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Blower motor not working?

Tiny
CONFUZEDCAR
  • MEMBER
  • 2002 DODGE CARAVAN
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
First the blower motor stopped working, then windshield wiper blades wont turn off when in off position (acts like its on a low setting) then right side power window goes down, but not back up. Then speedomoter and odometer stops working (but not the other gauges) and when taking apart the right side door to get window back up. Motor appears to not work even when connecting to power source. BUT. Suddenly after putting the door back together, NOW you can hear the motor. OH yeah, at same time speedometer and odometer stops working, also noticed front heater/fan/defrost doesn't work. But the back fan and heater does.?
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Tuesday, December 1st, 2009 AT 8:15 PM

36 Replies

Tiny
CH112063
  • MECHANIC
  • 1,320 POSTS
This is typical when the TIPM goes out which is common here is how you can replace it which is easy because it self initializes. Check out the diagrams (Below). Please let us know what happens.
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Monday, April 8th, 2019 AT 1:53 PM
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
That's what the problem was in my Caravan :0)
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Monday, April 8th, 2019 AT 1:53 PM
Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
I too vote Body computer. It's amazing how the engineers have made simple, reliable systems into ridiculously complicated nightmares by adding an unnecessary computer to everything. Chrysler had extremely little computer trouble in the 1990s, but they've learned how to make lots of money on replacement computers from GM.

This is why I still drive an '88 Caravan. Power windows, power locks, power mirrors, power seat, rear AC and heat, delayed wipers, ... And no computers!

Caradiodoc
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Monday, April 8th, 2019 AT 1:53 PM
Tiny
SUEBOXER
  • MEMBER
  • 5 POSTS
  • 2002 DODGE CARAVAN
The heater does nothing I replaced the heater control unit and the resistor the resistor was burnt and melted due water
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Tuesday, November 3rd, 2020 AT 9:39 AM (Merged)
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Did you check applicable fuses? Fuse 10--40 amp in the diagram. That fuse goes hot when the relay is energized. Also, take wiring connector loose from blower motor, use voltmeter between the two terminals at wiring connector, everything turn on, does it show good voltage? This guide can help us fix the problem.

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

Please run down this guide and report back.
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Tuesday, November 3rd, 2020 AT 9:39 AM (Merged)
Tiny
SUEBOXER
  • MEMBER
  • 5 POSTS
I will check didn't know their was one there. Ty
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Tuesday, November 3rd, 2020 AT 9:39 AM (Merged)
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Hope you got it going your way?
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Tuesday, November 3rd, 2020 AT 9:39 AM (Merged)
Tiny
JAFFERSON
  • MEMBER
  • 13 POSTS
  • 2001 DODGE CARAVAN
  • 6 CYL
  • FWD
  • AUTOMATIC
My van's heater is giving me a hard time! I have replaced the auto temp control module and the blower fan but it keeps on quiting on me in the coldest of weather. But every time it stops working, I give it a ground boost and it starts over again. What could the problem be.I just cant stand dealing with this in 30 below.
Any input will be appreciated
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Tuesday, November 3rd, 2020 AT 9:39 AM (Merged)
Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
What quits, the module or the fan? What does "starts over again" mean? The problem occurs again or something starts working properly again? What are you grounding? Before you holler back, check for loose fuses in the Integrated Power Module, (fuse box / computer) under the hood when the problem is acting up.

Caradiodoc
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Tuesday, November 3rd, 2020 AT 9:39 AM (Merged)
Tiny
JAFFERSON
  • MEMBER
  • 13 POSTS
The fan is the one that quits. As soon as I connect a tester from the black wire of the blower fan to ground (car body), the fan starts working normally again. I have checked for loose fuses and connectors but all seems fine. Also noticed today that the fan speed fluctuates when I apply brakes to slow down. Thanks for the assistance
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Tuesday, November 3rd, 2020 AT 9:39 AM (Merged)
Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
Ahh, for the good old days when cars were built with common sense. There are four computer modules involved in running the fan motor. By grounding the black wire you bypassed part of the front blower module. I can't tell you where it is but the two fan wires plug into it with a two-wire connector. Before you replace it, check for continuity to ground on its ground wire. That is the black / orange wire in the other three-pin connector.

Caradiodoc
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Tuesday, November 3rd, 2020 AT 9:39 AM (Merged)
Tiny
JAFFERSON
  • MEMBER
  • 13 POSTS
I understand the module you are talking about is the one behind the glove box just by the fan motor. I had replaced this particular module when I changed the blower fan as mentioned in my earlier post. Anyway I will check for continuity as you suggested and will get beck to you with my findings asap. Thanks
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Tuesday, November 3rd, 2020 AT 9:39 AM (Merged)
Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
Hold on. You said you replaced the auto temp control module. That is the control assembly on the dash. That one has an output wire that goes to the fan module to tell the module how fast to run the fan motor. I would suspect the controller as the most likely cause of the dead fan.

Caradiodoc
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Tuesday, November 3rd, 2020 AT 9:39 AM (Merged)
Tiny
JAFFERSON
  • MEMBER
  • 13 POSTS
I think I may have used a differnet name for a part. The module behind the glovebox is what I replaced and that is what I reffered to as the automatic temp control module.
So are you suggesting, the **** used to control the speed of the fan in the centre of the dash (below audio system) is what the problem could be?
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Tuesday, November 3rd, 2020 AT 9:39 AM (Merged)
Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
That module you replaced gets a coded signal from the main controller. The controller is what the heater and AC controls are part of. Up to at least 1999, the controller was built onto the back of the faceplate around the radio. I think it was still like that for 2001 but I was gone from the dealership by that time. That plate is held on with four screws.

Caradiodoc
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Tuesday, November 3rd, 2020 AT 9:39 AM (Merged)
Tiny
RDEVASTI
  • MEMBER
  • 1 POST
  • 2001 DODGE CARAVAN
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 195,000 MILES
At first the front heater switch would only work on one speed. I was told to replace the blower motor resistor and that would take care of the problem. Unfortunately, this no longer works at all. Could it be the blower that finally went bad?
Thanks!
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Tuesday, November 3rd, 2020 AT 9:39 AM (Merged)
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Have to locate the blower motor and disconnect electric connector
using a test light or volts meter
check for power and ground on both wires
if both yes remove and replace blower motor
if no ground remove and replace speed control resister
if no power check fuses relay and wiring
let me know
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Tuesday, November 3rd, 2020 AT 9:39 AM (Merged)
Tiny
JAFFERSON
  • MEMBER
  • 13 POSTS
Got it. So u think the controller on the dash is the problem? Now would that be the speed control **** or the temp regulation buttons? Also I did check for continuity as u had suggested and it seems to be perfect. Could a weak blower fan be the cause?
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Tuesday, November 3rd, 2020 AT 9:39 AM (Merged)
Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
Both controls are built into the computer module.

You know the fan motor is good because it ran when you grounded it.

Caradiodoc
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Tuesday, November 3rd, 2020 AT 9:39 AM (Merged)
Tiny
JAFFERSON
  • MEMBER
  • 13 POSTS
So whats your opinion? Change the computer module behind the glovebox?
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Tuesday, November 3rd, 2020 AT 9:39 AM (Merged)

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