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| (Finished) Putting AC on the XFi; Finally have cold air in the Metro! | |
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| Tweet Topic Started: Nov 4 2012, 06:19 PM (4,245 Views) | |
| GeoZone | Nov 4 2012, 06:19 PM Post #1 |
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OK, so I got R134a parts off CL from a 1994 hatch to include a compressor, Evaporator, Drier, Condensor, blower, AC lines and some hardware. Pulled a compressor bracket off the 92 vert at the junkyard along with the idle switch thingy. I know nothing about A/C but figured I'd just start bolting stuff on and sticking it together. Will post pics as I go. All advice appreciated.
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| Scoobs | Nov 4 2012, 06:39 PM Post #2 |
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:D
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Good Luck! Its a fun addon, i added a/c to nightmare, what a difference. Make sure you check your sensors if one is bad the a/c will not turn on. |
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| 91 ragtop | Nov 4 2012, 07:28 PM Post #3 |
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Did you get the wiring harness that goes behind the dash and out under the right side fender too. All the plugins to make the A/C work are in that harness. Ken.......... |
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| GeoZone | Nov 4 2012, 08:21 PM Post #4 |
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Nope. I was under the false impression that all the wiring was there already and just needed to "plug and play". So I have hit my first hurdle. Maybe Scoobs has one in that big pile of stuff he's getting rid of? So I bolted on the bracket and the compressor and thought that one of the plugs fit into the compressor plug and this is what I found. |
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| GeoZone | Nov 4 2012, 08:22 PM Post #5 |
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So I'm assuming I need that harness eh? Those two plugs don't look like mates. |
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| Scoobs | Nov 4 2012, 08:43 PM Post #6 |
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:D
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The plug on the right goes to your ac compressor. The one on the left goes to the main ac harness in your engine bay. The harness that the ac idle adjustment goes to on the firewall aswell as your fuse block relays and fuse. |
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| GeoZone | Nov 4 2012, 08:46 PM Post #7 |
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OK so that plug on the right is attached to the compressor I just installed but there is no mate for it. I'm assuming that I need the "main ac harness in your engine bay" . Got one? |
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| Scoobs | Nov 4 2012, 09:25 PM Post #8 |
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:D
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I might. Ill look tommorow through my stuff. |
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| GeoZone | Dec 5 2012, 10:00 PM Post #9 |
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So this past weekend I went and picked over a parts car and pulled all the harnesses I think I need will try and get some pics up here this weekend. I hadn't realized there was a harness under the dash as well or that I needed the relays out of the fuse box. Probably more fun stuff for me to find out. |
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| bkgeig | Dec 6 2012, 12:58 PM Post #10 |
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I just finished the AC install on my 93; got it back from the AC shop on Monday. I made some of the same mistakes you did, mainly assuming everything was pre-wired under the dash. I pulled the under-dash harness from a '89 or '90 while I was in VA. I can confirm that the underdash harness is not identical between MK2 and MK3. The connector at the end of the AC switch is different. I got it to work with disconnects, but the two non-black wires (don't recall the exact colors) need to cross-wired, if that makes sense. One suggestion, your '94 system is R-134. Your '93 would have come with R-12. In our small systems R-12 is more efficient. The AC guy I worked with installed R-12 in mine, even though mine like your's came from a '94 (actually it looked to be a hyrbid R12/R134 system). He had to do some work on my system since someone, possibly the junkyard, cut the low pressure line. I paid about $125 in parts and $190 at the AC shop. One other suggestions, DO NOT pull your dash like I did to install the harness. Scoobs is right, just run it behind the glovebox and stereo. There will be a green connector at the driver's side end that is supposed to connect to a harness at the accelerator. Your car won't have that accelerator harness pre-installed. If you didn't grab it at the junkyard, don't worry about it. Just let the green connector hang loose. It is designed to cut off the AC when the pedal is floored. I've always been in the habit anyway of manually turning off an AC on small engines when accelerating or going up a hill (I don't have to worry about it on my diesel pickup). I have a short thread about my recent install on this site. Good luck. - Brian |
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| GeoZone | Apr 7 2013, 09:43 PM Post #11 |
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OK, so one of my many Metro goals for the short cool season in southern AZ was to find all the AC parts I need for my '93 XFi, install those, and be able to drive in the cool this summer.Well, I did that. Found most of what I need on CL and pieced together the rest over the last few months; just installing as I got it. I believe now I have everything ON the vehicle except a belt. I know pretty much zero about AC and my original plan was just to get it all on there and then take it to an AC shop and have them do the charging and filling and vacuuming and whatnot..But it's getting hotter and my bank account isn't so hot so I'm wondering if this is a job I should tackle myself. I know it takes some special equipment and gizmos and probably some special tricks. What say you Geo masters?
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| 00Metro | Apr 7 2013, 10:23 PM Post #12 |
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Basics you would need is vacuum pump and gauges. Shop around and see what an AC shop would charge for vacuum and charge. Thing is they may or may not check for leaks. Kinda suck if they filled you and it leaked out a month later. Ain't no guru...my .02 worth
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| GeoZone | Jul 7 2013, 05:04 PM Post #13 |
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| Scoobs | Jul 7 2013, 05:19 PM Post #14 |
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:D
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If you dont mind my input, but why did you jumper the connector for the thermostat in the evaporator? |
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| GeoZone | Jul 7 2013, 05:33 PM Post #15 |
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So yesterday I finally got cold air to blow through the vents of my 93 XFi . This has been a long road, but honestly, I took it slow and didn't work too hard on it. I ran into a few snags so I'll relay what I've learned in order to potentially help the next guy.My strategy was to find a donor vehicle and just basically move all the parts over to my vehicle, then take it to the shop and have them charge it and test it for leaks. OK, so the first step is to know what all parts you need, which I didn't, and didn't figure out until the end. I started this post sometime back in the fall of 2012 and didn't finish until July of 2013. My goal was to git-r-done before it got hot, but I was lazy and didn't get-r-done in time until it really got crazy hot which was quite a motivator (it's 110*F today!) So I should have kept this post going as I did what I did but I didn't so I'll just have to recap as best as I can. First, I located some AC parts on Craigslist. The fellow pulled them out of his donor vehicle and sold those to me for cheap. These consisted of the major parts: Evaporator, condensor/fan unit, compressor, and A/C lines. ![]() This site helped immensely in finally identifying parts GM Parts Giant Edited by Metromightymouse, May 15 2017, 11:11 PM.
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OK, so one of my many Metro goals for the short cool season in southern AZ was to find all the AC parts I need for my '93 XFi, install those, and be able to drive in the cool
this summer.
Found most of what I need on CL and pieced together the rest over the last few months; just installing as I got it. I believe now I have everything ON the vehicle except a belt. I know pretty much zero about AC and my original plan was just to get it all on there and then take it to an AC shop and have them do the charging and filling and vacuuming and whatnot..
and my bank account isn't so hot so I'm wondering if this is a job I should tackle myself. I know it takes some special equipment and gizmos and probably some special tricks. What say you Geo masters?
and didn't get-r-done in time until it really got crazy hot which was quite a motivator (it's 110*F today!) 
7:54 PM Jul 10