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  #1  
Old 08-02-2008, 02:48 AM
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recharging r134a (DIY)

Is it difficult to do?

My 88TE was switched over to r134a. If I buy a kit + refridg. can I do it myself and if so, what are the steps involved/anything I need to know?
Is it simply plug in, turn on engine, crank AC to full until can is empty?

Much appreciated
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Old 08-02-2008, 10:58 AM
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It's really not that simple. You have a recipe for air in your system, plus a chance of overcharging.
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Old 08-02-2008, 11:20 AM
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If you can read and follow the directions precisely, go for it. Just buy the kit that comes with a pressure gauge, obtain the factory pressure specs. and don't overfill. If your a bumbling idiot and can't figure out where the hood release is, let someone else do it.
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Old 08-02-2008, 11:29 AM
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Quote:
Originally Posted by 450slcguy View Post
If you can read and follow the directions precisely, go for it. Just buy the kit that comes with a pressure gauge, obtain the factory pressure specs. and don't overfill. If your a bumbling idiot and can't figure out where the hood release is, let someone else do it.
Well I have never done it before so I was just checking if AC recharges differ between models or the procedure is the same. By the sound of it, it seems pretty much universal so I shouldn't have any problems.
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Old 08-02-2008, 11:42 AM
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Be sure to purge air from the hose and fitting before you put it into the system.

And there are two types of systems, CCOT as used in most American cars, and TXV as is used in many European cars. We have TXV, and the directions of the kit will assume that you have CCOT. You really should have two pressure gauges (low and high side) for either system, though.
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Old 08-02-2008, 07:52 PM
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Search the Tech Forum for posts by the God Of Daimler A/C = Larry Bible.
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Old 08-02-2008, 08:23 PM
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you will need to pull a deep vacumm as well. there is more than likley moisture in the system that needs boiled out. i would completely open the system flush all of the old oil out(possibly mineral if it was done incorrectly) replace any orings that you undid and replace the filter/drier
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Old 08-04-2008, 12:45 AM
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You have to pull a vac fro at least 45 minutes. When you charge multiply the r-12 spec by .8 to obtain the correct 134 charge
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Old 08-10-2008, 04:34 PM
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The low side is on the right hand side of the engine bay with the blue cap correct?
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Old 08-10-2008, 05:39 PM
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Ok so I checked the pressure and it was dead on 45psi (FULL!)....

...but its not blowing cold??? Any ideas?
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Old 08-11-2008, 01:52 AM
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whats the high side and ambient temp
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Old 08-11-2008, 11:10 AM
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Quote:
Originally Posted by ps2cho View Post
Ok so I checked the pressure and it was dead on 45psi (FULL!)....

...but its not blowing cold??? Any ideas?
Don't believe that gauge.
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