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rpmdiag
rpmdiag, Tech and Instructor
Category: Ford
Satisfied Customers: 6855
Experience:  Since 1975
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My 2000 linc towne car, blower fan works intermitently both

Customer Question

my 2000 linc towne car, blower fan works intermitently both a/c or heater
Submitted: 2 months ago.
Category: Ford
Expert:  Super Mechanic replied 2 months ago.

Hello and welcome. My name is ***** ***** you for visiting the site, I am reviewing your question and will reply shortly, thanks.

Expert:  Super Mechanic replied 2 months ago.

When it is not working, do you know if there is power to the blower motor?

Customer: replied 2 months ago.
power to blower
Expert:  Super Mechanic replied 2 months ago.

I see, thanks and is there also a ground connection at the other terminal?

Customer: replied 2 months ago.
dont think its electrical,,dash board controls are they electrc or vacuum
Expert:  Super Mechanic replied 2 months ago.

All electronic on the auto temp. Is it that the blower does not come on?

Customer: replied 2 months ago.
Sometimes. It works and then other times nothing
Expert:  Super Mechanic replied 2 months ago.

Yes, that could be in the blower motor or the blower motor controller and the only way to know is to do the test, thanks

Customer: replied 2 months ago.
sometimes it does and works normal,then wont come on at all
Expert:  Super Mechanic replied 2 months ago.

That is electrical. We can discuss it for as long as time allows and still never know until the test is done, thanks

Customer: replied 2 months ago.
blower has power at all times
what tests do I need to do?
Expert:  Super Mechanic replied 2 months ago.

The blower motor is controlled by the blower motor controller through the ground circuit. Please see attached diagram, thanks

Expert:  Super Mechanic replied 2 months ago.

Which is why I asked if there was a ground at the other wire.

Customer: replied 2 months ago.
think this is kinda bullshit
Expert:  Super Mechanic replied 2 months ago.

I didn't make them that way, sorry.

Expert:  Super Mechanic replied 2 months ago.

That is just how the circuit is designed and you can either change a part or test the circuit.

Expert:  rpmdiag replied 2 months ago.

Hi, welcome to Just Answer. I'm Ron and I will be helping you today.

Jerry was spot on with the ground circuit being a possibility, but you can easily test the motor with an ammeter to see how much amperage draw it has when it's acting up.

For obvious reasons, the amperage draw will be fine if it's working fine.

From My experiences though, you have a flat spot on the armature of the fan motor and a new motor will fix it.

Thanks, Ron

Expert:  rpmdiag replied 2 months ago.

Hi, I'm just following up with you to see if you have any more questions.
Thanks, Ron

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