Blower motor, cuts out after it runs for a while.

Probably 2 separate problems, try this turn on the ignition switch turn the blower on high then tap on the blower motor with a hammer if it runs replace the motor, if not check for current at the blower motor plug, if yes replace the motor if no locate the blower motor resistor check for voltage using a test light, if the light lights replace the resistor, if no lite go to the blower switch if no lite there??? Think again about the fuses you checked. I hope this helps, take care.

Buick LeSabre Heater - RepairPal

repairpal.com > Problems > Buick > LeSabre

Buick LeSabre Heater blows only cool air...even w/ defroster on. This is a ... Heater fandoesn't come on . ... The blower works but there is no heat coming out.

Blower Motor Problems ' Auto Repair Help - YouTube

? 4:22
https://www.youtube.com/watch?v=2vmfxYg8LoY
Sep 27, 2009 - Uploaded by mgittelman
The blower motor is a common heater/AC repair within the skill level of ... However if the power wire is a single light purple wire and the ... for blower motor and fuel and relay good but no powercoming on both any ideas? ... my o5 seira, when i start the engine with the air switch on it blows my blower fan ...

Car Air Not Blowing, Heat & Air "How to" Test Testing ...

? 6:22
https://www.youtube.com/watch?v=hgar6Q1lV6A
Apr 5, 2013 - Uploaded by Fixbook
Here I show how to determine the problem if your air, or blowermotor is not ... Click here to check out the the "Car Runs on 2 cylinders" series: ... How to Fix Over-Heating engine & No Heat in car - Buick (2000 yr) Park Ave . ... Car fan / AC only works on high - Replacing the Blower Resistor - Duration: 4:24.

Buick Park Avenue Questions - NO HEAT!!! - CarGurus

If you got the motor to run, then whatever feeds that motor electricity is the culprit. Check the switch.

well it migh be the fuse, blower resistor or the blower motor. was the blower blower noisy when it last ran ? sometimes you can TAP on the motor and it will spark it back to life BUT the motor may take out the blower speed control aka resistor or module. so hear is how i would start my check.. with a 12 volt test light probe. check all of your fuses, then go to the blower motor and check for power threw all speeds but first make sure the motor has a ground signal.
if the motor is bad they are not bad expensive around 40 bucks same goes for the speed control, but a bad motor can wipe out a speed control, and they are a non returnable part.. see how to find control and motor. ho How To Install Replace AC Heater Fan Speed Resistor Chevy Cobalt 05 10... hope this helps, and get it fixed as it's a safety issue, it helps keep the windshield clean and fog free !
jay the pool pump repair guy longwood florida

The blower motor will be on the passenger side up under the dash,held in place with(usually) three machine screws .The resistor block will be close to this location, a series of 5 or 6 wires in a row with a screw at each end. The block itself is about the size of a credit card a you will be able to hold the block up to the light and give it a visual inspection.If you have a meter or can borrow one check each run with the continuity option.I must say that this is a good place to start but I would also be looking for a poor connection as I am working away. wiggle the wiring harness and see if you can get the fan to cut in and out.Good luck and watch your back,its tight under there.

Hello,

Sounds like you have a short in the system. It sounds like the heater motor might have a short in it.. to check this you will have to take the heater motor out and test it with a battery and some wires.. if it turns the next place to look is the heater resistor. These are located under the hood on the passenger side of the vehicle. You will have to cut an access hole in the plastic cover to access the resistor. These are a pain to get to, and they are pretty common for going bad...

Good Luck,
Joe

Yeah if you have to tap on it, then that means the brushes in the motor are worn out and you need to replace it. The blower motor is behind the PCM and Coolant Overflow bottle. If you remove these then it will give you better access to motor. You'll have to cut around housing. There should be a groove already there for you, just make sure you don't cut all the way around it. Once you open it and get the new one installed, you'll have to use caulk to seal where you cut it at.

Look around on the blower motor box, for some wires going to a connector that is held inside the blower box with a couple of screws. It's the blower motor resistor.

you need to follow your wires from the blower motor and either rewire it or run a new wire to the blower or heater

My 2000 century heater blower died,dont replace the fan motor until you check with a simple test light to see if the heater fan resistor is bad first,it's only 20 bucks to replace.Its located next to the fan housing up against the firewall.The wires from the fan switch go down to the resistor, check to see if switch has power then check for power down at the resistor,I'll bet its the resistor.There are three, I think five sixteenth screws to remove the resistor one is crammed up very tight on the firewall,you'll need a quarter inch drive extension with a wobbly socket to get that one against the firewall.