Insufficient A/C

Has the AC been recently serviced with a new receiver/filter, vacuum pull down, and refrigerant?

 

Perspectives.

When I commuted, my Jeep (no canvas) sat in the Florida sun all day long. During the 35 minute drive home, with its a/c on full blast, it didn't reach really cold until about 5 minutes before arriving home.

My 1992 348 (designed for R-12 but converted to R-134) spends most of its time in my garage. Before rolling out its a/c is usually down to the 40s and stays very cold throughout the drive.

With that said, your 360 should blow as cold as all modern cars.

 

Hi Keith: My 2003 360 Spider cools pretty well in Honolulu's temperatures, which probably aren't quite as hot as you may get in the southeast. The maintenance schedule for the 360 seems to anticipate evacuating and recharging the system more often than in any other car I have owned. (But it also anticipates flushing and changing several other fluids more frequently, too.)

 

Also make sure the evaporator (the small radiator infront of the engine cooling radiator) is not plugged up with dirt and things like dead bugs. Of course a good AC shop will most likely check this out but you might want to take a quick look.

 

I too live in the Southeast (FL) and one thing you can do, and that I did on my 308GTB, and BB512i, is tint the windows, AND WINDSHIELD, with 3M Crystalline. It blocks about 98% of UV A and B (heat source) and is available in various shades. I used the least dark which has an ever so slight bluish tint..almost imperceptible. And the Crystalline is specifically made for curved surfaces.

This made a HUGE difference on the heat level in the cabin temp which is exacerbated by the large glass area of the windshield. It was about $500 / car and was well worth the price!

As an aside, we did our home with the 3M product which is specifically made for flat surfaces and it too made a big difference.

 

Do the tine, especially on the windshield as Don mentioned. You will not regret it.

 

Recharge the AC if it hasn't been done in a year or two. I started mine today and drove around nice and cool. It *should* cool as good as ant other car. My reference is 2008 cayenne and 2006 911.

 

My frame of reference was a 79 928 which AC NEVER worked and then a Boxster that had marginal AC. Cloth top let too much heat in on really hot SC days.

I give mine a charge with Freon every other year it seems, just go to Walmart and pick up a can with the hose/gauge combo. Access port is in the front of the windshield behind the panel in the front trunk. Takes 15 minutes to do with the car running. Add a little then check.. etc. I was actually surprised how well it works for a car of the vintage. Use a thermometer at the dash vent. I want to say I've gotten in the 50's coming out. Windshield will fog above the vent holes when I have it in use for a bit. As I understand the connection at the front radiator is not *perfect* and Freon can leak out over time. Set the control to coldest and vacuum out the ambient temp sensor on the right of the steering wheel.

 

Having had quite a few of those older 911's I can agree that the ac systems in those are woefully lacking thru 1985, two little vents under the dash. Doing the mods help some but still terrible.

 

Keith I would think it should do better than that. Did you try it on recirculating? I would think it should get down into the mid-40s or at least low 50s. (But, as I mentioned above, it doesn’t get that hot in Hawaii so I may be wrong.)

Good luck! Don’t give up yet!

 

For reference:

I took the 348 out this morning, first drive in a few months. I should add that it's last service was just before buying (12/2016) and I believe they did the a/c as well.

In the garage, during warm-up, the a/c temp went below 40 and stayed there. Settings were set at the lowest for temp and the highest for fan/blower. The recirculating valve (flapper) set to "close".

During the drive, the a/c temps stayed mostly below 50°, with outside temps in the high 80s. The cabin was comfortably cool overall, as cold air blowing on my face. However, my windows are clear glass (Canadian spec - no tint at all) so the 11AM sun was hot on my arm. Burning actually. With that, the cabin temps were rising slightly as time went by...

Also, this black/black car didn't have to sit in the Southern sun today either. Nor did I have to deal with any stop & go or stoplight to stoplight traffic.

When I arrived home, back in the garage, the a/c temps went back down below 40° - same settings as before.

Result? The a/c works well but the car is fighting with the Florida sun.

Also note, all late-model cars come from the factory with tinted windows (most are so dark you can't see into the vehicle).

Hope this helps.

 

[QUOTE="Keith Darby, post: 146690482, member: 212709" I am looking into tinting and found that tinting windshield below AS1 line is prohibited in SC . ( also prohibited in Florida and many other states) [/QUOTE]

And that is a problem? Just do it if you like. What's the worst that can happen, get a fix it ticket? Have to remove it? There are some great 50% ceramics that you can't even tell if the windshield was tinted.

 

I'm a fair weather guy, and hardly ever use my AC in my DD's and never in the 355. I can't imagine what you guy have to deal with down in Florida, when it gets above 80 here with 75% humidity I find it unbearable. And it gets to 102 there, I'd be in the house.

 

We make up for it in the winter when yours is stored and ours are still on the street.

 

Is a Sun Bird the opposite of a Snow Bird?

I need to head North for the summer. Or maybe April though October.

 

The state will never know...plus no one can tell the windshield is tinted! It's that slight, but very effective.