Auto Air Conditioning & Heater Repair: adding freon, c lines, refrigerant charge

Question
My ac is not as cold and I was trying to find the valve for adding freon It is a 1997 buck lasabre 3.8 engine

Answer
Jim,

I can't say that I have ever been on a lesabre, so exactly where it is I am unable to say. And I have absolutely no literature on a 97 lesabre. I will however tell you where they usually are or how to find it.

Typically you will find the low pressure port on the passenger side of the engine compartment close to the strut tower. It should have a blue cap on it or a black cap with the letter "L" on top.

If it isn't jumping out at you... find where the A/C lines enter the firewall. Trace the colder of these two lines (with the compressor running) back into the engine compartment. The low side port will be either mounted directly on a hard portion of this line, or on your accumulator (an aluminum canister roughly the girth of a soda can with two hard lines coming from the top of it.)

If it is easier to trace it starting at the compressor (I'm not sure how cramped your engine compartment is) Do the same thing starting there. Trace your colder line back towards the firewall and you will com across it.

Now... being that you say the A/C isn't blowing as cold as it should be, take a couple things into consideration. How hot is it outside now in relation to when you are comparing it too? The A/C system is only designed to drop the temperature between 35-45 degrees from the outside air. So, if it is 100 degrees outside, and your a/c is blowing 65 degrees, it is working as it is designed, and you risk overcharging the system if you add any to it.
If it is not cooling as it should because you do have a low refrigerant charge, then it goes without saying that you have a leak that you might want to have found and repaired.

Ok, thank you for the question and I hope I was abe to help a bit even though I couldn't take you directly to your port. If I can be of any more assistance, please let me know. Good Luck.