Blower won't turn off!

[ktamlyn]

My blower will not turn off when the car is off. The resister and the motor were just replaced with after market parts by me. Any thoughts as to possibly why? The blower had this problem before the motor and resister were replaced.

Thanks!

Kevin
2004 Silver Vibe

[SeattleJeremy]

Did it start doing it after the parts where replaced?
When you take the key out of the ignition does it turn off?

[ktamlyn]

The problem was present before the parts were replaced. Now that the parts are replaced the motor never turns off. This is with the keys out of the ignition.

Before the parts were replaced the fan would not turn off about 1/10 times the car was started, and especially if the car had a real chance to warm up. The blower motor would not run on setting 1 or 2 most of the time. Replacing the resistor and motor appears to have been required, but now that the blower motor is fresh and strong it runs fine on the lower settings.

The whole time that I was dealing with the blower not turning off before and still, I unplug the resistor to prevent the car battery from dying. Before replacing the parts, eventually the fan no longer turned on at all, and it was clear that the resistor had finally completely given out.

Its clear that 2-3 problems existed

1) The blower motor was old and weak so lower settings were harder for it to operate at (I am not 100% certain of this one)
2) The resistor died because at first as #1 the fan wouldn't run at lower speeds, then didn't run at all
3) While on the "off setting" the fan still will operate

#3 is still a problem.

[kumquat]

I'd guess the switch is faulty. What speed is it on while "off"?

[ktamlyn]

There are 5 settings: really low, low, medium, medium high, high. I can't really tell if while on the off setting if the fan is blowing lower than while on low. Do you think its the relay switch? If so, where is that located?

[ktamlyn]

Do I need to replace the whole control found here:
http://www.ebay.com/itm/03-04-Pontiac-V ... 6e&vxp=mtr" onclick="window.open(this.href);return false;

or is the part required something else? Like this:
http://www.ebay.com/itm/SANTECH-IND-MT0 ... 04&vxp=mtr" onclick="window.open(this.href);return false;

[kumquat]

Well considering how cheap the relay is, I'd probably swap that out first. I don't think that'll be the issue though; the switch is supposed to completely disconnect the blower motor circuit directly. One side of the motor is attached to the relay, but the other side is attached to the switch through the resistor.

It might make sense to take the switch module out and clean it out with some contact cleaner like Deoxit or CRC QD.

[ehoff121]

This is a concern:

My blower will not turn off when the car is off.

The blower should not be powered when the ignition is off.

Sounds like there may be a short somewhere, perhaps in the harness?

May want to bring this in for a tech to diagnose and repair.

[triz]

This is a concern:

My blower will not turn off when the car is off.

The blower should not be powered when the ignition is off.

Sounds like there may be a short somewhere, perhaps in the harness?

May want to bring this in for a tech to diagnose and repair.

Incorrect. The blower can and will blow with the key out of the ignition.

To the OP crazy as it sounds is it possible your blower motor resistor went bad? In these days of Made in China parts it is not uncommon to have to replace the part weeks or even day after you install it. Try starting the car and then pulling the JCase fuse or swapping the relay first. The relay may not do a dman thing if you pull it. Shut the car off and then reinstall the Jcase fuse.

[JohnO]

If the problem is a relay there will be other things that work that shouldn't as well. For example, if the IG1 relay is stuck the windshield wipers will work when the ignition is off as well.