A/C Issues - Blowing Hot Air - Lexus IS Forum
User Tag List

LinkBack Thread Tools
post #1 of 2 (permalink) Old 08-13-2017, 08:31 AM Thread Starter
Join Date: Sep 2005
Location: Melbourne, FL
Posts: 3,102
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 20 Post(s)
A/C Issues - Blowing Hot Air

I went to drive the IS today and the A/C was blowing hot air. It was working perfectly fine the previous time I drove it (which was about a month ago). I'm hoping it just needs a recharge since it was sitting for a while and working perfectly before. Anyways, I used a gauge that came with a recharge can and it showed that the pressure was high with the A/C on. The clutch does visibly engage and disengage when the A/C is turned on and off respectively so I'm wondering why the gauge shows the pressure being so high on the low side port. The gauge shows high when the A/c is on and off, which has be concerned because the 'Ez Chill' instructions state to take it to a mechanic if it shows high with the A/C on. Does the IS300 compressor have a special feature which won't let the compressor turn on if its low on refrigerant? The sight glass near the headlight doesn't show bubbles (or possibly nothing at all). Would a simple recharge solve this issue or is there a mechanical issue with the compressor?



2004 IS300 MSM 2JZ-GTE VVT-i Single 61mm 5 Speed
2015 Toyota Tacoma TRD Sport LB

Precision's Boosted Ride of the Month
bigkahuna2187 is offline  
Sponsored Links
post #2 of 2 (permalink) Old 08-13-2017, 01:35 PM
Join Date: Dec 2010
Location: Marietta
Posts: 1,528
Mentioned: 0 Post(s)
Tagged: 1 Thread(s)
Quoted: 362 Post(s)
Don't double post.
01 SolarYellow is offline  
Sponsored Links

  Lexus IS Forum > Lexus IS > Basic Help & Repair

Quick Reply

Register Now

In order to be able to post messages on the Lexus IS Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself. If your address is invalid, you will likely lose access to the site.

Email Address:


Current users viewing this Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Forum Replies Last Post
A/C Issues - Blowing Hot Air bigkahuna2187 General Discussion 8 08-20-2017 06:53 PM
Issues with Air Flow Meter Omarbjn01 Basic Help & Repair 1 07-18-2017 07:22 PM
2008 lexus is250 heater blowing cold air Lexus267 General Discussion 1 02-21-2017 05:06 PM
AEM Cold Air Intake System for Lexus IS CARiD CARiD.com 0 04-05-2016 01:52 AM
2003 A/C and CEL issues adamthrowsroks Basic Help & Repair 0 12-05-2015 05:51 PM

Posting Rules  
You may post new threads
You may 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

For the best viewing experience please update your browser to Google Chrome