AC not working

[draconianruler]

Originally Posted by IRA51

WITH GM vehicles it is very rarely the evap core, check the condenser for impact damage. GM compressors leak at the front seal a lot .

I had checked the condenser and traced the lines and no leak (at least that I can see with the UV dye). I'll double check everything this weekend again before going into the dash.

[Bimmer9938]

Usually they have a sensor that will shut off the condenser if the refrigerant is low or gone (so it doesn't burn out), remember to have the system pressured down before charging or you will have moisture in the system which can cause a blockage. Pay some money to have this done properly as you want to keep the high and low sides even. Using a dye in the refrigerant will help detect leaks as well. It's also a good idea to pressure down the system then replace the schrader valves on both high and low sides as they can cause a leak as they age as well.

[draconianruler]

Finally broke down and bought an electronic halogen leak detector and took apart most of the front trims. Just as I feared, my evaporator core is leaking somewhere. I removed most of the trim to be able to crack open the cover of the HVAC unit where the evaporator unit is. A/C leak detector goes crazy. Argh......looking at the directions to replace evaporator seems like I have to remove EVERYTHING in the front. I feel like crying Why couldn't it be something easy like the compressor.

Any suggestions on how to replace the evaporator without having to rip apart the interior and removing the HVAC unit?

[Bimmer9938]

http://stores.homestead.com/KwanChiK...lug/Detail.bok