Heater Blower stopped working?

did you check the fuses also check the motor and the wires around it tap on the motor. This guide will help you test the motor here is a guide as well to check the relay with the relay location in the diagrams below.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

and

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

Check out the diagrams (Below). Please let us know what happens.

I did check the fuses, and all are fine where is the blower motor was bad, thank you

Nice work, we are here to help, please use 2CarPros anytime.

I have tried several things to get the heater motor to work. It spins when power is jumped to it, i have change the resistor, and the heater switch and still nothing is there a heater motor relay inside the car behind the glove compartment on the fire wall that could be causing this?

Did you check for voltage at the blower connector, with everything turned on? Did you check hvac fuses?

The purple wire from the blower connector goes to the blower relay, according to my info. I don't have an exact location for the relay, sorry.

the blower stopped working, how easy is it to fix myself, i pretty much know nothing about vehicles.

Hi:
The problem may not be the motor. You first need to check if the motor is getting power. If it is, then it's most likely the motor.

As far as replacing it, it's under the dash on the passanger side (a little bit of a pain to get to).

If you are willing to do the work, I can tell you how to do it, but on a scale of 1 to 10, 10 being the worst, it's about a 6.

Let me know.

Blower motor has stopped working. I have changed the resistor pack and blower still does not work. I switched the relay on drivers side with the middle relay, they have the same numbers on them. Still no blower fan. A friend ran two wires direct to battery blower fan ran. He said blower motel is good. But when plugged back in with connector it will not run. My fan control in the car would only run on a low speed before blower fan stopped. what next?

The most likely suspect is the fan motor has tight bearings, and the thermal fuse in the resistor assembly burned open. The same thing may have happened to the new resistor. The clue when running the motor wired directly to the battery is it would have stopped instantly when power was removed, instead of coasting gradually to a stop.

Most GM vehicles use a high-speed relay that bypasses the resistor assembly on just the highest speed. If the thermal fuse is open, the fan should still run on the highest speed, but if it is tight, it will run too slowly. That will cause it to draw excessive current which could overheat the relay contacts.

my heater blower will not work.

Is there voltage at blower motor?

have not been able to check that. it is an intermitten problem some times it works some times it doesnt. i did check fuses and replaced the switch panel on the inside of the car.

my blower motor quit working i have juice at the hi low switch and tried swappping relays on the front firewall but to no success. the motor was not making any noises previously but when i started the car the blower never came on.I am not sure where the blower motor is exactly but is that the problem

The blower motor is located on the right rear of engine compartment

Check the AC/Heater fuse no. 6 25amp and also test the blower switch

Apply battery power to the purple wire on the connector at the motor-Did it fire up-if not check the ground on it if okay the motor is gone

my fan/blower switch is not working for the heater, ac, etc. and the fuse is good, any ideas ? thankyou

I would think you should check the blower motor switch. If you have a digital multi meter I can walk you through a test to make sure it is bad. The other thing could be the blower motor resistor on that we can do an ohms test to check it.

Heater problem
1993 Chevy Blazer V8 Four Wheel Drive Automatic

My heater blower is not working, and the radiator is leaking anti-freeze from somewhere, but I don't know where from. Also, the radiator seems to be still filled with anti-freeze and doesn't seem to be losing much fluid, even though there is a leak. What are the problems that could cause this problem?

blower motor could be caused by a fuse, a resistor, a switch, or even the motor it self. as for the leak, have the cooling system pressure tested to see where the leak is coming from

The heater fan quit working, at first i could bump it and it would work but not anymore!

either the motor has failed or the blower resistor.

Roy

Check for power to the blower motor. If there is power, chances are the motor is bad.

Recently, my 1993 Chevy S10 Blazer's fan system stopped working (No air being forced out with the heat or AC). It will slooowwwwly defrost the windshield, but with no force. How much would this cost to repair?

Thanks for your help! Just wanted to let you know that we found that the problem was the connecting cable. The crimping function of the clip was worn down, so we adjusted the clip and refastened to motor. Fan now works!

blower fan doesn't work correctly
also, if the drain tube for the evaporator is clogged will it short out the fan resistor and not let the fan run correctly? i have been running the a/c , no fan, just to test to see if it was draining right and i see no water drops below the vehicle. where is the drain tube located exactly? if it is clogged up and shorted the resistor, is the resistor bad now? i was trying to get to it, under the dash, and the a/c and fan started working again but, it will stop again so, i need to fix the problem before i give my wife's vehicle back to her. i was moving the wiring around a little and that's when the blower started working again. i don't think its a loose wire or connection though. i haven't got it out yet but, the resistor seems to be located way up high under the dash behind the glove box. if that is the resistor and i get it out, how do i check to see if it is bad?

Test the blower motor itself first but you may have a bad blower speed module.

Blower motor tested fine when hooked directly to battery. What is the blower speed module and where is it located?

It controls the blower speeds and it's located where the resister would normally be, next to the blower motor.

Your talking about what I refer to as the blower motor control module located just adjacent to the blower and is mounted on the evaporator housing. Is this what you are calling the blower speed module? If so, I've replaced it twice with two used units from salvage yards and it is still doing the same thing. I don't want to spend $230 for a new one and find out that it wasn't the problem.
Thank you for responding to my problem................Don

Also, if the blower speed module/( blower motor control module)was bad, wouldn't it prohibit the blower from working at all? My blower works occasionally and when working it works in all switch positions including automatic. Does my model have a blower control module and a resistor? If so, where is the resistor located?

Then I suggest you take it to an electrical professional and get it diagnosed properly.

Wrenchtech, I did take it to an auto electric shop and they seemed to think it was the blower module but, weren't sure so, that's why I tried the used units first. I'm sorry if I've been any trouble to you and thank you for your assistance in my time of need.
Thank you again.............. Don Higginson

There's only so much guessing that can be done from the Internet without seeing the car.

please help my 4x4 full size chevy blower fan was going on and off and now has stoped working, where do I locate the fuse and or what other things should I be cheaking

The ralay might be bad as well. If you check the fuse and it is good, the relay may need to be replaced. It is located at the center rear of the engine compartment.

The fuse box is located on the leaft side of the dash. The cover should have a diagram on it mapping out the location with a description of the fuses in the panel. It is somethimes hard to orient this diagram, so make sure you have it right by using the spare fuses or large relays as landmarks to orient the diagram in relation the the fuse location.

I am giving you 2 diagrams. They are electrical component location diagrams and show the fuse panel, but I did not see the relay represented. One is for a 2.2L and the othe is for the 3L.
They are labeld at the top when you click on them you will be able to see this.
They both have the fuse panel in the same place, but I figured you might be able to use them for other purposes or just to have them.
If you need anything else, please don't hesitate and I will reply ASAP.

Thank you Dr CranknWrench if it is the relay is it the one in the middle of the 3 little boxes beside the blower fan at the back of the fire wall? is this correct?

Thank you so much!

It should have the following colors of wires going into the wire harness terminal connector and then the a black wire going out to ground;
Orange, Red and Dark Blue and Purple then the Black ground wire.

I can get the blower to run by splicing the purple wire on relay harness from positive on battery buy fan will not run without it. Replaced the resistor and nothing. Any recommendations?

Can you check the HVAC fuse in the under-hood fuse panel for power?

Here is a guide to help and the blower motor wiring diagrams so you can see how the system works:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the images (below). Please let us know what happens.