Over the last 2 years I was frustrated with my PZJ70 overheating with the a/c turned on.
I tried a variety of things, spent a lot of time and money but ultimately the solution was very simple: thoroughly cleaning the condenser, sealing gaps between the fan shroud and radiator and refilling a/c gas.
In my defense, I had cleaned the condenser with a pressure washer in the past. However, this time I removed the front grille, straighted out all the bent cooling fins on the condenser, and used the highest pressure setting on the washer. I was amazed at the grime that came from the condenser.
There was also a gap of 1/2 inch between the top of the radiator and the fan shroud I've sealed that with tape.
I've removed and refilled the a/c gas. The result is that the compressor now cuts on and off at the desired thermostat setting. In the past, due to slightly less gas in the a/c system, the compressor never cut off and this I'm sure this exacerbated the problem.
The ambient temperature in my part of the world is around 25-35c. The temp gauge stays in the lower 1/4the part of the gauge even in stop and go traffic and traffic jams with the a/c on full blast.
In all this I'm curious to know if the a/c system in a Landcruiser is designed not to overheat the engine, even if run continuously, in an extremely hot environment with the compressor not cutting off.
I tried a variety of things, spent a lot of time and money but ultimately the solution was very simple: thoroughly cleaning the condenser, sealing gaps between the fan shroud and radiator and refilling a/c gas.
In my defense, I had cleaned the condenser with a pressure washer in the past. However, this time I removed the front grille, straighted out all the bent cooling fins on the condenser, and used the highest pressure setting on the washer. I was amazed at the grime that came from the condenser.
There was also a gap of 1/2 inch between the top of the radiator and the fan shroud I've sealed that with tape.
I've removed and refilled the a/c gas. The result is that the compressor now cuts on and off at the desired thermostat setting. In the past, due to slightly less gas in the a/c system, the compressor never cut off and this I'm sure this exacerbated the problem.
The ambient temperature in my part of the world is around 25-35c. The temp gauge stays in the lower 1/4the part of the gauge even in stop and go traffic and traffic jams with the a/c on full blast.
In all this I'm curious to know if the a/c system in a Landcruiser is designed not to overheat the engine, even if run continuously, in an extremely hot environment with the compressor not cutting off.
