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2

A simple solution You can achieve similar results by opening all doors for about ~1 minute before entering your car. All hot air inside the car will be replaced with probably still warm air from the outside. If there's no wind, you can turn on the ventilation addtionally. One minute of ventilation usually won't hurt the car battery too much. Plus, it get's ...


3

Apart from the limited amount of power obtainable from a panel being less than that required to operate anything more than a fan, there are perhaps two other reasons Current solar panels are flat and rigid. Fitting one into the roof of a car may spoil its styling, or its aerodynamics, or both. By adding a panel you are increasing the weight of the car, ...


3

The Lancia Thesis, introduced back in 2001, had this system. Basically the glass in the sunroof was actually a solar panel which was used to power the A/C fan when the car was parked in direct sunlight. The more intense the sunshine, the more power for the fans, the cooler the cabin would become. This system was one of a number of things on the Lancia ...


8

You have a great idea! And it IS being done. Certain models of the Toyota Prius feature an optional solar roof that powers interior fans that automatically engage when the interior gets too warm. The hybrid batteries are not even used at all: the fans run strictly on solar power! Cool (literally). Image Source: resilience.org


3

The problem you have is efficiency. Solar panel efficiency runs about 10-20%, depending on the type used. Air conditioners range in efficiency, about 30% efficiency is a good working figure. What this means is that it takes 3.3 times the energy to cool your car for every unit of heat you remove. Solar panel efficiency means you need about 6.6 times the ...


11

If you would like to do that by the use of solar panels, the problem is power. A typical car AC probably uses somewhere between 1000 and 3000 watts. A square meter of typical photovoltaic cells generates roughly 150W of power. Even if you covered the entire car with solar panels, they wouldn't be sufficient to power the AC completely under perfect ...


4

The Engine Control Module has multiple outputs to control at least 3 different relays that control the two fans on the radiator/condenser area. Each fan has 4 wires, and a HI and LO speed. The exact control strategy I could not discover, but the ECU uses a variety of input signals and internal variables to determine how much "fan" should be turned on for ...


4

The squirrel cage has broken fin(s), or the motor bearing has gone (most likely on a '99), or the case has distorted -- all of which allow the unit to vibrate or slightly rub on a part of the case. If you remove the glovebox and plastic the kick panel underneath it, you can press various places on the housing and case to see if the noise changes... if it ...


5

I checked ALLDATA. The A/C switch grounds the AC SELECT input at the Powertarain Control Module (PCM). The high (normally closed) and low (normally open) pressure switches in series (may be the same housing) ground the AC REQUEST input at the PCM. With those two inputs, the PCM sinks the AC RELAY output. This should engage the AC compressor clutch. I ...



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