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13 votes

Using sunshine to cool down the car

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 ...
I have no idea what I'm doing's user avatar
9 votes

Using sunshine to cool down the car

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. ...
End Antisemitic Hate's user avatar
6 votes
Accepted

Mazda 2 engine fan starts after turning engine off

Great question. It sounds like the problem is linked to the coolant level, and not the AC. I'm not familiar with the plumbing in this particular cooling system, but it is definitely normal for the ...
MooseLucifer's user avatar
  • 6,007
5 votes

The ac clutch kicks on and off in sync with the radiator fan. This is definitely not right. Whats wrong?

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 ...
SteveRacer's user avatar
  • 12.4k
4 votes

Why is it still overheating

There are a few causes of overheating that wouldn't be fixed by your previous repairs. System not pressurising: The radiator cap needs to seal pressure in. If it doesn't, your coolant will boil at a ...
tlhIngan's user avatar
  • 12.2k
4 votes

Using sunshine to cool down the car

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 ...
GdD's user avatar
  • 17.1k
4 votes

Only one radiator fan running

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 ...
SteveRacer's user avatar
  • 12.4k
4 votes
Accepted

99 Corolla blower motor noise - possible cause?

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. ...
SteveRacer's user avatar
  • 12.4k
3 votes

Using sunshine to cool down the car

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 ...
NoAnswer's user avatar
3 votes

Using sunshine to cool down the car

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 ...
Nigel's user avatar
  • 31
3 votes

Using sunshine to cool down the car

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 ...
Steve Matthews's user avatar
3 votes

Why wont my #1 fan run on my on 2003 Pontiac Grand Am?

Most GM cars will not turn the cooling fan on until 230 degrees or higher. One fan should come on when the ac compressor is running regardless of engine temp, Most of the time the fan relay has failed,...
Moab's user avatar
  • 7,990
3 votes
Accepted

"Fan hitting something" noise when switching on "Inside Air" button

This kind of problem can be tough to sort out. Let me offer a few suggestions to get started on tracking down the source: Get a helper to work with you. Have her/him start the car while you try to ...
dlu's user avatar
  • 14.5k
3 votes

Squeeze some extra life out of radiator and condenser fans

I would not try to grease the bearings. Normally a bearing this size is sealed by either a rubber ring (designation suffix 2RS) or a steel sheet ring (designation suffix 2Z), so just slopping some ...
Martin's user avatar
  • 8,468
3 votes

Why is it still overheating

The clue is that the heater core was replaced; it sounds like a classic case of the system being air-locked. You can get the scenario where a bubble of air is trapped below the level of the coolant ...
Steve Matthews's user avatar
3 votes

97 Honda CRV overheating and radiator fan not turning on by itself

A laser sight infrared temp gun would tell you what you need to know. 16 dollars on amazon. When you jump the fan switch and the fans come on, you have reduced the possibilities down to: You ...
Milison's user avatar
  • 634
3 votes

The AC will not get cold unless driving

Fix the fan. At low speeds, the fan pulls air through the radiator (and AC condensor) and cools things off. At higher speeds, airflow takes care of that, and the fan is useless. That probably ...
3Dave's user avatar
  • 3,159
3 votes

Radiator fan not turning on automatically

If you find that the fan works when the wiring to the themro-switch is bridged (i.e. when you physically plug the wiring, the fan turns on) this would suggest that the themo-switch is at fault. This ...
Steve Matthews's user avatar
3 votes
Accepted

When should engine fans turn on to cool transmission?

The engine fans won't turn on to cool the transmission. The transmission fluid is passively cooled in the cooler loop inside the radiator by whatever temp the coolant is at the time. Mind you, this is ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
2 votes
Accepted

Ventilation fan (blower fan) stopped working

The blower motor should have two wires, one is a ground fed by a mechanical or solid state resister/HVAC computer. The other is fused power, this may or may not have a relay. Check for power on one ...
Ben's user avatar
  • 10.7k
2 votes

Squeeze some extra life out of radiator and condenser fans

I don't see that there is much you can do about the squeaking. Unless you can crack open the electric motor housing, there isn't much to disassemble to get at the motor bearing. eBay says this is ...
Zaid's user avatar
  • 39.2k
2 votes

Radiator fan not turning on

It would help to know the make, model, year and engine type of the vehicle. There are essentially two main types of radiator fans; mechanically driven and electrically driven. Depending on the type ...
Steve Matthews's user avatar
2 votes

Why are the blades of car radiator fans unevenly spaced?

The oddity is there to lessen fan noise. The uneven spaces creates air pulses that cancels out some of the noise, without lessening the ability of the fan to move air.
user52605's user avatar
2 votes

2008 Mazda 3 engine cooling fan won't work

The oscilloscope diagram shows a square wave having about 14 volt amplitude (5V/division), 5ms period (1ms/division) which is a frequency of 200Hz, and about 55% duty cycle. What you will measure on ...
user28910's user avatar
  • 255
2 votes

Radiator fan doesnt work!

Just to add to solar mike's answer. You could also hook up a scanner and check the sensor reading or just let it sit there and idle, with the ac off. the fans should come on since there will be no air ...
cano's user avatar
  • 823
2 votes

Why do some air cooled engines use a fan with unevenly spaced blades?

The comments point to noise which is one reason , the other is that it can spread the working range in terms of delivery or efficiency. We now have variable geometry turbos for the same reason...
Solar Mike's user avatar
  • 34.6k
2 votes

temperature gauge too low while the AC is on

Not knowing what kind of vehicle you have, I'd suggest your thermostat is at fault. If you put in a lower temp thermostat than stock or the thermostat is stuck open (even slightly), your radiator is ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
2 votes

New Radiator Fan Issues in my 2010 Ford Focus

The reason the cooling fan comes on when you turn on the A/C is because in front of your radiator there is another part that looks just like a radiator called a condenser. The condenser works the same ...
Hunter's user avatar
  • 21
2 votes

Should the radiator fan operate while the car is moving?

That depends on how good the airflow is through the radiator at the various speeds. Low speed high load is usually when the fans will come on. Fans are controlled by sensors and ecu so that the ...
Solar Mike's user avatar
  • 34.6k
2 votes

Did I break my radiator fan?

Who knows for sure, but usually if the motor is stopped while the power is still on, heat will build up (energy has to go somewhere). This is where you caught the smell from. Since you removed the ...
Pᴀᴜʟsᴛᴇʀ2's user avatar

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