Postby ramishrrr » November 7th, 2016, 4:45 am
Your AC Problem.
The operation of previous compressors were like this:
The belt turned the pulley on the compressor which spun idly by.
When the system wanted the compressor to do its work, an electrical current was sent to an electromagnet (coil) behind the pulley. There is a plate in front of the pulley which is connected to the internal shaft of the compressor. The electromagnet would cause the plate to clasp the pulley. The plate would turn, and of course the compressor shaft would turn.
Your compressor is now doing its job. You AC begins to cool.
When it is cold enough according to your setting, the thermostat in the blower box inside will send a signal to cut the current going to the electromagnet.
The electromagnet will de-energise, and the plate would be released. The shaft will stop turning and the pulley would spin idly again.
The cycle would be repeated as it gets warmer in the blower box, and your set cooling temperature has to be achieved.
In the new Toyota compressor there is no electromagnetic clutch. The pulley is connected directly to the shaft, and the shaft is turning all the time.
There is a port connecting the compressor's suction to the discharge. There is a solenoid controlled valve that keeps the port open or closed.
When the port is open, (the solenoid valve is open) the suction is linked to the discharge, so the compressor spins idly by doing no work.
When the port is closed (the solenoid valve is shut) the suction is isolated from the discharge, and the compressor loads up and starts doing its work. Your AC starts to cool.
Now, if that valve does not close for one reason or another, your AC will not cool. If there is an electrical fault in the solenoid or the wiring going to it...............no go !!
If the valve itself is damaged, worn or leaking.............no go !!
Because of modern day car design, that valve, and where it is located may not be repairable, so the logical thing to do is to renew the entire compressor. Then Toyota Trinidad Limited will soak you a few thousands.
Personally, I think the older design was better, but it is cheaper to manufacture the newer compressor, saving Toyota money, and boosting spare parts sale.
Maybe you should buy the Chinese compressor. I know for sure that 90% of the domestic ACs are made in China. Too, I have a BMW bike. The starter ground itself to death and a new one was US$400. I bought a Chinese starter on Amazon.com for US$60. It is working perfectly, tumbling the engine faster than the original.
Peace. RR.