A/C BLOWER MOTOR rus slow intermitently at all settings

blower motor or resister bad

If your car is moving when it does this, check that the wires are on tight to the blower motor.

Seems like a fuel supply problem... additional fuel is added through the injectors when the engine is cold (running slightly rich) and then when it comes up to temperature or pre-set time period through the Electronic Control Unit (brain), the engine dies. Each time you shut off the car and restart it, the injectors receive extra fuel. My guess is partially clogged fuel injectors. Take the car to a Bosch Service Center and have them cleaned... its far cheaper than buying new. Change the fuel filter too! Hopefully, the fuel injection system pump is not bad (not the same as the fuel pump) as these are expensive. Get a rebuilt one, if you need a new one. Recommend Denso Iridium spark plugs to get a cleaner burn, better gas mileage, and longer service life.

No, the battery will not run down due to this problem. When you shut off your truck and pull out the key, the power to the motor will be cut off and should stop blowing. Depending how your vehicle is set up, the blower will stop as soon as you shut off the ignition key, or when the door is opened like it does on my 2005 Chevy Uplander van. If your battery is running low, you either have a worn out battery or some extra accessory is loading it down.

The resistor pack which limits the current to your blower motor when your switch is set on the lower settings is most likely bad. These are usually located close to the blower motor. On my 2002 S10, it is located in the engine compartment on the passenger side, attched to the blower motor air duct. the dealer or local auto parts store will have this part. Unfortunatly, I have not changed one on your specific vehicle, so can't give you more detail than I already have.

Hope this helps.

The 'whirring' sound from the blower motor could be a dry bearing or damaged armature (part of blower motor that the brushes ride on), or just wore brushes. The smell could be the motor winding wires burning due to blower motor bogging down and overheating. You can replace blower motor with new or salvaged one.

It keeps burning out blower resistors because of the blower motor drawing to much amperage so you will need to replace the resistor and blower motor

Go to an A/C repair shop and tell them that your "clutches" aren't acting right...then explain the fan issue...cheap $40-60

This Realy Sounds Like A Bad or Loose Ground Although it Could Be the Power Plug too Check for Loose Plug At the Blower motor And Also try to Catch When its Off but Switch is on And SMACK it With a Screwdriver this will tell its the GROUND Wiggling the Power lead W/Blower On & it comes on Says Its the Hot or POWER Lead to motor. Beyond that Its gona be the RELAY But AS I Said I think its Power or GROUND LOOSE Hope this helps !!

next time motor does not work when you start vehicle,open hood and tap on blower motor housing. if it now runs,you need a new blower motor,brushes in motor are shot.

This could also be a loose/poor connection from the control unit. I have had a similar issue. I know it is not thermal overload because sometimes the blower just doesn't come on when you start the car. A slap to the top of the dash board over the temperatures controls has got it going again.