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1996 Bonneville slow leak in AC

spit on Tue July 24, 2012 4:41 PM User is offline

Year: 1996
Make: Pontiac
Model: Bonneville
Engine Size: 3.8
Refrigerant Type: R134
Country of Origin: United States

I am experiencing a small leak, by small I mean I need to add a 12oz. can of of R-134 a couple of times in the summer. What/where are the most likely places that would be leaking. I have read the forum about the V5 compressor leaking in the body and the seals, are there any other problem areas I should look at?

thanks

Spit

brickmason on Tue July 24, 2012 6:26 PM User is offline

Check all connections for signs of oil leaks (which will usually be dirty from road dust)

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Just another brick in the wall

Had a little mule I fed him castor oil and every time he jumped the fence he fertilized the soil

GM Tech on Tue July 24, 2012 7:23 PM User is offline

V-5 compressor shaft seal and belly o-rings are definitely leaking if OEM..

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The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

spit on Wed July 25, 2012 11:56 AM User is offline

spit on Wed July 25, 2012 12:04 PM User is offline

I have looked over the connections and hoses, and I do not signs of oil leaks. I have had some luck in the past with installing used compressors (97 Chevy Blazer 97 Grand caravan 02 Explorer all worked out well) ) What do you think my chances are if I would install a used compressor? I know a number of reputable salvage yards and I can get one for under $40.
What would I look for or avoid in a used unit...obviously oil leaks and or corrosion on the case anything else? How difficult would it be for me to rebuild the current compressor? Would I need to purchase specialized tools? I am thinking about comparing the expense of one option to the other. Any thoughts welcome.


thanks

Spit

GM Tech on Wed July 25, 2012 1:14 PM User is offline

You'll step right back in the same pile that you stepped in to begin with......clean up your pile- reseal unit or go new.....I buy used pumps and reseal them---

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The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

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