Stan944

Today was the first hot day here, and I ran AC. Traffic was very bad, and it was stop and go for half an hour. The engine temperature went half way of the scale (2nd bar), while it usually stays around 1st bar. I don't know how hot it would get if I kept driving.
So the question is whether AC on makes the engine hotter (heat release from AC makes the water radiator warmer) or colder (both funs on all the time)? Under stop and go condition, with almost no cooling from the air flow from the speed of the car.

Imo000

Yes, the AC condenser heat will slightly elevate the ratiator temps but not to the point that the car will over heat. If it does, your cooling system is not 100%. You can test this by letting your car idle in the driveway with the AC on full blast. Watch the temp gage, it shouldn't reach the red zone.

austin944

My '84 hits the second tick (pointing straight up) with the A/C on in stop and go traffic. The additional load from the A/C compressor on the engine makes it work harder.

White Pony

My 924 runs at half or more all of the time because the temp sensor for the fan is bad. I HAVE to run the AC in traffic so the fans come on ot it will overheat LOL. Too bad my Ac is busted too.

Stan944

So maybe I don't have a problem. I'll keep an eye on it though.

mavfan

using a/c in my p-cars seems to rob much more power than using a/c in any of my other cars. whats the deal with that?

eman930

Cus the 944 is a under powerd car to start withso any other drag is noticed. I know what you mean, When I had A/C on my 924S and ran it, sure it would be nice and cold but the power lose sucked, I swear it had to be like 10hp lose, Thats why I no longer have AC ;-) I figure just take the top off and windows down and drive fast

mavfan

yeah, i feel bad for my cars with a/c on, so i take the punishment instead, its just this weekend riding around with my dad, and then my girlfriend as well, yanno they want a/c, so i have to comply and it just makes getting up to speed a pain.

The DareDevil

After spending all that money on my a/c system you better believe it's on at every opportunity!!!!

silverBean

I still need to fix mine. It hasn't worked for a year and a half.

cjeckert

Wow my 924S dosnt feel like it loses any power at all when i use the ac system

Epic2112

Any idea what's wrong with it?

Stan944

Some power loss is normal, but excessive loss can be caused simply by disconnected wires to the auxillary valve (behind the air box).

silverBean

Epic, it is out of r12. It has not been converted and by now i'm sure some lines have dried enogh to crack. SO I will have to pay the hook-up fee then replace lines. r12 is $4.50 an ounce and it needs 40 ounces. Honestly, i don't mind too much. So long as I have the roof off, it's not bad. And it prevents many people from asking for rides.

AndyK

Amen! I'm about to drop $900 on a rebuilt compressor, R134 conversion, and labor--my AC will be running in the winter!