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Blower motor takes a while to turn on

Sometimes the blower motor will take a while to turn on. I have to put it at high speed and about 10 minutues later it will turn on. this happens with either heat or AC. I'm thinking it is the blower motor control processor.

Thanks

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  • Anonymous Nov 16, 2008

    blower motor takes a while to turn on

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6 Suggested Answers

  • 1118 Answers

SOURCE: my 1998 astro van blower motor only works on high speed.

No the motor is not bad or going bad, the heater blower motor resister is bad, thats regulates the blower speeds, its located under dash by heater motor 2 screws hold in heater box with a electrical plug to it.

Posted on Feb 17, 2009

csmock132
  • 4669 Answers

SOURCE: Heater/AC blower will not operate

Replace the blower resistor.

Posted on Mar 03, 2009

  • 1 Answer

SOURCE: HEATER BLOWER MOTOR ONLY WORKS ON HIGH SPEED

THERE'S A SENSOR UNDER THE PASSENGER SIDE OF THE CAR UNDER THE GLOVE COMPARTMENT YOU HAVE TO LOOK WAY UNDER JUST LAY DOWN ON TOP OF THE MATT IN FRONT OF THE PASS SEAT IT HAS 2 SCREWS ON IT UNPLUG IT THEN UNSCREW IT TAKE IT TO THE DEALER IT COST ME ABOUT 30 TO 50 DOLLARS BUT THAT WAS THE PROBLEM I HAD. GOOD LUCK

Posted on Apr 01, 2009

  • 1 Answer

SOURCE: ac fan won't turn off

In my 2001 Town and Country without automatic temperature control, my heater/AC blower suddenly worked only when set on high. Usually, that problem is your blower resistor pack.

I had to search for the one in my van since the parts man wasn’t sure where it was except that he thought it was in the dash somewhere. (In some other vans it was under the hood.) My Haynes manual didn’t have anything on it except a picture showing it with the blower. I found it directly behind the glove compartment. Very easy to get to once you know where it is.

The glove box can be lowered all the way out of the way just by pulling in the sides so the rubber stoppers come out toward you. The sides bend easily to allow that.

The glove box being out reveals the resistor in the heating duct right in front of you. Just remove the two sets of wires and two bolts (10mm socket, I think) and the resistor pack slides right out. Then bolt in the new one an plug the wires back in (they only fit in one way). Fold the glove box back up and press the stops in to get them back in place and you are done.

The resistor pack only cost $12 and change at my dealer. It is part number 1-04885583AB which was a replacement for the same number with AA at the end, so I’m guessing they had a lot of trouble with the AAs and so made a better AB.

Last Winter my heater blower fan worked only on High. I changed the front heater/AC blower resistor pack and was surprised at how easy it is, but I had to figure it out for myself since my Dealer's parts guy was no help as to where the part lived and my Haynes manual was just plain wrong. This was on a 2001 T+C. I'd be very surprised if the 2001 Caravan was any different. Don't know what other year vans would be the same. I do know some earlier generations had this resistor under the hood and Haynes had is with the blower sort of behind the instrument cluster.

Posted on Sep 16, 2009

  • 7353 Answers

SOURCE: Blower motor on 96 Isuzu Rodeo does not blow on

if fuses are good, check for power at blower motor, when truck is running and a/c on. the resistor and the switch provide ground, so the blue/white wire should have power, and the blue/black wire should have NO power, if it does have power, then most likely the resistor is bad. if it has no power and the motor doesnt run, the motor is bad.

Posted on Oct 20, 2009

Testimonial: "I will give that a try.. and post the results.."

ministock48
  • 258 Answers

SOURCE: 1996 GMC blower motor only works on high speed.

more than likely yes the resistor

Posted on Oct 22, 2009

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Can anyone tell me where the fuse and/or relay is located for the blower motor on a 2005 Buick LaCrosse


First off , does it work on any speed ? After looking at a wiring diagram I find out your vehicle has a Blower motor control processor , a module ! That is your problem ,more then likely !
DEFINITION: The blower motor is inoperative in all speed positions.

1

Did you perform the Diagnostic System Check - Vehicle?
--
Go to Step 2
Go to Diagnostic System Check - Vehicle

2

  1. Turn ON the ignition, with the engine OFF.
  2. Place the blower switch in each speed position.
Does the blower motor operate in any of the speed positions?
--
Go to Blower Motor Malfunction
Go to Step 3

3

  1. Turn OFF the ignition.
  2. Disconnect the blower motor connector.
  3. Turn ON the ignition, with the engine OFF.
  4. Connect a test lamp between the blower motor supply voltage circuit and the blower motor control circuit.
  5. Place the blower motor switch in the minimum speed position.
Does the test lamp illuminate?
--
Go to Step 9
Go to Step 4

4

Test the battery positive voltage circuit of the blower motor control processor for the following:
?€¢
An open


?€¢
A high resistance


?€¢
A short to ground

Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
--
Go to Step 15
Go to Step 5

5

Test the ground circuit of the blower motor control processor for an open or a high resistance. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
--
Go to Step 15
Go to Step 6

6

Important: Ensure that the blower motor control processor connector and the HVAC control module connectors are connected during this step in order to avoid misdiagnosis.

  1. Measure the voltage from the blower motor speed control circuit at the HVAC control module to a good ground.
  2. With the ignition ON, turn the blower motor to high then to OFF.
Does the voltage measure near the specified values?
5 V OFF
1 V ON
Go to Step 10
Go to Step 7

7

  1. Turn OFF the ignition.
  2. Disconnect the HVAC control module.
  3. Turn ON the ignition, with the engine OFF.
  4. Measure the voltage from the blower motor speed control circuit of the HVAC control module to a good ground.
Does the voltage measure near the specified value?
5 V
Go to Step 11
Go to Step 8

8

Test the blower motor speed control circuit of the HVAC control module for the following:
?€¢
An open


?€¢
A short to ground


?€¢
A short to voltage

Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
Go to Step 15
Go to Step 10
If your not familiar with trouble shooting automotive electrical circuits I suggest you take it to a ASE certified repair shop !

Jan 07, 2016 | Buick Cars & Trucks

1 Answer

My heater fan doesn't work at all.


The blower motor resistor is bad ! The blower motor operates at different speeds an when you turn the speed switch It directs current through a different resistor making the blower motor go slower of faster . What Does Blower Motor Resistor Do eHow

Mar 18, 2015 | Cars & Trucks

3 Answers

The heater fan blower in my 85 chevy blazer s10 4wd does not go on switch to low, medium, or high anymore when the dial is turned. Sometimes about five miuntes later it will swicth to the highest setting...


There is a blower motor resistor under the dash in the middle or closer to passenger side. It should be attached to the ducking with two bolts or screws. There will be a connector to unplug with probably about 4 wires. That resistor goes bad and will cause the symptoms your describing. Remove the connector, Remove the bolts or screws, and replace in opposite order. Very simple to replace but locating and actual replacement will sometimes be difficult. Talk to your local auto store and most should be able to point you in the right direction. The part should be around $20. Let me know how it works out for you. Thanks.

Jan 14, 2011 | 1985 Chevrolet S-10 Blazer

1 Answer

I have a 97 s-10 truck...heater blower doesn't come on....20 amp fuse okay, is there another fuse to this ? Is the Blower motor hard to get to ? Thanks, Jim


THE HEATER RESISTOR UNDER THE DASH MAY BE BAD. TRY THIS- TURN THE BLOWER SPEED TO HIGH W/ THE KEY ON AND HIT THE HEATER MOTOR WITH A HAMMER----LOCATED UNDER THE WINDSHIELD AND BESIDE THE RF FENDER------ IF IT TAKES OFF YOU NEED A MOTOR...

Nov 25, 2010 | 1997 Chevrolet S-10 Pickup

1 Answer

I think i have a loose wire on fan blower switch. sometimes it blows sometimes it doesnt/


sounds like you need either a blower motor or a blower resitor
does it work sometimes on all speeds or just only on high
only works on high= resistor
only works sometimes = blower motor

Nov 04, 2010 | 1998 Saturn SC

2 Answers

My fan has the 2 highest gears of the blower working but the 2 lower gears are out. i have replaced the switch and the fan motor and i have checked the fuses and nothing is working. any ideas on what it is


Its the relay for the motor. When the relays go the high speeds will operate but the low speeds will not. Should not be too expensive and is easy to replace, only hard part is that sometimes they put them in places that are hard to acess.

Jan 09, 2010 | 1991 Toyota Pickup

2 Answers

The AC button light blinks on and off. AC won't


When the light is blinking that means there is a code in the system you will have to take it to a shop and have the codes read. Sometimes "Jiffy Lube" or "Rapid Oil Change" can read the code for but they won't fix it. If the blower motor only runs on high, the blower motor resistor is bad. When you put the fan switch on high it puts full voltage to the fan motor (blower motor) when the fan switch is in any other position, the voltage is reduced by the resistor causing the motor to run at slower speeds. The two problems are probably a result of the resistor.

Dec 14, 2009 | 2003 Chevrolet Malibu

1 Answer

AC only work on high speed


If the blower motor only works on the high speed it most likely needs to the blower motor resistors replaced. Sometimes when replacing the resistors the dealer recommends that the blower motor be replaced in conjunction. It's believed the blower motor burns out the resistors. The resistor pack is either in the engine bay mounted on the heater box or under the passenger side of the dash board.

Oct 04, 2009 | 2001 Chrysler Town & Country

2 Answers

Why does blower fan speed switch lock-out off and low speed positions on 1998 chevy silverado? It stopped working altogether then I replaced a 10 amp fuse and now only medium high and high will work but,...


Sounds like you may have a bad blower motor resistor.  When they go bad, they usually wipe out all speeds except high.  But could knock out just one or two of the speeds.  It should be located near the blower motor.

Sep 10, 2009 | 1998 Chevrolet K1500

1 Answer

The blower in my 1999 ford taurus stopped working. It does not work at any speed. How do I replace this part myself?


The blower motor isnt hard to replace. A couple of quick questions though, did you check the fuses and relays? Secondly, sometimes the motor can develop a bad ground, did you check that? The blower motor is located under the hood, on the passenger side, on the firewall. It's kind of round looking, and has an electrical connector plugged into it. Turn on the key, put the fan speed selector on high, and jiggle the wiring connector on the blower motor. If nothing, unplug it, and look at the prongs inside the connector. If they look corroded or rusty, try to clean them up with a small wire brush. Otherwise, to remove the motor, simply remove the small bolts that hold the motor in place, there may be 5 of them. Take it out, and replace it with the new one.

Jun 09, 2009 | 1999 Ford Taurus

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