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Heater fan

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Old May 29, 2019 | 10:59 AM
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Heater fan

My 1994 E350 idi heater fan stopped blowing.
i checked the fuses ..couldn’t find any thing.

anyone know what it might be or is it one of those metal looking fuses in the fuse box?

Is it possible the heater fan fuse could be in the engine compartment?
 
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Old May 29, 2019 | 11:37 AM
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Fuse F in the engine compartment Fuse #9 in the interior, bad relay, bad Resistor, or bad fan motor.

the Connector on the motor Pigtail is Famous for burning too <<<=== I would look there first if the 2 fuses are good, get your volt meter out
 
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Old May 29, 2019 | 11:48 AM
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wiring for your heater


 
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Old May 29, 2019 | 01:26 PM
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Thank you

I’ll get on it
 
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Old May 29, 2019 | 02:35 PM
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How do you pull out those big fuses in the engine compartment? Do they just pull out like the smaller fuses in the interior fuse panel?
 
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Old May 29, 2019 | 03:49 PM
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yeah they are just Maxi Fuses, I have a puller for them but you can wiggle them out with a screwdriver or some pliers, But ya really don't need to pull em to check em, just measure voltage on both sides to know if it is open or not... a 12 Volt test lamp is really handy for this.


Connect Black meter lead to Ground then Probe the little metal tabs in the top of the fuse ..... IF there is 12 Volts on one side then there should be 12 Volts on the other side too... IF not then the Fuse is Open or Blown.
 
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Old May 29, 2019 | 04:18 PM
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Great...thx
 
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Old May 30, 2019 | 12:50 PM
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Hey my friend..it was the resistor/relay mounted on the firewall.
All is well.

very much appreciate your help.
 
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Old May 30, 2019 | 03:23 PM
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