How the Auto Cool controllers operate:
The sensor is measures the OUTFLOW temperature of your radiator
and then sets the fan RPM to regulate the OUTFLOW temperature you have dialed with the black knob. So if you have set the OUTFLOW temperature 10 to 20 degrees F. below your thermostat temperature you will have rock solid engine temperature. Use a laser temperature gun at the OUTFLOW to
check your regulation. Check it parked and motor at an idle.
Also keep in mind, that three things are going to effect the fan RPM.
First is your speed, second is motor loading, and outside air temperature.
Starting your engine for the first time you will NOT see the fans start.
I do not want to hear the BS term "KICKING ON." When the radiator has reached about 140 F, +/-, the fan or fans will start to turn slowly. The fan(s) will increase RPM and reach the point of regulation that you have set with the black knob. For A/C fan speed control, there is a small pot on the side of the controller that sets this fan speed. The radiator control will over ride this fan speed.
Brushless fans: If you have this type of fan, it will fibrate at low RPM unless your purchase our 7Khz HF-125 controller.
Our controllers have Soft Start that limits inrush current from starting a dc fan motor from a dead stop. This is what brand X controller boys fail to realize and why their controllers keep burning out. Auto Cool also has a cool down timer, so when you turn off the ignition, the fans will operate for under a minute.
YOU CAN REACH US VIA THE PHONE OR
EMAIL JUST ABOUT 7 DAYS A WEEK.
DARRYL THE AUTO COOL GUY
562-367-3225
If you return a controller or a sensor for test or repair, please put your full information in the package with name, address, email and phone number!
It will prevent long delays getting it back to you!
The On Line Store Page 1 below. . . .
ATTENTION:
YOU WILL NEED THE HF-125 FAN CONTROLLER @ 7,000 HZ IF YOU HAVE A BRUSHLESS FAN MOTOR.
If your run a brushless fan on a low frequency controller, the fan will vibrate out of control at low RPM.
I made this video of the DX-150 - how it works on the bench.
DIESEL RADIATOR TEMPERATURE CONTROL
Hi good morning Darryl The Auto Cool Guy, from the Philippines Islands. Here is my HF-125 up and running smoothly on my 2000 LN166 Toyota Hilux 1kz-te diesel engine with rear mounted radiator beats that heat in the PI!
Best regards, nelbin binag
The On Line Store Page 1 below. . . .
Sensor Warning: If your radiator OUTFLOW port is plastic, do not use the Standard Brass sensor. It will not get true heat transferred to the sensor! This will result in very low or no fan RPM.
US ARMY ORDINANCE:
CALLED UP FOR A TOUR IN SOUTH EAST ASIA AND ASSIGNED TO THE 295TH ORD. FROM HASTINGS & GRAND ISLAND, NEBRASKA
10-68 TO 10-69.
The photo on the left is the Auto Cool Guy. Location was north of Quan Tri City just south of the DMZ. When we were out of our base camp we always carried our M16s and at least 8 clips of .223 ammo with 20 rounds in each clip.
The photo on the right was taken one night outside of our hooch in Da Nang. For some reason I loaded 35mm high speed slide film in my camera and had it mounted on a tripod ready to go that night. As we were drinking beer and such, all hell brook loose and the sirens went off. Then we heard one of our NCOs telling us to get into our bunker. We answered back to this NCO that we were busy drinking and taking war photos. With my camera and standard lens I shot this time laps photo of a Cobra gun shop spraying 7.62mm rounds on the Da Nang perimeter. In the morning all the MPs found was a dead water buffalo. So you see all the fun you can have in the Army!
We have been building pulse width modulated radiator temperature controllers right here in the USA starting in 2011. We design and build quality and what the customers want!
The Auto Cool Guy supplies the Standard Brass Sensor with your controller. However, if you purchase a Brass Plug Sensor or one of the Copper Inline Sensors, we do not supply the Standard Brass Sensor as the default sensor with your order.
Attention Australian buyers: The cost to ship controllers to your country has gone way up! Fed-X will be the system used from now on. We will get a shipping cost and email you the added expense. There may also be a delay in Pay Pal payments to us. What a bloody mess!
Do you plan to drive in hot desert heat?
The Auto Cool Guy is introducing the new A/C pressure controller. It can be programmed to turn on you Auto Cool's controller A/C fan mode or the Fail Safe mode. It has 10 leds that show the percent of pressure depending on the range of your pressure sensor. The control knob can be set to trip at a level you want. The DC input is BATT, IGN, and GND. The OUT will switch to ground in the F/S mode or to +12 volts in the A/C mode. We will ship a 10 inch pressure hose and 200 PSI sensor with your order. Watch our YouTube video to fully understand how it works. One year warranty!
Greg installed the Auto Cool HF-125 in his classic 1966 Mustang.
"Installation was easy and it works like a charm…
Here is the short version of the video showing before and after." Thanks much from The Auto Cool Guy!
I completed the install of the HF-125. Started the car and all seems to
be working fine in the shop. I haven't taken the car out for a drive
yet. Attached are a few photos showing the install and some
modifications I made. I fabricated covers for the top and bottom and ran
the wiring through the side. Once I test drive the car I will let you
know what improvement it makes. It already seems to be cooling better. I
ran it quite a while in the shop and it never went over about 178
degrees. I'll call after the test drive.
Auto Cool 200
Our most powerful PWM controller, rated at 200 amps. It has the soft
start, fail safe and the cool down
timer. Base 8 x 5.5 inches
Auto Cool DX-150
Our new push button 150 amp PWM radiator temperature controller with 10 led to show percent of PWM. It has soft start, cool down timer and fail safe. Base size 6 x 7 inches.
Auto Cool 55
Our 55 amp PWM controller with soft start, fail safe and the cool down timer.
Designed or 6 and 4 cylinder vehicles not large V8 engines,
Please watch this video before you purchase that brand X controller from that "racing company." It
will save you a lot of hassle, time and money.
The Ice Box
This small device will keep your A/C fan speed constant with your A/C valve control voltage going up and down. It will give you a constant +12 volt output to your controller's A/C input. A blue LED shows DC output. Designed for most European and BMW type cars.
Case size: 3 X 3 X 1.75 inches.
Mike in Brewster, MA is putting our Auto Cool III in this super Mopar to control radiator temperature. He has become a repeat customer.
Watch this video on our Auto Cool III controller. We have sold hundreds and hundreds of these around the world. We have them in Blue and Black, let us know the color you want.
HF-125 INSTALLED
"The unit is perfect. Finally got it all buttoned up and it is keeping things nice and cool. Figured I’d send over a pic of the install - took a bit of fab work to get all the new electrical stuff nicely positioned for service. Thanks again for the great product and the excellent customer service!" BASE: 5 X 6 INCHES
Aaron Stone 4-6-2020
The fan specs are, Derale 18217, 17” High Output pusher or puller without changing anything. I only seem to hear the BUZZ when it is shutting down or when it is going slow. Before I got the AC 85 I had wired low speed with one relay to key and hi speed with another relay and a T stat so it didn’t draw much on the relays but it ran from the time I started tell I shut it down. Yours is much more precise and reliable. I will try to do a video this weekend.
Thanks again
From the desk of
Chris Mueller
