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KyleT
User
Jun 1, 2010, 10:30 AM
Post #1 of 2
(3039 views)
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1991 Buick park ave
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1991
Buick
Park avenue
3800 3.8l
192,000
over the winter i had an issue with my heat it would only work on the right side of the car it gradualy got better so i didnt worry to much about it, But now my A/C which was working last year is not working this year it wont blow cold air it just kinda blows semi-cool.
Haven't tried much so far as dash work im completely clueless on, my brother gave me a bottle of R-134 that has the gauges on the bottle and stuff but i dont know what pressure the car is suppose to have to try it.
Thanks,
Kyle
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jun 1, 2010, 12:57 PM
Post #2 of 2
(3037 views)
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Re: 1991 Buick park ave
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Hi!
Watch out for stuff with gauge on tube cans. Not really enough info and you can kill it beyond practical fix if done wrong!
Is car converted to 134a? Would have been R-12 (Freon) new and most converted by now. R-12 not available without certificate and still pricey but we don't know what it needs yet.
First step is a plain "static" pressure reading. You do and should own gauges if you want to mess with A/C at all. Make sure that even the cheap sets show VACUUM #s on the dials or they are not too helpful if more is needed. Look at top of this section for what pressure should read system off at what temp. If below that don't do more yet.
Most issues stem from low charge. It cools some so that's a good sign. How fast the leak is a question hard to answer unless you can't find a leak, charge properly and see how long it lasts. Detection can require equipment and get pricey big time.
Do you have access to Autozone like places? Many have free loaner equipment and even the gauges for full deposit of safe return. If not then decide on if this is time to spend a few bucks to even do the basics. Cheap but useable gauges, can tap that will work thru gauges and some pure product should be available under $200. If a repair is indicated you'll want more or sub contract part of the job or all of it as tools can outweigh a one time job instantly and if wanted for long time it costs bucks for better stuff - what's new?
T
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