Question about 1999 Saab 9-5
Here is what must be done to track down this leak, have AC dye put in the system, run the car a week or so then have an AC shop use a black light to see the green dye, it glows anywhere there is a leak, have been repairing automotive AC for 40 years and this is the best way to do this, make sure all connection are clean before the test is run.
Posted on Sep 09, 2010
The common freon leak spots are the condenser, any O-ring, suction line,
the schroeder fill valve, and the high pressure pipe along the right
side frame rail. The last one is the most common, because the rubber
from the straps that hold it down deteriorates from engine heat, leaving
a lovely condition for bimetallic corrosion. Some cars suffer from low
pressure aluminum pipe leaks in the pipe beginning at the accumulator
that dips down running along the passengers side before turning 90* and
crossing above the splash pan (where it becomes a rubber hose) below the
front of the engine again becoming an aluminum pipe where it connects
to the compressor. The intake pre-heat shield or air intake tube rubs
against the aluminum low pressure hose causing it to break through. If
your schroeder fill valve is leaking, it is replaceable separately from
Could isn't the valve, then any O-ring in there or any bad installation. Check this guide as reference help DIY Air (click the links):
- Step 1
- Step 2
- Step 3
- Step 4
- Step 5
Hope help with this.
Posted on Sep 08, 2010
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Posted on Jan 02, 2017
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