Question about 2002 Nissan Maxima

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Ac blowing hot air

I have a 2002 nissan sentra gxe. I replaced the thermostat because of over heating. Now that is fixed, but now the ac is blowing hot air. Sometimes if the car is just idleling it will blow out cool air not cold, but while it is driving nothing but hot air. I check the ac lines and they are very cold. Give me some suggestions, it is hot out there.

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  • Nissan Master
  • 18,108 Answers

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.

Posted on Oct 16, 2017

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 422 Answers

SOURCE: 2005 Nissan Sentra, AC blowing hot & engine overheating

most likely a thermostat because the pressure on the a\c will be high if engine is over heating or the fans are not kicking on (check fan relay)

Posted on Aug 25, 2008

mrgreenz
  • 962 Answers

SOURCE: 2002 NISSAN SENTRA GXE 1.8 POOR IDLE LACKS POWER IDLE FLUCTUATES BETWEEN 1800 TO 1100 RPM

Check for vaccume leaks and also you PCV valve. check the hose too. Visually inspect every vaccume hose you can find. Sounds like a leak .

Posted on Nov 10, 2008

  • 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

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

  • 10 Answers

SOURCE: nissan xterra..2000

your air con needs re gasing

Posted on Jul 07, 2009

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