British Slave
1/2 ton status
- Joined
- Jul 25, 2007
- Posts
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Rock Auto has one hose assembly left.
CK5
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Need advice: rebuilding the AC on my '91 Blazer
- Thread starter smier
- Start date
I just went through this whole thing. Be sure to get an AC Delco hose assembly. I ordered one through AZ and when it got here, it was totally different than the stock one. From the compressor, my hoses went in the downward direction to feed to the dryer and condensor (I think those are the names....mix them up). But anyways, the Murray ones went Up in direction and had a lot more hose and metal tubing. I suppose I could have made it work but it certainly wouldn't have looked very factory looking.
Get some new A/C Orings too. I picked some up at O'Reillys for about $5 or $10. An assortment pack with various sizes (green in color).
Get a new orifice too. I basically put in everything AC Delco and then brought it to the dealer for evac and coolant additives.
You will also need to add in PAC oil. I forgot which one I put in but if I figure it out, I'll let you know.
Rock Auto is a good source and also Right now auto parts.
http://www.rightnowautoparts.com/
Very quick shipping and came just as described. All AC Delco stuff.
You will also need to get a conversion type fitting so the R12 hose connections are converted for the shop's R134A connections. I missed this and the dealer charged about $50 for those fittings but it was already in the shop so I said OK. Probably could have saved a little if I got it at AZ......
Get some new A/C Orings too. I picked some up at O'Reillys for about $5 or $10. An assortment pack with various sizes (green in color).
Get a new orifice too. I basically put in everything AC Delco and then brought it to the dealer for evac and coolant additives.
You will also need to add in PAC oil. I forgot which one I put in but if I figure it out, I'll let you know.
Rock Auto is a good source and also Right now auto parts.
http://www.rightnowautoparts.com/
Very quick shipping and came just as described. All AC Delco stuff.
You will also need to get a conversion type fitting so the R12 hose connections are converted for the shop's R134A connections. I missed this and the dealer charged about $50 for those fittings but it was already in the shop so I said OK. Probably could have saved a little if I got it at AZ......
smier
1/2 ton status
I've got Cold AC again!!!! New compressor $280, O-ring set $5, r134A conversion kit $20, AC manifold guage set $49, can of AC flush solution $31, 5 cans of R134a @$15 each, orifice tube $3, and a $14 vacuum pump from harbor freight and 6 hours from start to finish!!! So far so good, I had one leak at the switch on the accumulator, just had to tighten it up a little. Blowing 47 degrees out the vents according to my thermometer. Thanks for all the help guys, if I have any issues I'll swap the evaporator and the condensor, but since my compressor hadn't actually come apart, everything was really clean inside so I thought I'd try and save $200 for now... Lots of stuff to do to this before I drive her 1400 miles one way in 6 weeks!!!
Confedneck
3/4 ton status
47 degrees aint bad, 42 would be much better, i'd add an ounce and recheck.
smier
1/2 ton status
Thanks, I need to get the duct work back together also, it's pouring cold air out from under the dash right now. Now to see if I have any more leaks. Thanks for the tip, I figure I've got the next six weeks to work the kinks out of the system.
4xcrazy
3/4 ton status
It will most likely cool down alittle more while driving as well, and if you decide to replace the condensor, I wouldn't worry about the evap much unless it's leaking.
KansasTwister
1/2 ton status
I've been having a guy at a shop do the ac work on my truck, but seeing your post makes me want to do it myself. Only thing we don't have are ac tools and a wheel/tire balancer. Everything else we do ourselves lol. Well excluding front and rear windshields.
smier
1/2 ton status
You know, I was amazed how simple the AC system really is. After doing a lot of research and manytrips to the parts stores to see what I needed and wanted to get, it wasn't bad at all. Best part is, even though it cost me quite a bit, I still figure I saved close to $500, and the compressor is starting to make noise on my mustang, so now I have the tools an knowledge on how to fix that one myself!!! So I just saved myself more money hopefully.
smier
1/2 ton status
Quick update!!! In the heat wave we had here in Pa last week I discovered why bare metal floors are not a good idea if you want to run AC... $39 at Lowes for a 4' x 25' roll of aluminized roll insulation and things are much better!!! Fixing all the air duct leaks under the dash and freeing up the temperature control helped as well, I'm now getting 44* to 46* out of the vents now. Looks like I'll be putting the rubber mats in from LMC, I really don't want carpet in this thing ever again...
89GMCK5
1/2 ton status
Condensor
Did anyone ever come across a new style condensor or a replacement that will work with our trucks? This same project is on my list for the spring of next year, been hunting some and hear a lot about changing them over, but very vague at best. Anyone have specifics on one that may have worked out well, drops in, works great with some modifications to mounts, etc.??
Did anyone ever come across a new style condensor or a replacement that will work with our trucks? This same project is on my list for the spring of next year, been hunting some and hear a lot about changing them over, but very vague at best. Anyone have specifics on one that may have worked out well, drops in, works great with some modifications to mounts, etc.??
4xcrazy
3/4 ton status
As far as I know, when I bought mine, I was told all the new aftermarket condensors are designed to run 134 freon. If I remember right, the new one I bought also had smaller diameter tubes and much more of them, which is what's needed for cooling the freon better and helping the compressors last longer as well.
smier
1/2 ton status
I never thought about it, but you may be right. Unfortunately, aside from ordering a new one to compare to an older one, I'm not sure how we would know for sure... The parts guys can only read the computer screens at most places anymore. Maybe a call to four seasons techline???? How funny would it be if the answer was right under our noses...
