Question about 2005 Nissan Pathfinder

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No heat on 2005 nissan pathfinder

Fan is blowing air but no heat

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The owners manual gives a procedure for obtaining diagnostic codes from the Body Control Module (BCM) and displays them on the HVAC control display panel. Some things that may be at fault are, a defective heater pump, which will lead to an air lock in the system, or a defective blend air door motor in the heater and cooling unit assembly. It is system which can tax the patience of the best of diagnosticians.

Posted on Aug 26, 2014

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Posted on Jan 02, 2017

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pal03246
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SOURCE: 2002 nissan pathfinder LE heat/AC fan stays on highest speed all of the time

Could be one of 2 things. It could be blower motor resistor or blower motor amplifier. If you have AUTO AC feature/setup, than it will be the amlifier. If you have manual AC than I would look at the resistor, but sounds like you have AUTOAC system, so get the amlifier checked. Its behind the glove box screwed to the air box assembly. 2 screws and its out. Hope this helps. Good luck and let me know what you found.

Posted on Oct 26, 2008

  • 1 Answer

SOURCE: Heater blowing cold on 2005 Nissan Xterra

I live in Alaska and have had the same problem i just added more coolent to the radiator and it warmed up i installed a block heater and i leaked a bit and the coolent level got low and i would have no heat. I tryed to fill just the coolent resivoir and that dident work so i filled the radiator pumb full and that worked!! Hope this helps.

Posted on Jan 18, 2009

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SOURCE: 2005 Pathfinder Heat Flow problem

I am having/had the same problem. My rear heater has not worked the last 2 winters, still trying to figure that one out. But I think I solved the front heat problem myself. The heater was blowing cold air while idling and hot air when the car was moving.

I jacked up the front of the vehicle, took the cap off of the reserve tank for the radiator, turned the car on and ran the heat (AC off) for 15 minutes. This is supposed to release any air bubbles in the coolant system and I did see air bubbles emerge as I was watching (this might be normal occurance, I'm far from a mechanical expert). Anyway, this did not immediately solve the problem, still blowing cold air as it sat there idling after 15 minutes. Dejected, I put the cap back on, lowered the vehicle and resigned myself to taking it to a dealer.

But a funny thing happened the next day, the coolant level was a lower (no leaks on the floor) so I filled up, and sure enough, when I started the car and let it warm up a little, hot air started coming out of the heater!!!

As far as my wife knows, I fixed the problem for the price of a bottle of coolant, so I am a hero...but at first I thought it didn't work. Here we are a month later and still blowing warm air and haven't had to replace any more coolant...the internet is a wonderful thing!

Hope this works for you, and I hope I can figure out my rear heater problem as well.

Posted on Jan 30, 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.

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

Posted on Feb 24, 2009

  • 1 Answer

SOURCE: automatic transmission dipstick location for 2005 nissan pathfinder

The dipstick is located under the air cleaner on the right-hand side, identified by a yellow ring.

Posted on Jun 28, 2009

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