Question about 1991 Cadillac Fleetwood

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1991 cadillac fleetwood ac

I purchased this vechicle with no refrigerant in the ac system. The access fitting has an adapter for R134a. Can I assume the ac has been updated to it?

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If there is a retrofit sticker in the engine comartment, then it was professionally done. otherwise i would have it checked

Posted on May 26, 2009

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What kind of ac coolant does it have 134a or r 12 and where is the low pressure port for the ac located


Depends on the year. Cars in the early 90's used R12. Anything later uses R134a. The size of the charge ports will define the R134a port. An adapter is needed to fit on the charging hose. R12 requires no such adapter. Ther charging label under the hood will tell you what refrigerant is needed too. Since you failed to give enough information on what make and model car you have, a general answer for the location of the low pressure port will be given. On the compressor, the larger diameter hose connection is the low side. Connect there, or look for the drier/accumulator (Large diameter silver container near the firewall). Connect there. You will need to access the AC information label under the hood to determine how much freon to add to the system.

Mar 12, 2016 | AC Cars & Trucks

1 Answer

I have 1991 Cadillac Fleetwood and need to remove ac compresser


If the compressor locked up the chances there are metallic parts in the rest of the system are great. Flushing out the system is best left to professionals. If your system has not been converted from R 12 freon to R-134a freon, now's the time to do it. The oil in the R-12 system is not compatible with r-134a. If there is still freon in the system you cannot simply discharge it into the air.. The fine is huge. Have an AC shop do the work.

Oct 21, 2014 | Cadillac Fleetwood Cars & Trucks

1 Answer

R134a refrigerant


There is a very good chance your ac system was originally charged with R12 freon. If it was, someone will need to convert it to R134. That may require changing the receiver drier and some gaskets along with the adapter fittings for freon gauges.

Jul 01, 2013 | 1993 Land Rover Range Rover County

1 Answer

A/C Compressor Compatible with r134a?


Yes, you can buy a small kit with the adapter fittings and use R134. You can not add R134 if the system has R12 in it now.

Jun 13, 2013 | 1991 Chrysler LeBaron

1 Answer

Im trying to recharge my ac in my 91 nissan pickup and im pretty sure i know where the lowside ac port is but the hose adapter from my recharge kit does not fit snugly on the fitting?


Your 1991 will have R12 refrigerant in it unless it has been retrofitted to the newer R134a refrigerant. If it is still factory original then you will need to retrofit it to the new refrigerant, or see if you can find some R12. R12 has been discontinued years ago and if you can find it it is very expensive.

Aug 29, 2011 | 1991 Nissan Pickup

1 Answer

How do you put refrigerant for the ac?


Hello,

The refrigerant needed by your lumina is the freon(R134A) gas which can be purchased at the auto parts store.
Please follow the instructions below carefully.

1.To install freon in your 98 lumina you will need to purchase the freon (r134a) and a hose kit from your local parts store.

2.locate the low pressure side of your ac system, usually by the radiator, but sometimes next to the condenser. The hose will only fit on one, so if it doesnt fit on the first you find, find the other.
3.Afterwards,with the car running and the ac on full blower,puncture the can and allow freon to flow freely into the system.

You are done.


Thanks for using fixya.

Mar 17, 2011 | 1998 Chevrolet Lumina

1 Answer

Freon and connector for 1986 buick lesabre


there are two hoses coming out of the firewall side by side .. one is large and one is small ... they both have valve ports but only the large tube (low pressure side) is to be used for adding refrigerant .. if your connector from the R134a can does not fit ..then you probably have the older R12 system .. that has been outlawed now because of ozone layer destruction caused by it ..you cant get that anymore .. you can however convert your system to R134a but it involves washing out the entire system and replacing all rubber parts ..then attaching adapters so the R134a will connect (availible auto parts) .. by law any remaining R12 in your system has to be recovered, not vented to air .. (actually the r12 is worth a fortune right now but it may not be legal to sell ..its about a 25 times increase) ... the modification process requires a "certified" tech to do the work and the results wont be quite as good as the old r12 ... at least it will work if the system is cleaned out enough .. the two refrigerants dont like each other .. that is, the lubes that are used do nasty things when mixed .. if you wanted to you could become "certified" by attending some classes and passing a test on ozone layer depletion ... now they have discovered that r134a is a powerfull green house gas .. so that also will be phased out in the future .. its like 1600 times worse than CO2 ... r12 was a wonderful chemical .. very hard to beat its performance and stability .. .

Jul 05, 2010 | 1986 Buick LeSabre

1 Answer

What could be the problem my AC blow fine while im driving. But when I stop it began to blow hott wat could be the problem.


You are low on Refrigerant either R22 or R134A depending on what was used. If it is R134A you can get a refill can and gauge at Walmart, if it is R22 you are most likely going to have to convert your system since R22 is not available for sale to do it your self type folks.

Jun 26, 2010 | 1994 Cadillac Fleetwood

1 Answer

Cadalliac 1991 Fleetwood 4.9 v8


Hows the A/c cooling? F46 is a a/c refrigerent problem.. If its at the right level, it could cause the a/c compressor to rapidly turn on and off, causing a surge feeling.

Apr 29, 2010 | 1991 Cadillac DeVille

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