How the Auto Cool controllers operate:
The sensor is measuring 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 for test or repair, please put your full information in the package with name, address, email and phone number! It really helps us getting it back to you fast!
The On Line Store Page 1 below. . . .
Hey Auto Cool Guy,
Returning customer here. I bought one of your boxes for a project car a few years back but I have a new project I need your help with. I have a Jaguar V12 and I recently replaced the radiator with a Wizard cooling unit with two 13" high performance fans. Each fan is rated about 20 amps.
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.
ATTENTION PLEASE:
BE SURE YOU HAVE FULL, COMPLETE, AND CORRECT SHIPPING ADDRESS ON PAY PAL WHEN YOU PLACE YOUR ORDER! IF YOU MAKE A MISTAKE YOUR CONTROLLER WILL BE RETURNED. IF NO ADDRESS PROVIDED, WE WILL HAVE TO EMAIL YOU FOR IT. THIS CAN CAUSE DELAYS IN YOUR CONTROLLER SHIPPING.
I made this video of the DX-150 - how it works on the bench.
DIESEL RADIATOR TEMPERATURE CONTROL
Steve installed the DX-150 in his vehicle and made this video during the process.
US ARMY ORDINANCE
295TH FROM HASTINGS & GRAND ISLAND, NEBASKA 10-68 TO 10-69
We have been building the Auto Cool Controllers right here in the USA starting in 2011. We build what the customers wants.
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.
READ THIS BEFORE YOU PLACE AN ORDER!
Due to lost shipment outside the USA, we highly recommend that
your package be shipped via UPS with a tracking number. Please
email for an extra cost involved. We are having problems with the
USPS and over seas mail system and frankly getting fed up with the
covid excuse and short of employees. We do not want to have your package get LOST or STOLLEN in the mail.
Thanks for understanding, The Auto Cool Guy
Full line of sensors for the Auto Cool Controllers
Copper Inline
Sensors:
If you have a PLASTIC radiator outflow port, you need use the inline copper sensor. If you use the standard brass sensor on the plastic port, it will not absorb the correct amount of heat. This will lead to a lower fan RPM that will let the radiator run hotter than normal.
The copper inline sensor can be ordered in 1.25 - 1.50 - 1.75 and 2 inch OD. Measure your hose ID for the best copper inline sensor fit. Be sure to email the diameter required.
One year warranty
on all sensors!
CALL: 562-367-3225
Standard Brass Sensor:
With each controller sold, we supply a standard brass sensor as standard.
However, if you order a Brass Plug or Copper
Inline Sensor, we do not include a Standard
Brass Sensor.
The Standard Brass sensor is mounted on the OUTFLOW port under the rubber hose. The sensor detects the outflow temperature and sets the fan RPM to keep the outflow port at a constant temperature.
If you have a radiator with plastic tanks and ports, you may want to order one of the copper inline sensor or the 3/8 inch brass plug sensor.
This sensor has a five foot twisted pair of 20 gauge wire that is connected to your Auto Cool Controller. If you add wire to the sensor line, be sure to solder the splice to avoid open failures down the road.
If you order one of the Brass Plug Sensors, please email us the size you need. 1/8 - 1/4 or 3/8 inch.
A short YouTube video on the Brass Plug sensors from the Auto Cool Guy. 1/8 - 1/4 - 3/8 NPT
Be sure to use TEFLON tape on this type of sensor
for proper seal and no leaks!
We can make you a special sensor to order. This one has an extra port for a drain.
Customer wanted to measure radiator inflow and outflow temperature with 1/2 inch ports on his radiator
The Standard Brass Sensor will form fit all out flow ports sizes! No need to tell us you want X size Standard Brass Sensor!!!!!!
We now have three Brass Plug Sensors.
1/8 inch - 1/4 inch and 3/8 inch
Be sure you tell the Auto Cool Guy the
size of the sensor you need for your
radiator. You can send an email or even a
phone call. All three have the same price.
Mount the Brass Plug Sensor close to the
outflow port if you can - on the bottom of the
radiator.
We supply extra twisted pair wire to extend
to your Auto Cool Controller.
BAD IDEA - LEADS TO
LEAKS IN RADIATOR
The guys at Brand X controller company has you stick probes into your radiator core. This can lead to leaks from vibration over time and miles.
Bad idea overall!!
THE STANDARD BRASS SENSOR
Please do not attempt to use any sensor other than the sensors manufactured by
The Auto Cool Guy
they WILL NOT WORK.
.