1993 Lexus ES 300 Air conditioning not working

EFALCON2286

MEMBER
1993 LEXUS ES 300
6 CYL
AUTOMATIC
180,000 MILES

Hello I have a 93 es300 which is blowing air but not cold when I turn on the air conditioning. If its hot out it will blow hot air out which is killing me.

These are parts I've replace:
Compressor
Drier
Freon
Did a vacuum/leak test and it came out perfect
Expansion valve

Still no luck. I really would appreciate help in fixing this because I've done everything with a mechanic but he's out of answers and I don't want to spend money getting it fixed at a dealership.

1 Reply

HMAC300

MECHANIC
48,601 POSTS

You have auto temp control do this first to see if any codes a sensor may be causing the problem
While pressing and holding temperature control knob and left side of fan (down) button, turn ignition on. Indicators will flash and tone will sound as a check. Press OFF button to cancel indicator check. After indicator check is complete, system will enter self-diagnostic mode. Stored trouble codes will appear in sequence on temperature display panel. See AUTOMATIC A/C-HEATER SYSTEM TROUBLE CODES table.
Press left side of MODE button to display codes one at a time. If tone sounds when code is displayed, problem causing code currently exists. If tone does not sound when code is displayed, associated problem is past history and does not currently exist. Press OFF button to exit self-diagnostics