Blower motor cuts in and out no matter what fan speed it is on

JOSHMINK26

MEMBER
2004 DODGE DAKOTA
3.7L
6 CYL
2WD
AUTOMATIC
190,000 MILES

Blower motor quits working for some reason and I can hit it and it will work again and sometimes it will rev up and down.

Thursday, January 27th, 2022 AT 8:49 PM

3 Replies

SQM

MECHANIC
6,383 POSTS

Hello,

Sounds like this could be a connection issue or internal loose or worn components for the blower motor or the resistor.

A good first step would be to access the blower motor and make sure the wiring harness is secured.
Look for any corrosion or pushed out or burn pins.
Over time due to a loose connection, you will have burnt pins.

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

I have attached diagrams for your reference.

Please let me know what you find or if you have any questions.
Thank you.

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Thursday, January 27th, 2022 AT 9:19 PM

JOSHMINK26

MEMBER
2 POSTS

Okay, thank you. I will check it in the morning. The blower sounds good and works at every speed. It will come on soon as I start truck and sometimes it will work fine and other days it will just cut in and out and rev up and down. I can smack it when it cuts off and it will come right on and work.

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Thursday, January 27th, 2022 AT 9:42 PM

SQM