Radiator fan motor keeps blowing 15 amp fuse - Honda Prelude Forum - Prelude Online.com
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Old 05-25-2003, 04:58 PM   #1 (permalink)
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Radiator fan motor keeps blowing 15 amp fuse

Hello

Ok, first I had to get a new radiator fan, because the previous motor & fan was all worn out, but note, it still worked, just the part that held on the fan broke.

I went to autozone a while back and bought a new radiator fan motor for $54, it worked just fine amazingly, but at the end of the day I noticed the 15 amp fuse was blown, after messing around a lot I see the fuse blows everytime, so i just took out the fan and motor for now. I found the 4th generation online manual and tried some tests it was showing in order to find a short but I couldnt find the Radiator Fan timer device that is supposedly on the passenger side of the car or something. Anyways I was wondering if anyone has any idea what I should do in order to fix this so I can have a working radiator fan again. I have a multimeter..etc..just don't really have any idea if it could be a short or if the autozone motor is some how blowing the fuse or something. Any little things I should test or look for would be great


thanks!
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Old 05-25-2003, 08:51 PM   #2 (permalink)
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check the realay which in the under dash fuse box and the thing it is talking about is next to the ecu under the passengers feet. lil black box. dunno how to check if its bad but good luck.
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Old 05-26-2003, 02:08 PM   #3 (permalink)
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I looked at the relay, it "appears" to be fine, how can i tell if its bad?

also is that thing on the passanger side under some metal brackets i have to unbolt?
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Old 05-26-2003, 07:39 PM   #4 (permalink)
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The thing under the passenger side is on the same panel the ECU is on. Just take off like 6 10 or 12mm bolts and the cover will come off, exposing the ECU and the box.

My friend has a spare one lying around if you need it
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Old 05-28-2003, 03:54 PM   #5 (permalink)
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thanks for replies,

how can I tell if the relay is bad?

going to try to test the box thing tonight
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Old 05-29-2003, 02:19 PM   #6 (permalink)
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my windshield wiper fuse does the same thing....

i havent had my windshield wipers in about a year....
rain x has saved me many times...
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Old 05-30-2003, 10:14 AM   #7 (permalink)
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i have the same problem with mine...i swapped my radiator out for a c&r and the c&r comes with a spal fan...and my 15 amp radiator fuse keeps blowing.

Haven't done tests yet, but would like to know if anyone had any other ideas on this.
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Old 05-30-2003, 01:13 PM   #8 (permalink)
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damn, sucks its happening to you too but sort of comforting knowing that others have such a problem as well haha hopefully we can figure out something!
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Old 06-09-2003, 12:38 AM   #9 (permalink)
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argh
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Old 06-29-2003, 10:38 PM   #10 (permalink)
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damn i still havent figured it out, no manuals seem to have any info either
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Old 06-30-2003, 04:20 PM   #11 (permalink)
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I figured out why my 15 amp fuse was blowing....I have a C&R radiator and it came with a Spal 14in. fan. Unknowing to me, the spal had a rating of 18.2 amps..That's why it kept blowing my 15 amp fuse. My friends suggested that since the fan was bigger than my stocker, that it might be working at a higher amperage. I changed it to a 20amp and it works fine now. it's ok to change it to a 20 amp since Honda always underrates their lines.

I would try to find out what amps your fan that you bought from autozone is rated at.

Good luck!
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Old 06-30-2003, 11:47 PM   #12 (permalink)
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Quote:
Originally posted by Ludecrous777
I figured out why my 15 amp fuse was blowing....I have a C&R radiator and it came with a Spal 14in. fan. Unknowing to me, the spal had a rating of 18.2 amps..That's why it kept blowing my 15 amp fuse. My friends suggested that since the fan was bigger than my stocker, that it might be working at a higher amperage. I changed it to a 20amp and it works fine now. it's ok to change it to a 20 amp since Honda always underrates their lines.

I would try to find out what amps your fan that you bought from autozone is rated at.

Good luck!
Interesting , thanks for the reply, I had thought of the same thing before but then I figured the circuitry or whatever within my car was specifically made for 15 amps for that part and was scared to put a 20 amp in there but I will check it out for sure now. Wonder if there is a way to actually check what the amp rating is for the motor.
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Old 07-12-2003, 10:44 AM   #13 (permalink)
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alright I put a 20 amp fuse in there, it lasted almost a day and now the 20 amp fuse is blown. Damn, now I have no idea what to try at all
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Old 07-12-2003, 08:27 PM   #14 (permalink)
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Have you seen the fan actually work? Did you try to hook the fan up directly to power? You may have a faulty fan motor.
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