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Old 08-16-2002, 12:37 PM
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Post Mom's Air Conditioner

Mom's 1994 Buick LeSabre has intermitten air conditioner problems. The suggestion of " 480" four windows down and eighty miles per hour has worn off. It starts off with plenty of cool then if you stop and run into food store when you come back no air. I took it to dealer and they said needs new water pump and gasket for valve covers $ 900.00 NO THANKS! I took it to another service shop and it plenty of charge?? Another shop lets try new contol module $ 700.00 WOW everybody is guessing with my money. Mom says " Get it fixed or I will disconnect your street rod" I need suggestions or blow some cool air toward Indianapolis. Dave E Shank

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Old 08-16-2002, 02:53 PM
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Does it have Automatic Temperature Control?
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Old 08-16-2002, 09:21 PM
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I have a 91 century that does the same thing.I think its just a poor design.Comes right back when you step on the gas right???
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Old 08-17-2002, 02:00 PM
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My work truck does the same thing but that allows you to raise the idle speed and keep cold air flowing. tell mom to carry a brick along for when she goes into a kwiki mart and keep those r's cranking.
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Old 08-17-2002, 09:29 PM
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Doesn't have Automatic Temperature Control. Also doesn't appear to be RPM related. It is on cooling your body and then warmer air, sometimes semi-cool, some times will start sending out cool air again? Took off shroud under dash board to see if ice cubes had melted but nothing but twenty eight miles of wires going no where. Still searching for solution. Mom says no Frog Follies in Evansville next weekend if she isn't getting cool. HELP!! Dave E Shank

[ August 17, 2002: Message edited by: Dave E Shank ]</p>
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Old 08-17-2002, 10:54 PM
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Check your e-mail Dave, I have sent you some info that might help.
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Old 08-17-2002, 11:09 PM
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Been awhile since I studied ac Dave, but you may have moisture in the system. From what I remember the ac will appear to be fully charged, but after a few minutes of run time, it will freeze up. Deosnt seem like a belt problem since rpm makes no difference. Does the compressor clutch stay engaged? You should be able to tell when it "clicks" on or off. <img src="graemlins/sweat.gif" border="0" alt="[sweat]" />
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Old 08-17-2002, 11:18 PM
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Also need to make sure your condenser is clean and in good shape! Please let us know how it goes, and good luck!!!
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Old 08-18-2002, 03:03 AM
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I think this has a high temp cut off switch on the pass side of rad, That go bad all the time it snaps in to the rad.
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Old 08-18-2002, 05:56 AM
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could be vacumn related...when you loose vacumn, the doors on the a/c unit close, warm or hot air blows thru until vacumn is restored and opens the doors again, allowing cool air to once again exit the vents. Usually happens when you are accelerting. You should have a vacumn canister located somewhere under the hood that is plumbed in line with the a/c system and the vacumn source from engine(usually in the intake behind the carb or throttle body). If you have a busted hose or canister, this may be contributing to the problem. I run into this same problem with my streetrod because I was pulling vacumn directly off the intake to operate the vacumn solenoids that make the doors open on the a/c unit. Every time i would give it throttle, I would loose vacumn, and loose the cool....solved it by putting in the vacumn canister system robbed off a Ford AeroStar van....works great now...hope this may point you in the direction you need to be headed to fix the problem...PACO
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Old 08-18-2002, 03:34 PM
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Your liquid line strainer has probably got junk in it. Its replaceable. Takes special tools to do the job. A good shop should beable to do it in about 2 hours,Including reclaiming the refrigerant
and recharging the system. Your probably looking at $120.00 to $150.00.
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