Weird AC issue on Sedona 11 - Kia Forum

LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old 07-03-2019, 09:50 AM Thread Starter
Join Date: Jul 2015
Location: Toronto, Ontario, Canada
Posts: 22
Drives: Kia Sedona 2011
Gallery: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)

Thread Starter (Thread Starter)
Weird AC issue on Sedona 11

We have a 11 Sedona. The AC is blowing hot air. I check the compressor and the pressure. The both are normal working condition. When the AC is on, the compressor is turning. Pressure on the low port goes to about 40 psi and the high port goes to 150 psi. When the AC is off, the compressor is not turning and pressure readings are about 100 on both side. Any suggestion on next step? Thanks.

redbert is offline  
Sponsored Links
post #2 of 4 (permalink) Old 07-03-2019, 02:28 PM
Full Member
Lou O.'s Avatar
Join Date: Feb 2019
Location: Fairfield Glade, Tennessee
Posts: 92
Drives: 2019 Kia Sportage. SX with AWD. 2.0L Direct Injected Turbocharged & Intercooled Gas.
Gallery: 0
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 21 Post(s)

Is the pipeline leading to the A coil in the dash cold and sweating? If yes, could be something obstructing A coil, or perhaps a HVAC door is not opening or closing correctly...
Lou O. is offline  
post #3 of 4 (permalink) Old 07-03-2019, 03:00 PM
Join Date: Oct 2018
Location: Ontario, Canada
Posts: 5
Drives: Sedona, 2010: Forte, 2017
Gallery: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

Just an opinion but considering that the front and rear have separate TXV and Evaporator - if they're both blowing hot (cooler/same/hotter than surrounding air?) then it's something else that's common to both. If one is cold while the other isn't then that would make things a lot easier to isolate.

Gaining access to the rear evaporator might be easier to achieve that the one in the dash. That way you could determine the temperature of the inlet/outlet pipes and the evaporator itself - eliminating/identifying a problem with the HVAC doors not closing properly thereby blending hot air. Either way (front/rear) not a quick job.

Out of curiosity, does the compressor stay engaged (when on MAX AC) continuously and are the radiator fans engaging once the pressure increases (only 150 psi?).
tad844 is offline  
post #4 of 4 (permalink) Old Today, 07:17 PM
Join Date: Aug 2017
Location: Henderson NV
Posts: 39
Drives: 2011 Kia Sedona LX
Gallery: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)

150 on the high side while operating is very low for R134a system unless your ambient temperature is 65 degrees F.

2011 Sedona LX
1991 BMW 525i
Trackerrrr is online now  

  Kia Forum > KIA Models > Kia Carnival & Sedona Forum > Kia Carnival & Sedona 2006+

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On