Do not ever turn the knobs on the gauges unless you are filling the system or using a vacuum pump.

The bulb for the expansion valve needs to be fixed to the evaporator outlet tube and insulated. I have a small hose clamp holding mine on, and it's insulated with prestite tape, which you can beg, borrow or steal from an ac shop, or get mail order. I have the little tubes sort of looped in a circle such that I can get the aquarium cover back on. It's not pretty, but it works.

I had one bad valve, got confused with the second and had bought a third before I realized the second one was actually ok. Once I had the system charged correctly on a hot day, things have fallen into place. Part of the problem is that the anti-frost switch on my 91 isn't working and this was allowing the evaporator to freeze when it was not smoking hot out.

Try following the charging instruction I sent to you by email and see what that does. If you still can't get good cooling, then you have a problem other than the quantity of r134a in the system.

posted by 24.50.5...

• Mediocre cooling with new AC compressor., Erwin Timmers, Fri, 12 Jul 2002 22:33:57
  • Re: Mediocre cooling with new AC compressor., Robert Kaplan, Sat, 13 Jul 2002 09:01:30
    • AC gages and capillary tubing, Erwin Timmers, Sat, 13 Jul 2002 20:27:09
      • Re: AC gages and capillary tubing, Robert Kaplan, Sat, 13 Jul 2002 21:26:07 <-- Viewing This Message
    • Hey Robert, Question for ya,,,, KeithR, Sat, 13 Jul 2002 11:48:35
      • Purging, Robert Kaplan, Sat, 13 Jul 2002 21:17:10
        • Re: Purging???, Erwin Timmers, Sun, 14 Jul 2002 11:43:38
        • Just checking, some miss that step n/m, KeithR, Sat, 13 Jul 2002 22:16:39
  • How did it work right out of the shop?, KeithR, Fri, 12 Jul 2002 22:40:58
    • Re: How did it work right out of the shop?, Erwin Timmers, Sat, 13 Jul 2002 08:40:57
      • Was the area of the leak damp with oil?, KeithR, Sat, 13 Jul 2002 11:45:33
        • Idiots, misfits and morons., Robert Kaplan, Sat, 13 Jul 2002 11:49:01
          • Good point!, KeithR, Sat, 13 Jul 2002 12:20:38

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