What happens if the blower wheel is dirty?
What happens if the blower wheel is dirty?
If the blower wheel get dirt or grease built up, it can slow down the wheels rotation and reduce the amount of air your blower motor is capable of moving through your home. Any dirt on those blades will cause your blower motor to work harder. This draws more amperage and pushes less air.
Can you clean a blower motor?
Cleaning the Fan and Motor Using a toothbrush or paintbrush, you can clean between the fan blades, motor housing, and squirrel cage. Your vacuum will be good to keep the dust down and suck up the clump of dust that gets left behind.
Why is there no ground on my blower motor?
It seems, too, that the black ground wire on the blower motor (accessible from just below the dash) has NO ground potential. I ghetto jumpered a 16 gauge wire from the back of the metal clip on the ground wire to the dashboard impact bar/brace and the fan turns at variable speeds with the knob!
Why does my blower fan keep getting ground on Black Wire?
The AC system itself has trouble and has a leaky AC compressor (which I also bought a new one to replace!). I broke out the old trusty multimeter and it seems as though the purple wire on the fan motor gets +12v at all times with the fan switch anywhere but OFF.
Is there a red wire on the blower fan?
This is a 1995 Suburban K2500 4×4 6.5 TD. There isn’t a red wire at the fan. On the blower itself there is a purple wire (+12v whenever the blower speed is anywhere other than ‘off’) and black wire which should presumably be ground. I have tested the black wire for continuity to ground and theres almost none at all.
Why does air speed up as it leaves the blower?
Newton and all that. Anyway, the air starts to flow radially. As it flows outward along the blade, it must speed up because of the slope of the blade. The result is that it exits going faster than the velocity of the rotor. Think of a jai alai basket for air.
It seems, too, that the black ground wire on the blower motor (accessible from just below the dash) has NO ground potential. I ghetto jumpered a 16 gauge wire from the back of the metal clip on the ground wire to the dashboard impact bar/brace and the fan turns at variable speeds with the knob!
The AC system itself has trouble and has a leaky AC compressor (which I also bought a new one to replace!). I broke out the old trusty multimeter and it seems as though the purple wire on the fan motor gets +12v at all times with the fan switch anywhere but OFF.
Where does the power go in a blower motor?
For each higher speed, power flows through one less resistor. Some car makers run blower motor power through the fan speed switch first, then through the blower motor resistor and then to the blower motor and ground. Other car makers reverse that and run power to the blower motor first and terminate ground at the blower fan speed switch.
What are the symptoms of a worn out blower motor?
One of the symptoms of a worn out blower motor is that it can intermittently produce a loud screeching noise when running. How to test a blower motor? If the blower motor doesn’t work at all, the blower motor itself must be tested first. Typically it’s done by measuring the voltage at the blower motor connector when it’s turned on.
