HELLO everyone

im just wondering if anyone could help me here my heater fan only works on number 4 to solve this problem i had changed the blower motor resistor twice.

1st time i changed the resistor the heater was working fine for 2 weeks.

2nd time i changed it the heater was working for 3 months.

during these times the heater fan kept on making a squeeling noise when the heater speed was 1 to 3.

when i brought the 2nd blower resistor i was advised by the dealers that i would have to change the whole fan and the resisitor.

it looks like an easy fix but i just want to make sure that im not wasting money for the wrong parts.

i hope its nothing to do with the power because im not good at wiring.

PLEASE HELP!!!!!!

I dont understand the squealing noise; if it were the fan bearings it should squeal on "4" as well.

My original thought was to check the alternator regulator output, make sure it is not pumping out too many volts; but that would not cause the noise.

My 2nd thought was an intermittent short in the speed switch, but again, why the squeal??

I suggest you take the unit out and have a good look at it. There is a small chance that something has enters the fan unit and is stuck in there, at lower speeds it is rubbing against something inside and that the blown fuses are being caused by it getting pulled further in and jamming the blower.

That is the best I can suggest.

Anyone had more experience with this type of heater unit??

HELLO everyone

im just wondering if anyone could help me here my heater fan only works on number 4 to solve this problem i had changed the blower motor resistor twice.

1st time i changed the resistor the heater was working fine for 2 weeks.

2nd time i changed it the heater was working for 3 months.

during these times the heater fan kept on making a squeeling noise when the heater speed was 1 to 3.

when i brought the 2nd blower resistor i was advised by the dealers that i would have to change the whole fan and the resisitor.

it looks like an easy fix but i just want to make sure that im not wasting money for the wrong parts.

i hope its nothing to do with the power because im not good at wiring.

PLEASE HELP!!!!!!

My guess would be that the blower motor itself is sticking and drawing too much current - not enough to blow the fuse, but enough to see off the resister over time.

If you turn the motor by hand, does it spin smoothly?