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AC Problem
07-16-2007, 02:54 PM
Post: #1
AC Problem
Hi,
I own 1992 LEXUS LS400 and an have AC problem. Last year my ac stopped working and I recharged it and it worked for two days and stopped. I didn't look into it because it was the end or summer and this year I recharged it again and it worked for two days and stopped again. Finally I put an die in it and when it stopped working I took it to the shop. They couldn't find anything but told me to replace compressor with an estimate of $1700.00. I did some browsing on the internet and found ac codes and checked for them. I keep getting codes 33 & 34, also there is a rock crushing sound coming from compressor when I turn it on and the ac light on the dash board starts blinking. I was wondering if you can tell me what that is and do I really need to replace the compressor. The car is still R-12 and I really don't want to spend that much money if there is a way around it. Thanks
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07-16-2007, 09:17 PM
Post: #2
RE: AC Problem
First if it is still R-12 you need to change it to R134A. If the compressor is noisey it is bad or on it's way out. If it is leaking, it could be the compressor or if you could not find the leak with leak dye it maybe a evaporator core. Sounds like more than one problem.

Cary Joe York
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07-17-2007, 01:38 AM
Post: #3
RE: AC Problem
CaryJoeYork Wrote:First if it is still R-12 you need to change it to R134A. If the compressor is noisey it is bad or on it's way out. If it is leaking, it could be the compressor or if you could not find the leak with leak dye it maybe a evaporator core. Sounds like more than one problem.


Thanks fot that but can you tell me where is the evaporator core and how do I check if it is bad?
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07-17-2007, 01:58 AM
Post: #4
RE: AC Problem
NikolinaJ Wrote:
CaryJoeYork Wrote:First if it is still R-12 you need to change it to R134A. If the compressor is noisey it is bad or on it's way out. If it is leaking, it could be the compressor or if you could not find the leak with leak dye it maybe a evaporator core. Sounds like more than one problem.


Thanks fot that but can you tell me where is the evaporator core and how do I check if it is bad and also if you could tell me where is a evaporator temperature sensor and accumulator/drier?
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07-17-2007, 04:30 PM
Post: #5
RE: AC Problem
The evaporator is behind the dash on the right side on the car. The evap. sensor is bolted to the evap. case. See picture of case below.


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Cary Joe York
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07-17-2007, 04:34 PM
Post: #6
RE: AC Problem
Here is another picture showing the reciever dryer and other components.


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Cary Joe York
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07-17-2007, 04:58 PM
Post: #7
RE: AC Problem
CaryJoeYork Wrote:Here is another picture showing the reciever dryer and other components.

I have another question? Which Toyota Compressor fits Lexus and I found the Unirvesal AC Compressor would that fit?
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07-17-2007, 06:21 PM
Post: #8
RE: AC Problem
I have no idea. If you are looking to use anything other than a original factory fit unit, it will be trial and error.

Cary Joe York
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08-26-2010, 04:22 AM (This post was last modified: 08-28-2010 07:39 AM by Pinky 23.)
Post: #9
RE: AC Problem
Hi,One of the first things you should check, therefore, is compressor engagement. If the compressors magnetic clutch is not engaging when the A/C is turned on, the problem may be a blown fuse or a wiring problem.ac unit replacement If the fuse is blown, replacing it may restore cooling temporarily. But the underlying reason for the fuse blowing in the first place needs to be identified and corrected to prevent the same thing from happening again.
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08-26-2010, 08:40 PM
Post: #10
RE: AC Problem
Hey Pinky. This post is over 3 years old. It is probably repaired or gone by now.

Being way2old is why I need help from younger minds.



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