Question about 1991 Ford Aerostar Extended

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95 Aerostar no blower

All fuses check good no power to fan switch or resistor pack all fuse links test good ??where does the fan switch get its power from? I thought it was the fuse block!

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  • Ford Master
  • 3,103 Answers

Nope.. ignition switch... most operable systems go thru the switch/relays when turned on..

Posted on Dec 29, 2013

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Posted on Jan 02, 2017

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SOURCE: heater fan not working

my car is Isuzu rodeo, this morning found the blower of heater not turning no heater work.

Posted on Dec 13, 2008

  • 2920 Answers

SOURCE: 2000 f150 blower motor

the blower motor itself....see if its gone bad

Posted on Feb 12, 2009

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SOURCE: No fire to coil pack. Blows the # 19 fuse. I've

HAVE THE FORD DEALERSHIP CHECK THE PCM POWER DIODE AND PCM POWER RELAY.

Posted on Oct 11, 2009

  • 7 Answers

SOURCE: Heater Blower Motor not working.

I don`t know what year your car is but my 91 Escort had 4 little connections under the glove box where the passengers feet would be right in front of the blower moter (i.e. some one sitting in the passenger seat could hit these 4 relay type things if they kicked their leg) and my had been dammaged and that stopped my blower motor from working until I straightened them out and reconnected them all.

Posted on Mar 10, 2010

roniecon
  • 6826 Answers

SOURCE: On a 2003 Ford Econoline 3/4 ton E250, replaced

The blower is bad,or the blower switch,normaly,the blower resister only controls lower speeds,so check the switch,and the blower.

Posted on Mar 12, 2010

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1 Answer

Chevy astro


2 fuses to check, Kevin: in the instrument panel fuse block, 20 amp fuse #12, Htr-A/C. In the under hood fuse block, Frt HVAC fuse, 30 amp.

The new resistor you put in, was it called a "Blower Motor Resistor and Relay Pack" ? It appears there is a relay there with the resistor, but appears to only be used with htr on high speed. However the low speed wiring is also routed through this relay. If it was the Pack you put in, guess that is not an issue.
In the Heater and A/C Control Module is the blower switch. The power in to the control module is a brown wire (from the #12 fuse in instr. panel). With key on should be hot. It appears the brown wire goes to the mode switch and then to the blower switch. Check for power in, and check continuity of both switches. Or check if blower switch has power to it, then check for continuity in it-it should have continuity in all speeds.
If all is good so far, you need to check if blower motor ground is good.
Here can be found a wiring diagram for your Astro. Look for heater controls under the system called "HVAC". Every wiring diagram and TSB for the Astro (or any make, model) can be found here:
http://www.bbbind.com/free_tsb.html
Good luck.

Jan 04, 2014 | Cars & Trucks

2 Answers

Blower fan not working


The resistor bank is bad for slow speeds, the switch is bad for high speed. In your test, you have voltage, but the switch wont carry the amps, to run high speed. Open circuits will not blow fuses. Replace both switch and resistor bank for all speeds. Make sure to clean leaves and trash from fan housing and see if fan spins freely.

May 17, 2017 | Cars & Trucks

1 Answer

The heater fan blower motor isn't working and fuses are good but someone had taken off a add on security sys.t also have no power at the fan speed switch


First check the blower motor relay swop one in the fuse box with the same number on it or listen for a click when you turn the switch on if you here a click then its good.So if the relay is good then check the connection on the blower motor resistor by performing the wiggle test or replace the blower motor resistor.These resistors are known for over heating causing this problem.

Nov 01, 2011 | 1991 Honda Accord

2 Answers

Cabin fan does not operate at all. Fuses are good,


Might be the Resistor pack located close to the blower. It has a flat connector with 4 or 5 wires, and two small screws holding in the duct. It may be a crispy critter. It happens... The blower moves air across it to keep it cool. The blower motor may be bad as well, or possibly the fan speed switch. May very well be the fuse for the blower as well. Let me know what you find.

Aug 25, 2011 | Chevrolet S 10 Cars & Trucks

1 Answer

The fan will not kick on...on my 2006 Trailblazer. Fuses look good along with the relays. The compressor seems to be working fine. Can't get air to flow through the vents.


The list of things that could be bad; blower motor, blower motor resistor pack (control module), resistor pack wire harness, fan selector switch and fuses. You say the fuses and relays look good, what does that mean? And which fuses did you check? Fuse for blower is in the underhood fuse panel and is #35.The relay is inside the control module, so you can not see it.

Aug 20, 2011 | 2006 Chevrolet Trailblazer

1 Answer

95 jeep Cherokee heater wont work but rear window defrost still works need help please


Check the blower motor fro good connection, power and ground. Hot wire it to the battery and see if it runs. Check the blower fuse, relay, switch and resistor pack.
blower and rear defrost circuits are totally unrelated.

Jun 07, 2010 | 1995 Jeep Cherokee

1 Answer

Heater fan on 2002 Yukon does not operate in front, only rear.


The front blower motor is controlled by the blower resistor module.This is usually the problem with the front blower not working.I looked up the schecmatics and I don`t see separate fuses for the front and rear.But the fuse for the front blower is in the under hood fuse block.If this is good then The problem is probably the resistor module.It is next to the blower motor.The connector from the resistor connects to the blower motor.If you want to confirm this you can check for power and ground at the blower motor connector when you activating the blower switch on.This can be done with a test light.Make sure you have power going into the resistor module also.If you have power going in and no power at the blower motor then replace the resistor.Hope this helps.Good luck.

Dec 28, 2009 | 2002 GMC Sierra C/K1500

1 Answer

Blower motor doesn't work and has no power to it


Check the blower multispeed control resistor pack is not faulty.
The resistor pack is usually located in the air ducting, in the blower fan airflow.
Basically, +12v power is supplied (via fuse) to the fan speed control switch, which then passes via the selected speed control resistor, to the fan motor. Often a interface relay is used to switch the blower motor high current.

Aug 31, 2009 | Dodge Pickup Cars & Trucks

1 Answer

Where is the front fan resistor unit?


Look under the van,on the drivers side near the radiator,it should be in that area.Follow the wires from the fans,they should go right to the module.This is for the cooling fans for the radiator.For the resister module for the blower motor look near the blower motor in the blower box.It is near the blower fan.It can be under hood,but it will be mounted with two screws.Remove the two screws,but you need to remove the wire plug in first.Pull it out .It goes inside of the blower box.If you replace this module,replace the blower motor also,because the blower motor is what causes the resistor to burn out.Did you check voltage at fuse with key on?If you did not check the fuse with key on,you got a false reading.If you checked the fuse with key on,look for a bad ignition switch,or a fusible link burned into coming off a pos. terminal post where the battery cable goes to under the battery.If the blower will not work at all even on high blower,the resister most likely not the resistor.The blower motor relay is most likely the problem.

Aug 29, 2009 | 2005 Dodge Caravan

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