Question about 1994 Chevrolet Astro

1 Answer

Blower motor only works on high

Replaced the blower motor for noise. resitor pack was replaced because it only worked on high speed and it still only works on high speed.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 2,692 Answers

If the resistors have been replaced correctly then either the speed switch or the wiring to and from the switch is open. I would bet on the switch.

Posted on Dec 29, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

1997 chevy silverado blower only works on high and then stops working after a few minutes. High is also very weak.


This is likely a common problem associated with the blower motor resistor pack.

When one of the resitors go bad it will only work on a higher setting, until all of the resitors go bad.

The part is not expensive, typically around $30-$40. In most cases it can be replace by you.

Sometimes it can also cause the fan speed switch on your dashboar to go bad, but this is not typical.

Check out this video from showing how to replace the resitor pack: 1A Auto Demonstrates how to change...

Dec 01, 2013 | Cars & Trucks

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

A/c blower works, but only on high.


ITS THE SPEED RESISTENS THAT HAS BURNED,THE FAN HAS ONLY ONE SPEED , AND THE RESISTENS LOWER THE SPEED IN STEPS , GET A NEW ONE AND IT SHOULD WORK

Sep 26, 2010 | 2004 Pontiac Vibe

3 Answers

The fan switch only works on level 5 out of 5... is this the selector switch?


You probably have a faulty blower motor resistor, this electronic part controls blower motor fan speed. This part is located near the blower motor, unhook the electrical connection and you will see 2 screws holding the part in place. This part looks like some type of circuit board, Good luck, Gary

Jul 27, 2010 | 2003 Chevrolet Impala

1 Answer

Front blower only works on high, what part do i


There are two things I can think of that may be causing your problem. First the blower switch in the dash may be bad if you do not have an electronically controlled blower, if you do it could be the control unit itself, but usually they stop working alltogether. The other part which may be bad is the resistor pack on your blower motor.

If your blower has four speeds on it like most blowers these days then this resistor pack will have four resitors mounted on it. They look like coiled wires. These resistors vary the voltage coming from the blower switch so you have different blower speeds. Kinda acts like a filter dropping the voltage for the lowest blower speeds incrementally.

If you want to diagnose this yourself it shouldn't be too hard. You will need a 12 volt test light or a multimeter to test for voltage. The blower motor should be located unther the hood of your vehicle on the passenger side against the firewall. It looks like a round black box with wires going to it. Where the wires connect to it the resistor pack is on the other end of the connector inside the motor housing. There are usually two screws or bolts holding it into the housing. If you take these bolts out it should come right out. You can visually inspect it and you may notice some charring on the circuit board where the resistors are.

I would measure power with you test light from the connector before it goes into the resistor pack. If you are receiving power at all blower settings then your blower switch is likely good since this feeds the signal to the blower motor.

You can then use a multimeter to ohm out the resitors on the resistor pack. If any of them show to be open you have a bad resitor coil there. You have two options at this point, you can unsolder the old resitors that are bad and try and replace them with comparable resitors from radio shack. Or you can go to rockauto.com and order a new resitor pack. They run about $16.00-$20.00.

Apr 08, 2010 | 2001 Dodge Grand Caravan

1 Answer

2006 mercury montego blower motor control does not work conected wire to blower motor and pluged into lighter blower worked on high tried another module but still didnt work checked all fuses they are...


replace the blower motor resistor. follow the wires from the blower motor to the resistor. the resistor controls the speeds on the blower. this is a very common problem in the winter time do to condensation coroting the circuit board on the resitor

Jan 15, 2010 | Mercury Montego Cars & Trucks

2 Answers

2007 dodge 3500 mega cab diesel, blower motor was working intermittently and then only on high today I have no fan at all


check the reostat which is a resistor that controls the fan speed and also check the wiring to both the reostat and the heater motor

Dec 07, 2009 | 2007 Dodge Ram 3500 Quad Cab Laramie

2 Answers

I have a 1996 Acura Integra. The blower moter will


Check all your fuses.( you probably did, but do it again, one at a time) it seems like your control pannel is not getting power. See what wire is the power for the control pannel and bypass it with a jumper wire, giving it power and see if the blower works. Be careful though, make sure you find the correct wire that powers the control, or else you'll burn the control.

Nov 30, 2009 | 1996 Acura Integra GS-R

2 Answers

Blower motor only works on high speed only.what do i need to look for to fix this problem


your chrysler will need what is called a blower motor resistor this is located on blower motor air box under glove compartment next to your blower motor it will have a plug of wires coming out of it double check your wire at the plug if sighns of wires overheating replace the wiring and plug.

Sep 19, 2009 | 2001 Chrysler Sebring

2 Answers

Blower works on all speeds but minimal air comes out


youve got a bad blower motor resister. buy a haynes manual and the resistor and have a windy day again.

Jun 05, 2009 | 2004 Dodge Ram 2500

Not finding what you are looking for?
1994 Chevrolet Astro Logo

125 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

61037 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...