if its still cold its not going to leak out anytime soon so you should be cool......Mine would leak out in like 2-3 days so I had to get that patch kit......If you get a recharge kit or patch kit it will tell you what to look for to fill it.....I have a 92 SC300 and your high side fill valve is in the same location as mine it ill be on the passenger side under the hood basically right line of the wheels and about 1.5 feet down. you could probly find a better explaination by search, if i remember right there is a picture showing it.

 

You guys rock! Thanks!

 

hi lexsc3, i think i have the same problem as your. my freon would leak out in less than a week! my mechanic believed its the evaporator unit and that will cost a lot to replace (about $400 just for the labor). so, i'm thinking about trying your patch kit method. could you tell me what brand and where you got it (pepboys?). i have 92 sc400, not sure if the valve location is the same as your. any help would be appreciated. thanks in advance!

 

Jewcano, I noticed this past winter that my heat (in the '92 SC400) wouldn't turn on at the start of the day either, and now the AC will put out some cool air, but it never gets really cold. Please post a definitive solution to this problem if/when you find it...

 

Well like most people i did that damn bypass, and what do you know it works You switch around some tubing and walla you get constant heat, as apposed(sp?) to whenever you want it....unless you let it draw air from the inside, then it doesnt get bad inside. The method helped, i'll try getting a pic up later of what its supposed to look like.

Ok, got the pics up:

 

Pics up