fatlouis

Hello everyone,
I tried to refill my dad's Lexus A/C.
Yes, I tried to add on the low side
The AC was converted to R134a per father.
When I tried to add, it seems like there was a lot of pressure against the flow, i.e. the refrigerant refused to go in and circulate. Needless to say, it all sputtered out and onto the floor.
I think the compressor may be bad...no circulation = no place for refrigerant to go in system = it ends up on the floor. Any insights????
Thanks

PureDrifter

iTrader: (10)

What year is the car? It matters.

Sounds like you tried to add it to the high pressure side. The low pressure side in R134a 1st gen LS400s is near the passenger side (LHD countries) shock tower as shown in the following link. http://www.lexls.com/tutorials/air/acrecharge.html

Your compressor theory is completely incorrect for multiple reasons.

dicer

An another note. So far every Gen 1 I have seen that has been converted has an AC system that does not work. To convert them is a very time consuming and costly deal if it is done by a shop properly. The compressor needs to be flushed out along with everything else. And a new receiver dryer accumulator and expansion valve should be used, and the proper lube for the new refrigerant too. I suppose most DIY conversions don't do any of that. If not done the compressor will not last at all. Actually a rebuilt or rebuilding the compressor should be done when doing the conversion and all the seals for the system as well need to be changed. So I'm guessing to have a shop do it would be in the 1500 range maybe more. I don't know if the evaporator needs to be accessed or not for seals. (Note just found a picture of it and it looks like yes) Accessing the evaporator means taking the dash out and I suppose that is a 600 plus dollar deal at a shop, and if you do that you minds well replace the evaporator too. So a shop conversion done right, I would think the cost would be over 2000.