Turning on ac slows down all belts

I don't understand this sentence at all: "When adding freon it blew cold but soon after I noticed my battery light came on as all the belts were slowly down and will even stop before attempting to pushing and spin again. "

Can you break that into a couple of sentences and be clear about what is happening? It sounds like your AC works, then the battery light comes on, the belts wore down or broke and the belts stopped. That can't be right.

pilgrim said:

I don't understand this sentence at all: "When adding freon it blew cold but soon after I noticed my battery light came on as all the belts were slowly down and will even stop before attempting to pushing and spin again. "

Can you break that into a couple of sentences and be clear about what is happening? It sounds like your AC works, then the battery light comes on, the belts wore down or broke and the belts stopped. That can't be right.

Click to expand...

Sorry yes it's very weird. When I click auto the compressor begins to spin with the belts. Then the air blown through the vents gets noticably colder. Soon after like 12 seconds in the compressor begins to drag the belts, ultimately stopping the radiator fan, ps steering belt and alternator. It slows down and intermittently spins an inch every 1-2 seconds. The alternator belt dragging/stopping causes the battery light.

I've reduced the amount of freon from the low pressure port and then compressor no longer dragged and spun constantly. No more battery light BUT now the air is not cold, compressor spins and condenser fan activated.
This is a 1994 NA z32.
So yeah maybe I overcharged? I inserted a full 12 oz can while the service sticker says 6.8oz..

WolfZz32 said:

Sorry yes it's very weird. When I click auto the compressor begins to spin with the belts. Then the air blown through the vents gets noticably colder. Soon after like 12 seconds in the compressor begins to drag the belts, ultimately stopping the radiator fan, ps steering belt and alternator. It slows down and intermittently spins an inch every 1-2 seconds. The alternator belt dragging/stopping causes the battery light.

I've reduced the amount of freon from the low pressure port and then compressor no longer dragged and spun constantly. No more battery light BUT now the air is not cold, compressor spins and condenser fan activated.
This is a 1994 NA z32.
So yeah maybe I overcharged? I inserted a full 12 oz can while the service sticker says 6.8oz..

Click to expand...

Maybe it meant 6.8oz of oil? Not sure atm

If you have R134 in it, my advice is to take it to a good AC shop and have them evacuate and refill the system. This is beyond my knowledge.

It sounds like the compressor is locking up (or nearly doing so) and as a result the belt must be squealing as the engine turns and the belt won't move.

Is there A/C compressor oil on the belts?
Are they tight enough?
What kind of noise when you rev it up?

pilgrim said:

If you have R134 in it, my advice is to take it to a good AC shop and have them evacuate and refill the system. This is beyond my knowledge.

It sounds like the compressor is locking up (or nearly doing so) and as a result the belt must be squealing as the engine turns and the belt won't move.

Click to expand...

Taking it to a shop is realistically the smart decision. I'm hoping to figure it out on my own as I like to learn. I've hooked up a set a gauges and when the compressor ran without hesitation the high side read just under or exactly at 100. Low side was at 20-30psi. But it got these numbers when I added freon, not even a full can of a 12 oz. It kept steady but soon after the low side pressure kept building while the high side dropped. This would stall the compressor.

I'm not sure why it built up like that, and the low pressure line was hot. Behind the glovebox there's a hissing sound that comes up as soon as the compressor kicks on. Turning off the compressor makes it slowly dissipate and quiet down. Maybe it's expansion valve? I'm going to continue one I get my hands on a ac vacc.

To anyone who reads this thank you and feel free to give input