wags70ss

One other note: I rebuilt the front end over the last couple weeks & also replaced the radiator. I noticed that there is a sensor at the bottom driver side of the radiator. Does it have anything to do with the ac system?

Can the inside temp sensor go bad on these cars?

I checked the heat valve & appears to be working normally. The top hose is hot & the bottom hose is cooler. When I turn it on hot, they both get hot. Engine temperature is normal, but I noticed that even with the ac on, niether of the fans are running. Its only 66 degrees here today, so that may be why.

Yes everything is working the way it should. Compressor is running, climate control is working properly, no codes, inside temp sensor is plugged in (removed panel under the column to check it), heat valve arm on the fire wall is moving when I move the temp from hot to cold. It should work, but its not. Thats why I am stumped.

I just replaced mine. Got them from NAPA. Affordable & come with a lifetime warranty! If anyone is looking for upper a-arms, I got mine from Arnott http://www.arnottindustries.com/part_LEXUS_Air_Suspension_Parts_yid7_pid46_gid421.html $199 a pair & life time warranty! GREAT price & easy to install!

Hello, new to this forum. I have a 1992 LS400. I have owned it for several years. It is the second one I have owned. I am a master mechanic with over 35 years of expirence. I have always worked on all my own cars. I replaced the engine in my first LS (that was fun!) & have done extensive work on this one too. Here is my issue. I replaced the AC evaporator last year & all the seals in the system. I converted it to 134a & it worked great. This year when I went to use it the first time, it did not blow cold. I have checked the freon level & it is OK, & I have run the diagnostic on the LCD & get a 00 code, but it does not blow cold air. Has anyone expirenced this issue or can anyone tell me what may be the problem? :chairshot: