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A/C Dead for long time - possible to revive? 900 1992

posted by  spook on  Fri Jul 2 14:15 CST 2004
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last visit: Fri Oct 24 08:06 CST 2014
[RELATED]

Dear John,

Good p.m. I'm not an aircon expert. There are some brickboarders, with truly awesome expertise, and I hope they'll follow-up.

To detect leaks, a fluorescent dye is mixed into the a/c system oil. If there are leaks - even minute ones - they can be spotted with a black light. The dye glows under black light.

This is useful for leaks in all "in plain sight" components (hoses, tubes, fittings, etc). The evaporator, which is located under the dash, is hard to get to. To access the evaporator, most of the under-dash equipment (radio, climate control unit, storage tray, glove box, etc.) needs to be removed. This is costly because it is time consuming.

The system can be pressurized with air. If the pressure bleeds down, then there are leaks. It some fluorescent dye is introduced, the leaks can be found. If, after finding/curing obvious leaks, the system will not hold pressure (or hold a vacuum) the evaporator will need to be checked.

Hope this helps.

Have a Safe and Enjoyable Fourth of July Holiday.

Yours faithfully,

spook






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