Compressor runs for 5 sec then stops

compressor is getting hot. you can try and replace run capacitor.

Look for:

1. the ac needs air flow thru the indoor and outdoor radiators
2. the outdoor radiator coil should get warm/hot and produce warm air.
3. indoor radiator coil needs should get cold and produce cold air.

The ac needs the fan motor(s) working and compressor running and pumping. Compressor skinny copper line hot and thick line cold.

I would start by getting a can of carburetor cleaner and have it 'at the ready' and try the 'start, run stall, start run stall' operation again. Only THIS time, once the engine begins to stall, give it a couple of quick shots of the cleaner into the air filter to see if it stays running on the cleaner.

If it does, then it's still a fuel problem. If it doesn't, then it probably an ignition problem. I would be sort of leaning towards the ignition coil getting weak. The reason I'm saying that is your statement about it running (I'm assuming cold start) for at first, 10 minutes then it stalls. Start it again and it runs for a couple of minutes and stalls again.

This could possibly be from the coil getting warm/hot and not producing the needed spark. After a 10 minute run it simply gets too hot and stalls the engine. After the next restart, the coil is already warm from the engine and so it don't take as long for the coil to get hot and stall the engine again.

Hope this makes sense and helps you out.

You would need to find out if the compressor continues to run when the cold air stops.

Someone will need to find out if the compressor clutch is failing, or if it is loosing power due to a pressure switch or other problem.
A faulty relay or switch could get hot and switch off power to the compressor.

This is called short cycling. It sounds like the compressor is getting hot and opening a bi-metal overload, which shuts the compressor off. The compressor cools, because it is not running and the bi-metal contacts close allowing the compressor to start again. This will repeat itself and is usually due to low refrigerant, which usually means there is a leak in the normally sealed refrigerant lines. The refrigerant cools the compressor windings and if it is low it cannot do that, hence the shutting off of teh compressor, cooling down process and restarting of your compressor. Short cycling will ultimately ruin the compressor.

If this has helped you please give me a rating worthy of my diagnosis.

Probably a blockage in the lines-is the high side reading really high?

Carburetor high speed adjustment ( screw nearest the filter ) open ( counterclockwise ) 1/2 turn.
Adjust again as needed to run when hot.
make sure the gas mixture ratio is as required.
Henry

you can check its starting components. it could be a bad capacitor or a bad start relay. if the compressor starts from cold, it could start right away but as it heats up, it should be able to start also, since after running for a few hours, the compressor will really get hot, it would stop at defrost cycle and re start again after about 30 mins. since it is still hot, if it has a defective starting components, it can not start and that is the time it would overheat.

in any case that the starting components are all ok, then you have a partially burnt compressor. it would run while cold and can not run when hot because the resistance of the wires changes as it gets hot. with this kind of problem, you need to replace the compressor. as you have said, the fan at the condenser is running. if the fan at the condenser is not running, that is also a cause for the compressor to overheats. i hope i was able to help...

YOU ARE BE GETTING A WEEK COMPRESSOR.