I may have to concede defeat.
#2090491
06/12/16 08:41 AM
06/12/16 08:41 AM
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Joined: Jan 2003
Posts: 27,728 places
79powerwagon
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Well, I cannot find any leak anywhere on my 1996 Suburban's AC system, but it clearly loses its coolant overnight. The dye isn't showing up anywhere, and I've had this thing opened up pretty good!
I don't know what else to do, so I guess I'll have to bite the bullet and take it in somewhere and have it fixed.
Any last minute ideas?
EDIT- Sorry, I thought I was in the General section.
Last edited by 79powerwagon; 06/12/16 10:41 AM.
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Re: I may have to concede defeat.
[Re: 79powerwagon]
#2090548
06/12/16 11:36 AM
06/12/16 11:36 AM
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Joined: Dec 2009
Posts: 20,662 in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,662
in a cattle trailer down by th...
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"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion. '74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion. 2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: I may have to concede defeat.
[Re: 79powerwagon]
#2090675
06/12/16 03:19 PM
06/12/16 03:19 PM
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Joined: Dec 2010
Posts: 1,035 Missouri U.S.A.
71yelladustr
super stock
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super stock
Joined: Dec 2010
Posts: 1,035
Missouri U.S.A.
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That's a pretty good sized leak you have there. I agree with a possible evaporator issue. If yours has rear air then you also have to look at the rear a/c components as well. The biggest cause of GM a/c leaks I see at my shop is the compressor. They will leak out of the front seal, which can be hard to detect without removing the clutch assembly. They also are prone to leak out of the center of the compressor where the two halves connect. Be looking for traces of refrigerant oil on hoses and system components. Don't overlook the check ports on both high and low sides. They are a common leak point. Good luck. Freon leaks can be a pain to find sometimes.
Last edited by 71yelladustr; 06/12/16 03:40 PM.
392 gen III hemi on E-85 727 trans Dana 60 10.02@134
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Re: I may have to concede defeat.
[Re: 79powerwagon]
#2091061
06/13/16 08:35 AM
06/13/16 08:35 AM
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Joined: Jan 2003
Posts: 8,681 Buford, GA
I_bleed_MOPAR
master
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master
Joined: Jan 2003
Posts: 8,681
Buford, GA
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Just about every time I had an evaporator leak, I could find the dye in the drain hose. (In case you haven't looked there. ) Tim
'71 Charger 383/727 '17 Challenger SXT (Wifeys car )
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Re: I may have to concede defeat.
[Re: 79powerwagon]
#2091695
06/14/16 11:40 AM
06/14/16 11:40 AM
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Joined: Jun 2008
Posts: 1,822 Colorado
denfireguy
top fuel
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top fuel
Joined: Jun 2008
Posts: 1,822
Colorado
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Thanks everyone! I'll look again before biting the bullet and having it fixed. The whole system is nice and dry and clean (no oil spots or grime build-up). Even under the compressor (the bottom) is dry and clean. Yes, it has rear air (the whole reason for buying a Suburban in the first place). Very frustrating indeed! I am with you on the rear air. Glad my Durango has it. But around here, rear seat warmers are the big deal. Drove to North Dakota without them in a rental car and never heard the end of that. Craig
2014 Ram 1500 Laramie, 73 Cuda Previous mopars: 62 Valiant, 65 Fury III, 68 Fury III, 72 Satellite, 74 Satellite, 89 Acclaim, 98 Caravan, 2003 Durango Only previous Non-Mopar: Schwinn Tornado
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Re: I may have to concede defeat.
[Re: 79powerwagon]
#2098126
06/25/16 09:02 PM
06/25/16 09:02 PM
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Joined: Jan 2003
Posts: 27,728 places
79powerwagon
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OP
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After not being able to locate any leaks, I got another dye set (this time UV) and loaded up the system again. Funny thing is, it stayed cold, I even took my dog to the vet and back this morning and it was nice and frosty in there! It's hot here, too!
So I was a bit hopeful it may have "corrected" itself, but alas, no. I went to get some take out BBQ tonight, and it was not cold at all. So at least I was able to run the system for about an hour and a half with it working. The dye should be well circulated, and when the sun goes down tonight, I'll have another look!
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Re: I may have to concede defeat.
[Re: 79powerwagon]
#2098201
06/25/16 11:43 PM
06/25/16 11:43 PM
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Joined: Jan 2003
Posts: 27,728 places
79powerwagon
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OP
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You guys were right! The compressor bottom and all around it is glowing with dye! No oil, no nothing, can't see anything without the light. But using the light, it's one big green mess! I checked everywhere else, only found a trace leak in a line that runs to teh rear. A quick look thru youtube found several indicating that problem and the repair for it. Time to go shopping! Thanks again everyone! And thanks for being patient with me posting this in the wrong place!
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Re: I may have to concede defeat.
[Re: 79powerwagon]
#2099449
06/27/16 06:12 PM
06/27/16 06:12 PM
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Joined: Jan 2003
Posts: 8,681 Buford, GA
I_bleed_MOPAR
master
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master
Joined: Jan 2003
Posts: 8,681
Buford, GA
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Dang chivvy guys. Glad you found it. Tim
'71 Charger 383/727 '17 Challenger SXT (Wifeys car )
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