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post #1 of 32 (permalink) Old 08-30-10, 08:19 PM Thread Starter
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Interior blower fan not working

Hey guys, we just went on a vacation. we blew a fuse for the cigarette lighters. I replaced that fuse, but after that the interior blower fan wouldn't work. if you put your hand close to the vents, you can feel the heat so that's not the problem, but now the interior fan doesn't work. Where would I find the fuse/relay in hopes that is the problem.
thanks in advance


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post #2 of 32 (permalink) Old 08-30-10, 08:23 PM
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Re: Interior blower fan not working

What year is it?

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post #3 of 32 (permalink) Old 08-30-10, 08:28 PM
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Re: Interior blower fan not working

I looked at some of your older posts and see that it'sa 2001 Grand Marquis. The 30amp. #8 fuse inside is for the blower motor. Have you tried high sped too?

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post #4 of 32 (permalink) Old 08-30-10, 09:31 PM Thread Starter
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Re: Interior blower fan not working

Hello, thanks for your help. yes it is a 2001 grand marquis. I checked the #18 (#8 is the coil over plug, etc) 30 amp fuse and it's good. This makes matters worse. When I move the dial to high, it makes a clicking noise which would be common but usually the fan would go on. When i go for example from defrost to vent to floor, it makes the hissing noise too which would also be common, but no fan!
The fuse is good, but still no blower fan. Is there any other fuse or relay I should check?

thanks,
Dennis

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post #5 of 32 (permalink) Old 08-30-10, 09:37 PM Thread Starter
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Re: Interior blower fan not working

I searched, and perhaps this is a more common problem than I thought. this is one suggestion a guy gave
---------------------------------------
Check fuse supplying fan is not blown,
Check blower control switch is operating OK,
Check relay controlling fan is operating OK,
Check variable speed resistor pack is not faulty (the resistor pack is usually located in the blower ducting, in the blower airflow),
Check blower motor ground connection is not missing.
----------------------------------------
I checked the fuse and it is ok. Some of those suggestions seem dead last to look (the ground), but the third option of checking the relay seems logical since we did also blow the cigarette lighter at the same time. Where would i check for this?

thanks

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post #6 of 32 (permalink) Old 08-31-10, 05:39 PM Thread Starter
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Re: Interior blower fan not working

I looked into it again. We originally blew the cigarette lighter fuse. I replaced it, but now the regular cigarette lighter works, but now the "auxilliary powerpoint" cigarette lighter doesnt work (what the stuff was plugged into when we originally blew the fuse) I am assuming somehow the aux powerpoint cigarette lighter and the heater blower fan are linked somehow because it's odd that they don't work, but their fuses are still good.

anyone know?

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post #7 of 32 (permalink) Old 08-31-10, 06:35 PM
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Re: Interior blower fan not working

They're on two different circuits. Test for power loss one circuit at a time. One has power in the run position and the other has battery power.

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post #8 of 32 (permalink) Old 08-31-10, 06:39 PM Thread Starter
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Re: Interior blower fan not working

Could blowing the fuse on the cigarette lighter ruin the blower resistor unit? Apparently that part is common to go on the grand marquis

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post #9 of 32 (permalink) Old 08-31-10, 06:44 PM
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Re: Interior blower fan not working

That wouldn't affect it. If the resistor is bad, you'll have high speed only.

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post #10 of 32 (permalink) Old 08-31-10, 07:19 PM Thread Starter
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Re: Interior blower fan not working

cool, thanks. I will try to locate the problem. I am likely out of luck, but it's worth a shot

thanks for the help! :)

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