What would cause my blower motor not to work?
What would cause my blower motor not to work?
In a situation where the motor doesn’t work on any speed, the most likely causes are: a blown power supply fuse, a bad motor ground connection, bad motor speed control module or a failed motor. On all systems, a failed blower motor is least likely. Start by checking the blower fuse and HVAC controller fuse.
Why is my F-250 Super Duty heater not working?
The A/C,Heater blower in my 1999 F-250 Super Duty stopped working , I put in a new relay , and changed all three control switches, ( fan, thermostate, and vent controls) . Double checked fuses, all good. Blower motor will work when we run a jumper wire from battery directly to Blower motor prongs. (To test)
What causes a blower fan to not work?
When this happens, you may notice that you will not feel anything blowing out of the vents at all. This may also cause the blower motor to work intermittently. A blower fan is connected to the negative battery terminal (also called ground) on one end and to the positive battery terminal through a blower motor resistor on the other end.
Is there a blower on my Ford F-250?
(To test) Yes, The resistor on blower motor was the first item changed, coils looked rusty from moister. thought that was the problem, but still no blower, so we changed the control switches , but still nothing .
Why is the resistor not working on my blower?
Hi There, The resistor is what controls the speed of the blower motor, not the relay. The blower motor relay supplies power to this motor when you turn the switch to “on” that can sometimes fail. When this happens, you may notice that you will not feel anything blowing out of the vents at all.
What to do if heater blower won’t run?
If you have a 108, 109, 114 or 115 chassis you will have to remove the center console and dash to get to the motor. If you have a 107, 116, 123 or 126 Chassis access to the motor is quick. For the 201 and 124 chassis it takes a little more work as you have to remove the wiper and intake air vent assembly.
Why does my blower fan only work on one speed?
by Lee Sallings. The most common symptom of a faulty blower motor resistor is a blower fan that only works on one speed, usually high. This can be annoying, but troubleshooting is easy. If you start at the blower motor, and check resistance in the circuit, you will find the problem in no time.
Why is the blower motor not working on my Ford F150?
During a road trip with the air conditioning operating continuously for many hours, the blower motor stopped functioning. The black/white wire to the blower speed controller was warm to the touch and when wiggled, the blower motor restarted. Operation of the blower motor worsened during the remainder of the trip.
How can I tell if my blower speed switch is faulty?
Test for power at all the blower speeds by moving the blower speed switch through all positions. A faulty resistor loses power at different positions on the switch. High blower speed has direct power to the motor from the switch. If there is no power indicated on high blower speed, the problem is most likely the switch or the fuse.
