... posted by Terry Haywood  on Monday, 26 February 2001, at 4:38 p.m.
 
 

                       Spring is here! My 95 850's A/C is doing the fast cycle thing. I've seen posts that make recharging sound
                       easy, pretty much just dumping in a can or two or R134. Do I need to measure pressures or temperatures
                       or "just do it"? What about adding oil?

                       There is a sticker in the engine compartment that says a dye was added before I got the car, about 15K
                       miles ago. Should I
                       1. go to a shop to see if they can still spot the leak,
                       2. add refrigerant and see how long it takes to leak out, or
                       3. get a kit that seals leaks and use that?

                       There were posts a few months ago about something called "cryo-chem" that somebody said fixed an
                       evaporator leak but I can't find them.

                       Anything I should watch out for (anything I can do wrong)?

                       Thx,

                       Terry Haywood

... posted by Richard  on Monday, 26 February 2001, at 7:19 p.m. ...in response to "A/C cycling,
                       how to recharge" posted by Terry Haywood.
 

                       1995 had a problem with the A/C evaporator. If dye was added, a black light will be needed to see the
                       leak, along with special glasses. Pull the panel (carpet) off the passenger side (left of where your feet
                       would be sitting in the car) there will then be a plastic panel to remove, you will see a rubber hose that
                       goes to the floor. Dye will most likely show up in the hose meaning evaporator leek and should be
                       replaced. The air from the vents blows over the evaporator, If it is leaking the freon is being blown inside
                       the car , you should not be exposed to R134A, have this problem fixed. Assuming this is the problem. I
                       have found it to be the problem about 90% of the time. Hope this helps, have it checked
 

                       Being that dye was added, have your shop check for leaks.......especially the Evap with a blacklight (seen
                       by removing the R. knee bolster, then blower resistor). That way you'll at least know where it's going even
                       if you decide you'ld rather just top it up again.
                       If you're in a state where you can buy cans of 134a, be carefull not to overfill it as the system only holds
                       1.65lbs total and too much will also cause poor cooling.
                       What we do in our shop is recover it first (nothing's then in the system) and add the correct charge.