Help: 99' A/c Compressor Freon Fill Tips

[kool7]

Hi All , I need some tips on how to add the oil and freon for a 1999 Blazer. Picked up a compresser from auto zone and was wondering how install the stuff to get me up and going ..

how much oil ?
how much freon ( cans) ?

thanks much !!! joe in las vegas ....

[Southern Comfort]

The info is under the hood on a a label. It tells you how much oil and how much freon to use per manufactures spec. Look on fender wells and or underside of the hood.
SC.

[Teal95Jimmy]

I would also suggest getting a pressure gauge, whether it be an inline one with the filler or seperate, gives you a good idea of where the charge level is.

[rlith]

Some of you may remember my Hotshot Mod from back in 2004.... http://www.s10forum.com/forum/showt...ht=hot+shot+mod

Essentially Hotshot is a freon replacement for r12, r134, and r504 freon that's compatible with all oils. The code for Hotshot is r414b.

Well I bring the subject up again because of recent issue (or ongoing depending on how you look at it).

I've not turned on the AC much this year because my compressor had a bad clutch bearing in it and it was really driving me nuts. Every time my wife would pull out of the driveway I could hear the compressor grind at idle (went away when you gave it gas).

Finally I got off my lazy butt and instead of changing just the bearing then gapping the clutch properly and all that happy crap, I simply just got a new compressor from Advance (128.00).

So we removed and replaced everything. Takes about a 1/2 hour to load in the oil and throw the new compressor in and get everything back together at Grapplers.

So I go over to my clients house (he's an HVAC tech) and he whips out the r414b tank (AKA Hotshot). Vaccumes out both the high and low side (be surprised about the amount of pressure that builds with normal air in a ac system from engine heat). Loads up 1pound, 12 oz of hotshot (10% less than r134).

So he has me crank up the car, put the ac on MAX and the fan on high., Whips out his freon detector and starts checking for leaks...Found none at highest sensitivty.

So we give it a couple of more minutes and he pulls out both the laser thermometer and the wired one.

Right (glovebox) vent, 38 degrees, both center vents: 31.2 degrees final reading, driver's vent: 39 degrees final reading. Yes, eventually stuff freezes up, stops for a minute and comes back on, this is a normal cycle even with r134.

So all in all, I still can't reccomend this stuff enough!

Apparently in the industry it was originally said that r134 was going to be it for cars, fridges, freezers, et-al. Apparently this isn't the case. The industry is moving towards r414b and other similar freon formulas because of how crappy r134 tends to be overall.

So look for this stuff and similar replacements to r134 people. We'll all be much happier...(I'll be happiest if I could switch to some sort of peltier cooler...sigh)...

On your next recharge, find a local hvac person and ask for Hotshot, r414b refrigerant, shit can't be beat!!!
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