Air Conditioning Problems... February 16, 2006, 06:52:26 PM Ok, after evacuating the air conditioning system on the car, I proceeded to purchase a R-134 conversion kit. Now, I don't want to hear any "That stuff doesn't work" etc, comments. I used this same kit on my V6 LX and it worked fine. Anyway, I hooked up the valves and turned the car on, and set the Climate Control to A/C, 60 degrees, fan on Hi. I hooked up one of the R-134 cans and proceeded to let the stuff flow into the system. However, I cannot get the clutch on the Compressor to engage. Therefore, the R-134 isn't being sucked into the system. I unhooked the Clutch Cycling Switch above the A/C dryer as I was told to do, but it had no effect.Now, keep in mind, I have seen from time to time the Clutch engage, but for only split second. Also, the belt running over the compressor runs just fine. Not loose, slipping, etc. The clutch just won't kick in. What can I do? Again, I tried bypassing the pressure switch over the Dryer but that didn't work. I'm sure the compressor isn't bad, bacause I've seen the clutch move. And the belt runs just fine over it.What do I do? It's going to be hotter than hell here in Tucson in mere weeks, and I want to do this myself. Quote Selected
Air Conditioning Problems... Reply #1 – February 16, 2006, 09:07:04 PM Quote from: DMC24guy I cannot get the clutch on the Compressor to engage. Therefore, the R-134 isn't being sucked into the system. I unhooked the Clutch Cycling Switch above the A/C dryer as I was told to do, but it had no effect.Now, keep in mind, I have seen from time to time the Clutch engage, but for only split second. Also, the belt running over the compressor runs just fine. Not loose, slipping, etc. The clutch just won't kick in. What can I do? Again, I tried bypassing the pressure switch over the Dryer but that didn't work. I'm sure the compressor isn't bad, bacause I've seen the clutch move. And the belt runs just fine over it.What do I do? It's going to be hotter than hell here in Tucson in mere weeks, and I want to do this myself.Is there voltage on the green/pink wire(plug on the pressure s/w)? If jumping the G/P wire to the pink/blue wire dosn't start the compressor, there is possibly a problem in the IRCM... If there is voltage on the g/p wire you can jump it to the black/yellow wire on the compressor... It will have to run(asuming the compressor ground circuit is OK) Be careful and DO NOT jump to the ground side of the compressor(grey/white)... Quote Selected
Air Conditioning Problems... Reply #2 – February 16, 2006, 09:13:12 PM at that point has the car been run up too temprature? just a thought....not sure if it would make a differance or not...grasping at straws realy... Quote Selected
Air Conditioning Problems... Reply #3 – February 16, 2006, 09:20:02 PM Run up too temperature????I haven't tried connecting the Green/Pink wire to the Yellow/Black wire on the Compressor yet. It's dark now, so I'm going to have to get a flash light and a can of pesticide to take care of this problem. Quote Selected
Air Conditioning Problems... Reply #4 – February 16, 2006, 10:17:12 PM I should mention that when I jumped the wires on the Pressure Switch located above the dryer, it turned one of the fans on. Doesn't something seem wrong about that? Quote Selected
Air Conditioning Problems... Reply #5 – February 16, 2006, 11:08:13 PM Quote from: DMC24guyOk, after evacuating the air conditioning system on the car, I proceeded to purchase a R-134 conversion kit. Now, I don't want to hear any "That stuff doesn't work" etc, comments.They're called "death kits" for good reason.QuoteI should mention that when I jumped the wires on the Pressure Switch located above the dryer, it turned one of the fans on. Doesn't something seem wrong about that?No. The fan comes on to provide airflow over the condenser so the high pressure doesn't spike up and blow the compressor. The fan coming on is a good sign.I would first supply 12V directly to the clutch to test it. If it comes on, you know you have a shorted/open circuit or a bad relay somewhere. Quote Selected
Air Conditioning Problems... Reply #6 – February 17, 2006, 03:10:49 AM you should take it to the shop that did your tranny work:flame: sorry i had to Quote Selected
Air Conditioning Problems... Reply #7 – February 17, 2006, 05:22:55 PM Quote from: TurboCoupe50Is there voltage on the green/pink wire(plug on the pressure s/w)? If jumping the G/P wire to the pink/blue wire dosn't start the compressor, there is possibly a problem in the IRCM... If there is voltage on the g/p wire you can jump it to the black/yellow wire on the compressor... It will have to run(asuming the compressor ground circuit is OK) Be careful and DO NOT jump to the ground side of the compressor(grey/white)...Hey, I hate to tell you, but there are two seperate wires coming out of the Switch above the dryer. One is Pink and the other is Green. What am I supposed to do, merge both wires together and to the Black/Yellow one???? Quote Selected
Air Conditioning Problems... Reply #8 – February 17, 2006, 05:38:07 PM Bud if you re-read Toms post you will understand that he is saying to not jumper the cycling switch but jumper from the Hot wire (mine is a different color than what both of you are stating) on the cycling switch STRAIT to the compressors black /yellow wire. This will bypass the A/C WOT Cutout relay.Oh and when I first repaired my A/C system, Both the cycling switch and the WOT Relay were bad. Quote Selected
Air Conditioning Problems... Reply #9 – February 17, 2006, 05:53:25 PM Ok guys, here are the pictures to show you what I am seeing. Now, I am NOT an idiot, but i'm just having a real hard time understanding what you guys are telling me to do. I'm ASSUMING this is the Cycling Pressure Switch above the dryer correct? If that is the case, as you can see, there is a Pink wire, with a Blue Stripe, and a Green Wire with a Black Stripe. This is part one of my confusion. You guys keep saying Green/Pink wire, yet there is none. There is a Green wire and a Pink wire, but not both combined into one.This is a view of the Compressor. The only thing I understand is I'm supposed to connect some wire to the yellow one on the left side. Right?Ok, with that explained, someone please visually help me. What goes to what!? Quote Selected
Air Conditioning Problems... Reply #10 – February 17, 2006, 06:38:48 PM The way I read this is that your car is equipped with Auto Temp. Control. Are you getting any fault codes if you run a self test? Quote Selected
Air Conditioning Problems... Reply #11 – February 17, 2006, 10:57:51 PM Connect that pink/blue to that black/yellowBUT Don't run it long if the system is not taking any freon. You risk burning up the compressor. You may need a new orrifice (sp?) tube. Quote Selected
Air Conditioning Problems... Reply #12 – February 18, 2006, 02:47:04 PM Ok well now what? I ran the Pink/Blue wire to the Black/Yellow and the clutch didn't engage. Heck, I even ran a line from the Battery to that Black/Yellow wire and it still didn't come on! There's no way your going to get me to take it into some place and get laughed at, so I'm stuck fixing this problem myself. What's the next thing I should do? I've heard something about the ICRM, something about an orifice tube, possibly a Bad Cycling Switch or "wot", where do I start???? Quote Selected
Air Conditioning Problems... Reply #13 – February 18, 2006, 03:02:21 PM Have you applied 12V and ground to your clutch yet? That should have been step #1. Quote Selected
Air Conditioning Problems... Reply #14 – February 18, 2006, 03:04:00 PM How do I do that? Which wire is 12v and which is ground? Quote Selected
1988 Thunderbird Sport, Former 4.6 DOHC T56 conversion project. 
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