Heater blower motor slow to start

2003 Century. Front blower motor is slow to start.

Thought the old one was on the way out, so purchased a new one. Seems like it struggles to get going too once I turn it on. Checked positive and negative connections at plug. Getting 12.7 volts to them. Checked signal wire. 0 volts at OFF, 5.5 volts at FULL ON.

Why does it have problem getting going ? Any insight greatly appreciated.

 

The way I tested the fan switch (the speed selector switch), is by the signal wire. 0 volts at OFF, 5.5 volts at #4 (full ON). Other than that, I did not test it.

 

Good question. I'll check it out tomorrow and report back. From what I recall, it started it almost every speed, but I'll double check.

The other strange thing, is when it's plugged in, it's harder to spin, almost like a little resistance. It won't spin if I push the wheel. If I unplug it, it spins for quite a while before stopping.

 

Seems like it starts in every speed, but , as I stated before, there's a slight hesitation before it starts to spin. When it does start, it seems it's slow to get going.

One other thing I noticed, is when the blower motor is connected, it won't turn freely, like there's resistance of some sort. When unplugged, the wheel can spin for several seconds.

 

The motor speed changes according to the # on the control panel