OK. The electric fan is hooked up with a relay. Relayed through the coil to have it come on only when the engine is running, but getting power from the main battery-in line to the starter solenoid. The fan runs WAY too fast, and too loud. I think it should run half as fast. Is there a way to slow down the amps so it will run about half-speed. When I say loud, the fan is 1.5 times louder than an already loud motor.
Aren't you running your fan backwords from the way it was supposed to be? That may be why it's so loud.
It may, or may not be backwards, to how it was originally mounted. I am not sure what it is off of (a Taurus, I think?) It is loud now due to how FAST it is running. I could make a recording and upload it to the forum. Would that help anyone? Maybe it is not loud, but would normally be running only on the highway, and since I have it hooked up without a temp sensor, and it runs all the time, I am just not used to the noise?
It shouldn't be too loud, unless it's running to high of an RPM (to much power), or it's got a bad bearing in it. Do a search (on Google), and try to see how much voltage an electric fan on a Taurus should get. On a side note, I used to build little powered cars out of those metal Tonka trucks (around 1:12-1:16 scale). The bed of them were a perfect fit for 2 AA Batteries. I would go out in my dads shop and get a small electric motor, put a hand carved wooden propeller on the motor, and build a mount that would suspend the motor over the bed of the truck, with the propeller acting as a "pusher". I would wire everything up, point it in the direction I wanted it to go, and flip the switch. Man it flew! THEN, I felt "The need for more speed" and I realized that a 9 Volt would fit in there well also..... if it didn't stay on it's wheels, it ate my prop up.... BAD, but when it did stay on it's wheels, it was out of sight. I was 7 when I was doing this..... doesn't seem like almost 20 years ago. Oh well, same theory anyway.
If you want it to turn slower, you have to give it less voltage. It will draw as much current as the motor demands, if it is available. I'm sure that fan was designed to pull, so if you have it pushing, it is turning backwards, and could be why it is noisier.
This fan works GREAT! but it sounds like I am running 12 volts through something that is made for 1.5 volts. It seems like it is running too high rpms. It literally overpowers the motor, when you stand next to the car...and my motor is pretty damned loud!
I saw your website, and saw that you've got it on the outside of your radiator. I'm fairly certain that fan should be on the engine side of your radiator. Most electric fans from the factory are. I guess I attempted to say what Matt said, through my story. Less voltage = less rpms.
i looked on alldata and the fan runs on 12volts, if everything else is right then you would have to put a resistor in the line to drop the voltage but i think this might effect the fan motors efficency and run hotter than normal
believe it or not some fans are loud, some imports are very loud and you can hear them when the engine is off and they are cooling down the engine, as far as taurus fans they should be mounted inside of the engine bay, you are probably hearing the fan noise that you would not normally hear because of the hood closed,engine running etc...good luck.
I have the Ramcharger fans on mine. They have a LOW and a HIGH. The HIGH is definetly loud ('loud' being a relative term). I would think an inline 12V rheostat (potentiometer) switch work for you.
The fan is mounted behind the grille rather than radiator, so you will hear it louder. The Tortiose also had a lot more insulation around the fan than your car. Add to that the shroud on the front of the car is probably adding sound. Lowering the voltage on a motor that is not designed for it could damage it. It will also draw more amperage that way. I know I am not offering much help, but I just wanted to throw out some possibilities. Dave
Just reverse polarity and see if its any quieter. Is so, then its because its running backwards. To put a resister in line will cut the voltage down but make sure you get the proper wattage resister or it will burn up quick.
We have an 04 Mercury Sable which is the same as the Taurus and our fan is louder than most,it's mounted behide the radiator, those fans put out somewhere around 3000 CFM so they are very efficient and work well with a modified V-8.
