Question about 1997 Nissan Sentra

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I have 1997 Nissan Sentra GXE, my A/C gets cold up until it gets 93 degrees outside. Then it blows hot air, once it cools down outside. My A/C gets cold again. Anyone has answers?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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HGComputers
  • 81 Answers

SOURCE: 1999 Nissan Sentra oil in air filter

First off, nothing "blows" into the air filter. It would be getting sucked in from somewhere in your engine compartment. My guess would be leaking valve cover. Check around and feel for wet oil. That will also be a leak. Have you been going through more oil than usual? Check that also. Hope that helped.

Posted on Jan 04, 2009

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onyeredson
  • 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.

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Paul 'W' U.K

Posted on Feb 24, 2009

  • 432 Answers

SOURCE: 2005 altima won't blow hot air until the vehicle

Check the coolant level.If you are low it will stop flowing thru the heater core at low RPMs.

Posted on Jan 05, 2010

  • 67 Answers

SOURCE: 2003 Nissan sentra 2003 gxe, had 4 yrs, no

Start the car up when it is cold and rev the engine up for 30 seconds,loosen up the radiator cap and see if there is pressure there..If there is you probably have a bad head gasket...Caution do not open cap if engine is warm...

Posted on Mar 01, 2010

SOURCE: 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.

Posted on May 17, 2012

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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

2000 nissan altima blows cold until outside temp reaches 90 degrees then blows hot


2000 Nissan Altima Heater Air Condition Section HA 76 pages Here is factory service repair manual for your vehicle . Do you know how to do testing on these system ? Automotive electrical system testing ? How to read a wiring diagram ? When hot outside is the inlet pipe to evaporator freezing up ? Do you know where this is , under the hood in the engine compartment at the fire wall . What are gauge readings , Is the compressor engaging ? Were any switches replaced ? Ambient temp. , thermal transmitter switch . pressure etc...

Apr 25, 2017 | 2000 Nissan Altima

1 Answer

2003 nissan sentra gxe heater core


The problem is likely in your heater case doors, not the core itself. These doors are either vacuum operated or small motor operated.

Get the car warmed up, then feel both heater hoses. Both should be hot, meaning coolant is circulating. If only one is hot, the other cold, then you have a circulation problem.

Feb 23, 2018 | Nissan Sentra Cars & Trucks

1 Answer

I have an 1996 Nissan Sentra GXE i live in ND and the heater only blows luke warm air while at full operating temperature. I replaced the thermostat and flushed the heater core which seemed clean....


Sounds like it's the air control flap which determines the mix of heated and fresh air. This could be vacuum controlled or manually with a cable.

Jan 10, 2011 | 1996 Nissan Sentra

1 Answer

2003 Nissan sentra 2003 gxe, had 4 yrs, no problems, blows cold air only, had lines flushed to remove air, thermostat works fine, is it the head gasket?


Start the car up when it is cold and rev the engine up for 30 seconds,loosen up the radiator cap and see if there is pressure there..If there is you probably have a bad head gasket...Caution do not open cap if engine is warm...

Dec 21, 2009 | 2003 Nissan Sentra

1 Answer

No heat ..help installed new heater switch, replaced water pump..replaced coolants, and thermostat......................what else could it be? Nissan 2003 GXE Sentra 1.8 L Engine/...


you could have an air pocket in the cooling system that has to be burped. With a cold engine, park uphill and leave the radiator cap loose. Fill radiator and coolant reservoir. Start engine with cap loose and run at 1500 rpm until temp gauge reads normal. Feel if top radiator return hose from engine to radiator is hot. If yes, coolant is flowing and thermostat is open. If cold, thermostat is not staying closed until engine is hot.

report results.

Oct 29, 2009 | 2002 Nissan Altima

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

1 Answer

Ac blowing hot air


This sounds like the mode selector is stuck on heat. Under the dash is the location of the hvac plenum and you need to check the cables and levers that are on it to see if they move when heat and cold are changed as well as the lever for where the air is directed.

Oct 16, 2017 | 2002 Nissan Maxima

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