissan Sentra 1.8 Logo

322 people viewed this question

Ask a Question

Usually answered in minutes!

Top Nissan Experts

yadayada
yadayada

Level 3 Expert

75051 Answers

Phil Lovisek
Phil Lovisek

Level 3 Expert

705 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Are you a Nissan Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...