Jimmycinto
Member
Turn key truck starts, blower fan doesn’t work. Open hood, drop it from 12”; fan starts /works ,ac and heat. 2004 4L 6. Anyone have an idea of what I might need to fix…
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Blower fan issue
- Thread starter Jimmycinto
- Start date
Uncle Gump
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Sounds like a poor connection getting rattled enough to start working when you drop the hood.
Pop the hood and start wiggling connectors and harnesses to see if you can affect operation.
Pop the hood and start wiggling connectors and harnesses to see if you can affect operation.
Curious Hound
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I agree with Gump. Sounds like loose connection. I would begin looking at the connection to the blower motor and the power resistors. Might even be a rusty broken resistors assembly.
Jimmycinto
Member
Thank you. When the storm passes my area, I will get to playing with it, and let you know if I find the issue.
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The speed reduction resistors are a popular repair including the wiring too. Autozone carries both, so be sure you check out the wiring. The blower R&R is also tight, smashing the squirrel cage fan is allowed, no worries. IF you have cruise control, that moves away easily, then you can get to the blower, resistors & harness for replacement. Did mine in an hour. It's nice having more than on fan speed though here in Texas when it's hot, everything's on "full". Very popular repair.
Jimmycinto
Member
The resistor was very rusty, the area was filled with leaf debris. After cleaning and replacing the wires, connector and resistor; all seems to be good.
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