View Single Post
  #10  
Old 06-26-2007, 02:09 PM
col klink col klink is offline
Diesel Newbie
 
Join Date: Dec 2006
Location: Minneapolis, MN
Posts: 27
Quote:
Originally Posted by vstech View Post
when you shut down the motor, the compressor "passes" the 200ish pressure to the low side, to equalize the pressure. totally normal.
Swank, thanks. That's good news. I wasn't sure because the compressor in my Chrysler never makes that kind of noise.

This morning when it was 75 outside I was able to get 58 at the vents but at lunch today it was 90 outside and the vent barely dipped below 70. Not comfortable!

So, I'll hit the auto store for yet another can of R134a. The last time I added refrigerant the low side pressure was 25 psi at 2000 rpm -- I'll try getting it up to 35. If this doesn't improve the performance then it's time for some more serious work.

But before any major work, I believe I should add some oil. Let's say she takes a 1/3 of can of R134a tonight (total of 26 oz) -- this means that the system was basically devoid of refrigerant as I will have added the system capacity back in. Did the bulk of the oil leave with the previous refrigerant? Should I add 2 oz? 4 oz?

And if I add oil, it should be ester right?
__________________
Own: '85 300TD Turbo - 171K miles
Owned: '81 380 SEL - 180K miles
Reply With Quote