So hot in PHX... Need A/C Help! - Club Lexus Forums

So hot in PHX... Need A/C Help!

Thread Tools Search this Thread
Old 07-15-14, 10:52 PM   #1
Driver School Candidate
Thread Starter
Join Date: Mar 2013
Location: Az
Posts: 6
Default So hot in PHX... Need A/C Help!

Hey Everyone,

So I've spent the last several days scouring the internet and this website and can't find a solid answer that seems to fit my situation. So any help or points in the right direction would be much appreciated.

The Issue: I had a slow leak in my a/c line and had to charge it every other week. about 2 weeks ago, i noticed my ac was not anywhere near cold, so i hooked up my gauge and checked the pressure and decided it could be topped off. After driving for about 10 minutes, My ac light started to blink and the air was hot. The compressor had kicked off. if i push the ac button, it stays on for about 5 seconds, then the compressor shuts off again and the light blinks. If I continue to push the button, the the air starts to get cold again, so I know im not low on freon. plus i had the hose repaired early this week (to be certain i wasnt low or still leaking) and its holding pressure with no visible leak. theoretically, there shouldnt be a pressure issue either (high or low side cut off switch, evap core, or expansion valve) if the compressor can still generate cold air, even after letting it sit this entire week. I have replaced the magnetic clutch relay, which is one of the common fixes and no dice, still blinks. I ran the diagnostic and i show 00 which is the system is functioning properly.

at this point, im lost. I have also read that it could be the ac revolution sensor, a blend door servo or motor, solar sensor wiring problem, to the ecu being bad, However, the people who have replaced this with success dont seem to have the same or similar symptoms. The clutch on the compressor is still strong and does not get too hot or slip; once again, the ac can produce cold air if i keep pushing the ac button. Also, it seems like everyone that has ran the diagnostic are getting multiple codes, like 43, 21, etc, but mine is not throwing any other than 00 or 21 (solar sensor) if i run the test at night. How can I have a 00 system normal diagnostic code, yet my ac is definitely not working? Anyone have any ideas or points on troubleshooting this? Has anyone bypassed the shutoff and just created an in cab switch for the compressor? Once again, any and all help is much appreciated!

Last edited by SC300AZN; 07-15-14 at 10:58 PM.
SC300AZN is offline   Reply With Quote
Old 07-16-14, 07:54 AM   #2
Lexus Champion
iTrader: (13)
soarer13oy's Avatar
Join Date: Feb 2008
Location: Sacramento
Posts: 2,190

Might want to hook it up onto a machine or gauges at least to see what your pressure level is at. Too little or too much can cause your ac system to shut off.
soarer13oy is offline   Reply With Quote
Old 07-19-14, 12:53 AM   #3
Driver School Candidate
Thread Starter
Join Date: Mar 2013
Location: Az
Posts: 6

unfortunately, im new to the ac game (guess i took it for granted since i live in phoenix), so i dont have my own set of gauges, but i took it to a friends shop and the system is holding pressure and reading near full charge and the compressor is strong. From what ive read, its probably the clutch/shim spacing, the high or low pressure switch, or electrical... if its electrical, im effed. well, not effed, but i am far too fat and laxy and it is far too hot outside for me to diag electrical. What i need is a good way to test the clutch and pressure switches, or, for someone to tell me im stupid and point out the problem. Thank you for your advice/input!
SC300AZN is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
AC Issues - Tried EVERYTHING - Please help! jarob SC430 - 2nd Gen (2001-2010) 16 06-08-16 11:38 AM
A/C Shame huesero ES - 1st to 4th Gen (1990-2006) 3 05-24-12 07:53 PM
A/C problems - 92 LS400 cuda6pak LS - 1st and 2nd Gen (1990-2000) 2 06-02-10 06:12 AM
A/C light blinks on and off, air gets hot, resets huesero ES - 1st to 4th Gen (1990-2006) 1 05-13-08 08:50 PM
AC compressor replaced, system charged, AC light still what?! ef9 Maintenance 4 08-07-04 10:47 AM

ac problem, blinking ac light, code, compressor, revolution

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Pingbacks are Off
Refbacks are Off

Forum Jump

All times are GMT -7. The time now is 07:12 PM.

Copyright © 2000-2016 Internet Brands, Inc. All Rights Reserved