slick Posted July 7, 2007 Report Share Posted July 7, 2007 I have read that R-134 converted systems(if yours was flushed then switched to R-134 omit this) from R-12 just by the retro fit never do get as cold as the old R-12. Quote Link to comment Share on other sites More sharing options...
intern8tion9l Posted July 11, 2007 Author Report Share Posted July 11, 2007 looked into it a bit more....the compresser will not engage for the defroster either; nor will the secondary cooling fan. however i think the fan needs to sense refridgerant moviong to turn on? one thing i was thinking was that since my power steering AC cutout switch is broken maybe that would cause it...but i jumped the connector and still nothing.... Quote Link to comment Share on other sites More sharing options...
shyguy164 Posted July 11, 2007 Report Share Posted July 11, 2007 Hmmm. My a/c system is fully charged w/134a, and blows COOLED but not cold air. I have checked the blend door, had the system evac'ed and recharged, and still it isnt cold at all. It holds a charge jusr fine, the compressor engages and runs as it should, the lines to the core up near the radiator get condensation on them, but it just blows slightly cooled air. I am lost on this one... it should be working fine.... Maybe I just need a new evaporatot, condenser, and orofice tube? If our systems even hae an orofice tube... Recheck the blend doors, make sure when you say cool (as in no heat), the blend door(s) are in the full cool position. Make sure your blower is working properly. Check for holes in the ductwork. Make sure your condensor is clean and the fins aren't all bent up and shit. The only time you should have to replace your condenser or evaporator is if they leak. I'd consider replacing the orifice tube, I guess there's a little screen in there that can get clogged up. Or if something passed through it (quite unlikely though) and made the orifice larger than it should be. Also consider replacing the accumulator. An A/C shop should be able to diagnose this pretty easily for you. Depending on how old the compressor is, the valves could be bad/going bad and it's not really compressing the refrigerant as it should be. Quote Link to comment Share on other sites More sharing options...
intern8tion9l Posted July 11, 2007 Author Report Share Posted July 11, 2007 the condensor is only about a year old. it had a huge hole in it, so i replaced it myself and had a shop do the pressure test/recharge. its just strange that everything was fine until the motor swap. somethings gotta be messed up there. (trying to avoid a shop, haha) Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted July 12, 2007 Report Share Posted July 12, 2007 I forgot the name of the damn sensor, but i believe its on the high pressure line by the accumulator ( sp? ) and maybe that went bad? I can look in my shop manual and see what that says about all this... Quote Link to comment Share on other sites More sharing options...
intern8tion9l Posted July 12, 2007 Author Report Share Posted July 12, 2007 yeah but if it was that sensor(i think i know the one you mean) wouldn't the compressor still kick on with the defroster? Quote Link to comment Share on other sites More sharing options...
99RegalGS Posted July 12, 2007 Report Share Posted July 12, 2007 No it wouldn't. That sensor is there to protect the compressor, and if it thinks the system is low on charge, the compressor will not kick on. Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted July 12, 2007 Report Share Posted July 12, 2007 if the pressure is too low or too high it wont turn the compressor on. Quote Link to comment Share on other sites More sharing options...
rockfangd Posted July 12, 2007 Report Share Posted July 12, 2007 that switch can be a lifesaver Quote Link to comment Share on other sites More sharing options...
intern8tion9l Posted July 13, 2007 Author Report Share Posted July 13, 2007 ok so this sensor has 3 connections on it...which ones do i jump together to see if i can bypass it? Quote Link to comment Share on other sites More sharing options...
joey b Posted July 13, 2007 Report Share Posted July 13, 2007 I was having trouble jumping the wires. I once read on this forum that the A/C system is dependent on external and Cabin temperatures. The Cabin temperature sensor is located below the glove compartment. I am assuming that you have the digital climate control? Quote Link to comment Share on other sites More sharing options...
intern8tion9l Posted July 13, 2007 Author Report Share Posted July 13, 2007 yeah and i did the test on that interior sensor, it is working. this friggin sucks Quote Link to comment Share on other sites More sharing options...
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