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Blower motor not working

Tiny
DAVID.LAUGHLIN
  • MEMBER
  • 1 POST
  • 2007 DODGE CARAVAN
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 60,000 MILES
The front A/C blower does not work. The back blower does work. The blower was working fine in the morning. There were no noises to indicate the blower was going bad. I have checked the fuses and relays under the hood, all are good. What else could it be?
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Tuesday, November 3rd, 2020 AT 9:08 AM (Merged)
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
May be a bad blower motor. You will need to use a test light and check for power at the blower motor when in ON position. If it has power the motor may be bad, if not it could be a bad fan speed resistor or switch
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Tuesday, November 3rd, 2020 AT 9:08 AM (Merged)
Tiny
PUFFNSTUFF
  • MEMBER
  • 59 POSTS
  • 2007 DODGE CARAVAN
  • 3.2L
  • 4 CYL
  • 2WD
  • 210,000 MILES
Hi, when I turn on the wipers the radio shuts down. When I stop the wipers radio comes back on. Blower motor also not working. Help anyone. Thanks!
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Tuesday, November 3rd, 2020 AT 9:08 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check fuse and relay for blower motor under hood. Then check ground on battery to body and for cleanliness on battery terminal ends.
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Tuesday, November 3rd, 2020 AT 9:08 AM (Merged)
Tiny
PUFFNSTUFF
  • MEMBER
  • 59 POSTS
Thanks for helping. Radio and wipers are now fixed, but blower motor still not working. I'm getting no voltage from live wire to blower motor resister with key on and switch set to high. Fuse is good and relay is good. Any advice would be much helpful. Thanks!
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Tuesday, November 3rd, 2020 AT 9:08 AM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Hey PUFFNSTUFF,

Use a test light to see if the blower motor is getting power and a good ground, most likely the blower motor is bad, here is a guide that will help you.

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

Run some tests and get back to us so we can continue helping you.

Best, Ken

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Tuesday, November 3rd, 2020 AT 9:08 AM (Merged)
Tiny
PUFFNSTUFF
  • MEMBER
  • 59 POSTS
Hi. Think it may be a fuse box issue. No power to resistor. Bypassed relay and everything works. Thanks for helping!
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Tuesday, November 3rd, 2020 AT 9:08 AM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
That relay is controlled by the body module, here is a wiring diagram. It could need replacement. Test for trigger at the relay and go from there,

Here is a guide to test from

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Please let us know happens so it will help others.

Best, Ken
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Tuesday, November 3rd, 2020 AT 9:08 AM (Merged)

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