How do you turn on a high speed heater fan?
Now pull the zip tie tight and cut the long end off with side cutters. Now reconnect your battery and turn your ignition switch back on and fan speed switch on high. The fan should be blowing on high, now wiggle the connector one more time the fan should stay on without interruption.
How does a high speed blower motor work?
In the highest fan speed state, the blower resistor is bypassed completely and the fan is effectively connected directly to the car’s battery, allowing maximum current to be supplied to the blower motor.
What’s the best speed for an AC blower?
Because this process is complicated, working with an expert in AC repair and maintenance is a worthwhile venture. What is the Recommended Speed for Your Blower?
Is the a / C fan a 4 speed fan?
When you have selected on the slider control MAX A/C the relay you’re talking about in the engine compartment takes over and the fan will only run on the high speed. When you select NORM A/C on the slider control you will have control over the fan speed. Our fans are actually considered a 4 speed fan.
Now pull the zip tie tight and cut the long end off with side cutters. Now reconnect your battery and turn your ignition switch back on and fan speed switch on high. The fan should be blowing on high, now wiggle the connector one more time the fan should stay on without interruption.
Because this process is complicated, working with an expert in AC repair and maintenance is a worthwhile venture. What is the Recommended Speed for Your Blower?
Is there a high speed blower motor relay?
Yes there is a high speed relay which sounds like it is out. Here is a guide to help test it and the blower motor wiring diagrams so you can see how the system works with the relay location below as well. Check out the diagrams (Below).
Why does my heater not work on high speed?
Heater blower motor will not work on high speed? I have replaced the black bosch relay behind the glovebox, the blower resistor and the blower motor and still cannot get the blower to work on high. I remember in older model years of gmc’s and chevys that their was a high speed blower relay that caused this issue.
