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Heater fan not working?

Tiny
CVN65
  • MEMBER
  • 6 POSTS
  • 1996 DODGE DAKOTA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 98,000 MILES
I turn the heater/AC switch to the on position and nothing happens (car running), the blower does not come on. I checked the fuse and is ok. Any suggestions? Thanks
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Tuesday, December 1st, 2020 AT 12:17 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
See below heater circuit-


https://www.2carpros.com/forum/automotive_pictures/12900_blower1_5.jpg




https://www.2carpros.com/forum/automotive_pictures/12900_blower2_6.jpg

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-1
Tuesday, December 1st, 2020 AT 12:17 PM (Merged)
Tiny
DHALLE
  • MEMBER
  • 3 POSTS
  • 1995 DODGE DAKOTA
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
The blower motor run awhile than stops for a little bit and starts again. It does this randomly. Any ideas?
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Tuesday, December 1st, 2020 AT 12:18 PM (Merged)
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Hello, you need to do some testing when the problem occurs. I'd check the fuse circuit, when the motor refuses to run. That circuit goes hot when you turn on the key. Might be something wrong with the motor itself, I've seen bad motor brushes cause an intermittent problem. The blower motor on-off/speeds are controlled on the ground circuit. Is it only one speed where the problem occurs, or it doesn't matter?
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Tuesday, December 1st, 2020 AT 12:18 PM (Merged)
Tiny
DHALLE
  • MEMBER
  • 3 POSTS
Thanks for the reply. It does it at any speed setting.
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Tuesday, December 1st, 2020 AT 12:18 PM (Merged)
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Sounds like the blower motor, to me. You can double check, Take the connector loose from the blower motor, run jumper wires from the battery for B+ and ground to the blower connector, use an inline fuse, just in case. If the blower motor still runs intermittently, faulty motor.
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Tuesday, December 1st, 2020 AT 12:18 PM (Merged)
Tiny
KLU
  • MEMBER
  • 3 POSTS
  • 1995 DODGE DAKOTA
My AC and Heat won't come on all the time it seems like the blower. Where is it and how hard is it to get the blower out? I recharged the AC in the Fall and it worked fine, however the fan seemed to go off and on.
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Tuesday, December 1st, 2020 AT 12:18 PM (Merged)
Tiny
VANDRAGON
  • MECHANIC
  • 298 POSTS
It could just be a relay going bad. It's either under the hood by the battery or under the dash. Just call a parts house and ask.
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Tuesday, December 1st, 2020 AT 12:18 PM (Merged)
Tiny
KLU
  • MEMBER
  • 3 POSTS
I found out it was the plug under the hood and the ends all needed to be replaced. Thanks
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Tuesday, December 1st, 2020 AT 12:18 PM (Merged)
Tiny
M.BRETTRAGER
  • MEMBER
  • 1 POST
  • 1994 DODGE DAKOTA
  • 6 CYL
  • 2WD
  • MANUAL
  • 200,000 MILES
The Heater in my 94 dodge dakota is not working, it isnt even blowing air, whats wrong with it?
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Tuesday, December 1st, 2020 AT 12:18 PM (Merged)
Tiny
CARADIODOC
  • MECHANIC
  • 33,871 POSTS
Pretty hard to tell over a computer but I bet the fan isn't running. If it will run on just the highest speed, suspect a defective resistor assembly in the heater box. If it doesn't run on any speed, the fan motor is the most likely suspect but the switch could be bad too. The place to start is by measuring the voltages on the two wires to the fan motor.

Caradiodoc
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Tuesday, December 1st, 2020 AT 12:18 PM (Merged)
Tiny
SGERICKS
  • MEMBER
  • 2 POSTS
  • 1993 DODGE DAKOTA
  • V8
  • 4WD
  • AUTOMATIC
  • 187,000 MILES
I put a new resister, new blower, and checked all fuses. I turn the toggle switch on and no power to the blower. Worked fine one day but I did notice it really only was blowing on the higher settings the last couple of days then the next day no power at all to the blower. I don't know what else to check?
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Tuesday, December 1st, 2020 AT 12:18 PM (Merged)
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

I would start by inspecting the serpentine belt for deterioration and the also the belt tensioner, it sounds like a belt slipping from you description.

Mark (mhpautos)
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Tuesday, December 1st, 2020 AT 12:18 PM (Merged)
Tiny
WEEBEGINNINGS
  • MEMBER
  • 1 POST
  • DODGE DAKOTA
93 dodge dakota 4x4, 100,000 miles. The fan for the ac just quit working.I'm wondering if it's an easy fix and I might be able to do it myself?
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Tuesday, December 1st, 2020 AT 12:18 PM (Merged)
Tiny
ARCHANGE1
  • MEMBER
  • 3 POSTS
Several things to look at first.

1. Presure in the cooling system - Low presure will stop the unit from powering up.

2. Heater work? Heat/cool use the same fan

3. Reostat

4. Contacts in the switch behind the AC switch. There paper thin pc board
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Tuesday, December 1st, 2020 AT 12:18 PM (Merged)

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