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 Post subject: Replacing A/C Compressor
PostPosted: Fri Apr 06, 2012 5:36 am 

Joined: Tue Oct 03, 2006 10:43 pm
Posts: 720
Location: Texas 75150
What Should I use to flush out the A/C components with?
What is the best oil to use in the A/C system?
This last winter I had the A/C clutch bearing get so bad I had to disconnect the drive belt.
With close to 200K on the original compressor and random A/C issues over the past 7 years, I have decided to replace the A/C compressor, expansion valve, and dryer. The guy that worked on this car before me used a lot of green dye leak checking crap in this system. So I want to flush out the entire system before installing the new compressor. The evaporator will be coming out too, to replace the expansion valve.
I helped a friend of mine replace all of his blend door foam when he installed A/C in his 94 Geo. He also added window screen behind the air intake trim panel below the windshield. I am sure there is going to be a lot of crap inside the blower motor housing and the evaporator housing just like my friends car had. So I will be adding a screen to mine too. I will refoam the doors as needed.

97 Geo Metro LSI,1.3L-GT-DOHC-16v,4.10 5-speed,A/C,170,000,suspension lowered 1",4 wheel disk brakes,15"alloy wheels with 185/50-15 Toyo's,GT bucket seats,analog oil pressure gauge,cruise control, new paint job. 40 mpg at 65 mph.
Good, fast, cheap. You only get two.

PostPosted: Fri Apr 06, 2012 6:43 am 

Joined: Tue Oct 19, 2010 9:16 am
Posts: 412
Location: sidney, nebraska
You would want to use ans actual A/C system flush solvent availible at most auto parts stores. its compatible with the materials in the system and has a minimal chance of causing corrosion in the system later on. The solvent gets "blown" thru the system with a special pressure chamber with compressed air. If your installing a new compressor then you need to use either pag or ester oil which ever the manufacture recommends to maintain warrenty. Be sure to replace all the o-rings in the system with R-134a compatible parts or all your work will be in vain.

"If you think education is expensive, try ignorance." - Derek Bok

1990 geo metro 1.0 5 speed 3-door hatchback "herbie"
1990 geo metro 1.0 5 speed convertible "sportie"

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