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blower motor not working by nightmare318
Started on: 09-05-2011 03:08 PM
Replies: 17 (1403 views)
Last post by: CoFieroGt on 12-26-2013 02:50 PM
nightmare318
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Report this Post09-05-2011 03:08 PM Click Here to See the Profile for nightmare318Click Here to visit nightmare318's HomePageClick Here to Email nightmare318Send a Private Message to nightmare318Edit/Delete MessageReply w/QuoteDirect Link to This Post
relays ane good fuses are good any ideas?
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Bloozberry
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Report this Post09-05-2011 04:16 PM Click Here to See the Profile for BloozberrySend a Private Message to BloozberryEdit/Delete MessageReply w/QuoteDirect Link to This Post
Are you talking about the heating/AC blower motor in the cabin, or the engine blower motor on the V6 cars?
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nightmare318
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Report this Post09-05-2011 04:26 PM Click Here to See the Profile for nightmare318Click Here to visit nightmare318's HomePageClick Here to Email nightmare318Send a Private Message to nightmare318Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Bloozberry:

Are you talking about the heating/AC blower motor in the cabin, or the engine blower motor on the V6 cars?


heat/ac blower
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phonedawgz
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Report this Post09-05-2011 04:28 PM Click Here to See the Profile for phonedawgzClick Here to visit phonedawgz's HomePageClick Here to Email phonedawgzSend a Private Message to phonedawgzEdit/Delete MessageReply w/QuoteDirect Link to This Post
Turn on the fan and see if you have power on the blower motor leads.

No power = trouble before the blower motor

Power = bad blower motor.
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nightmare318
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Report this Post09-05-2011 04:35 PM Click Here to See the Profile for nightmare318Click Here to visit nightmare318's HomePageClick Here to Email nightmare318Send a Private Message to nightmare318Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by phonedawgz:

Turn on the fan and see if you have power on the blower motor leads.

No power = trouble before the blower motor

Power = bad blower motor.


no power..
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Bloozberry
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Report this Post09-05-2011 04:44 PM Click Here to See the Profile for BloozberrySend a Private Message to BloozberryEdit/Delete MessageReply w/QuoteDirect Link to This Post
Do any of the three fan speeds work? I ask because the high speed circuit is different than the med and low speed circuit.
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nightmare318
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Report this Post09-05-2011 05:00 PM Click Here to See the Profile for nightmare318Click Here to visit nightmare318's HomePageClick Here to Email nightmare318Send a Private Message to nightmare318Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Bloozberry:

Do any of the three fan speeds work? I ask because the high speed circuit is different than the med and low speed circuit.

none are working
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phonedawgz
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Report this Post09-05-2011 06:31 PM Click Here to See the Profile for phonedawgzClick Here to visit phonedawgz's HomePageClick Here to Email phonedawgzSend a Private Message to phonedawgzEdit/Delete MessageReply w/QuoteDirect Link to This Post
When you push the different buttons for heat, def, A/C ext do you hear the motor run that moves the output selection doors?
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nightmare318
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Report this Post09-05-2011 06:43 PM Click Here to See the Profile for nightmare318Click Here to visit nightmare318's HomePageClick Here to Email nightmare318Send a Private Message to nightmare318Edit/Delete MessageReply w/QuoteDirect Link to This Post
yes it is

[This message has been edited by nightmare318 (edited 09-05-2011).]

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nightmare318
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Report this Post09-06-2011 03:03 PM Click Here to See the Profile for nightmare318Click Here to visit nightmare318's HomePageClick Here to Email nightmare318Send a Private Message to nightmare318Edit/Delete MessageReply w/QuoteDirect Link to This Post
anyone?
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phonedawgz
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Report this Post09-06-2011 04:16 PM Click Here to See the Profile for phonedawgzClick Here to visit phonedawgz's HomePageClick Here to Email phonedawgzSend a Private Message to phonedawgzEdit/Delete MessageReply w/QuoteDirect Link to This Post
Check the AC power relay - located under the front hood - near the fan. It has wires colored BRN, BRN, BLK, PNK on it. You should be able to swap in a diffferent relay from a different socket of the car. The High Speed Blower Motor relay is right there also - so if you take that one to test it will kill the blower motor - but only on high speed.

The high speed blower motor relay has wires that are RED, ORN, PPL, AND BLK.

So if you swap them to test - assuming they are the same physical size, and then everything works but the blower on high - then the relay is bad for sure.

Having that relay out will only kill the blower motor on high. The AC Power Relay will kill the blower at any speed, plus the A/C compressor functions.

The motors that move the heat doors do not run through the AC Power Relay however.

[This message has been edited by phonedawgz (edited 09-06-2011).]

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Madscanner
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Report this Post06-20-2012 09:26 AM Click Here to See the Profile for MadscannerSend a Private Message to MadscannerEdit/Delete MessageReply w/QuoteDirect Link to This Post
Hi

Just following up on this, does this mean that these two relays are different - mine both have the same part number 10040837...

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'88 Formula
'85 SE 2M6
'93 Eunos Roadster
'00 Fiesta Zetec S (for those days when I need more than 2 seats)

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LAMBO
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Report this Post06-20-2012 12:03 PM Click Here to See the Profile for LAMBOClick Here to Email LAMBOSend a Private Message to LAMBOEdit/Delete MessageReply w/QuoteDirect Link to This Post
Is this a case of working one day, and not the next. Or did you try turning the blower on after a lengthy time of non-use?
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CoFieroGt
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Report this Post12-24-2013 10:30 PM Click Here to See the Profile for CoFieroGtSend a Private Message to CoFieroGtEdit/Delete MessageReply w/QuoteDirect Link to This Post
I have the same issue good fuses and relays, tried switching the relays in the spare tire area and nothing. HVAC blower motor does not turn on and there is no power even going to the motor. When switched from vent to floor or defrost i can hear it switching but no air comes out. Bad switch maybe? It has the Firebird HVAC controls. (firebird dash) Worked 6 years ago when parked now nothing. The blower spins freely however i did check that as well. Any ideas?

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Black 1986 Fiero GT, L67, 5 Speed, Firebird dash and door panels.
2006 GMC Sierra 2500HD LBZ Duramax
2006 Infinity G35 4 door (Wife's car)

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CoFieroGt
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Report this Post12-25-2013 05:56 PM Click Here to See the Profile for CoFieroGtSend a Private Message to CoFieroGtEdit/Delete MessageReply w/QuoteDirect Link to This Post
Any ideas? I would have drove her to work today (working on Christmas best gift ever no family fights for me!) but without heat its no fun to drive while shivering lol. Thank you all in advance!

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Black 1986 Fiero GT, L67, 5 Speed, Firebird dash and door panels.
2006 GMC Sierra 2500HD LBZ Duramax
2006 Infinity G35 4 door (Wife's car)

[This message has been edited by CoFieroGt (edited 12-25-2013).]

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cmechmann
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Report this Post12-25-2013 09:53 PM Click Here to See the Profile for cmechmannClick Here to Email cmechmannSend a Private Message to cmechmannEdit/Delete MessageReply w/QuoteDirect Link to This Post
Looking at a Mitchel's diagram for an 85GT w/AC. I've had them be wrong.
However. Shows power into the heater control switch. When heater control is on anything but off, power is fed to blower motor switch and Hi speed relay. This is where it can wrong. Power into the heater control is orange. Power into the blower motor switch is brown. Power to the relay is red, with on request orange from blower motor switch.
If you have no speeds and no power to blower motor. It can be no power to heater controls(fuse), the on/off switch in the heater control or blower motor switch.
Pull the heater controls. The largest wires into the controls and to the blower motor switch should be the blower motor power feed. Check for power in and out of the control switch. With the control switch on any mode, you should see power at least 2 of the wires at the blower motor switch. If no power to the blower motor switch but power into the heater control switch, heater control switch. If power in to blower motor switch and no power on any other wire at the blower motor switch, blower motor switch. Power out will change depending on speed.
If only HI, resistor pack or blower motor switch. All but no Hi, Hi speed relay.
No speeds and power to blower motor, blower motor or not uncommon, burnt ground.
This should apply to most GMs without Climate control, without BCM or without off position at blower motor switch. Some supply power to low speed of blower motor any time key is on.
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CoFieroGt
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Report this Post12-25-2013 10:18 PM Click Here to See the Profile for CoFieroGtSend a Private Message to CoFieroGtEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by cmechmann:

Looking at a Mitchel's diagram for an 85GT w/AC. I've had them be wrong.
However. Shows power into the heater control switch. When heater control is on anything but off, power is fed to blower motor switch and Hi speed relay. This is where it can wrong. Power into the heater control is orange. Power into the blower motor switch is brown. Power to the relay is red, with on request orange from blower motor switch.
If you have no speeds and no power to blower motor. It can be no power to heater controls(fuse), the on/off switch in the heater control or blower motor switch.
Pull the heater controls. The largest wires into the controls and to the blower motor switch should be the blower motor power feed. Check for power in and out of the control switch. With the control switch on any mode, you should see power at least 2 of the wires at the blower motor switch. If no power to the blower motor switch but power into the heater control switch, heater control switch. If power in to blower motor switch and no power on any other wire at the blower motor switch, blower motor switch. Power out will change depending on speed.
If only HI, resistor pack or blower motor switch. All but no Hi, Hi speed relay.
No speeds and power to blower motor, blower motor or not uncommon, burnt ground.
This should apply to most GMs without Climate control, without BCM or without off position at blower motor switch. Some supply power to low speed of blower motor any time key is on.


Thank you I will try and check power to the switch this weekend and see if i am getting anything in or out.

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Black 1986 Fiero GT, L67, 5 Speed, Firebird dash and door panels.
2006 GMC Sierra 2500HD LBZ Duramax
2006 Infinity G35 4 door (Wife's car)

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CoFieroGt
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Report this Post12-26-2013 02:50 PM Click Here to See the Profile for CoFieroGtSend a Private Message to CoFieroGtEdit/Delete MessageReply w/QuoteDirect Link to This Post
Alright figured it out was a wire that came apart apparently my uncle twisted and electrical taped a few wires when switching to firebird controls and this one came apart got it all soldered and heat shrinked now should be good to go thanks for all your help.

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Black 1986 Fiero GT, L67, 5 Speed, Firebird dash and door panels.
2006 GMC Sierra 2500HD LBZ Duramax
2006 Infinity G35 4 door (Wife's car)

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