what size fuse 4Taurus fan or no fuse at all?

bryanrevans

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Sep 10, 2004

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Chicopee,Mass

Jun 10, 2005

#1

• Jun 10, 2005

• #1

the fan controller came with a 25 amp fuse/holder I got a 95 3.8l taurus fan.Do I even need to run a fuse in front of fan?

 

J

jerry beach

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Ocala,FL

Jun 10, 2005

#2

• Jun 10, 2005

• #2

It is supposed to have a fusible link, or a "slow blow" fuse near the battery. A regular 25 amp fuse will likley not be enough. That fan may pull 30-40 amps on start-up, then drop off to around 15-25 amps when it gets up to speed. The start-up spike can be as high as 5 times the running amps. Thats why it needs a slow blow fuse. I was running a relay and no fuse because my fuse kept popping. Now I run a DC controller, it has circuitry to cut off the fan in the event of a failure or overheat.

 

bryanrevans

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Sep 10, 2004

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Chicopee,Mass

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#3

• Jun 10, 2005

• #3

My controller has a 12v relay,Should I do away with the fuse.Is there a chance my fan would burn up?

 

J

jerry beach

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#4

• Jun 10, 2005

• #4

Do it right, go to Napa or something and get a fusible link. Tell them what you are running and they can hook you up. No since in having you car catch fire cause you were a bit lazy.

 

J

JRPony

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Jun 10, 2005

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Las Vegas, NV

Jun 10, 2005

#5

• Jun 10, 2005

• #5

bryanrevans said:

My controller has a 12v relay,Should I do away with the fuse.Is there a chance my fan would burn up?

Click to expand...

The fan is still drawing a lot of current regardless of whether or not you use a relay. If you don't install a fuse in series with the fan, you very well could start a fire under your hood.

 

bryanrevans

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Chicopee,Mass

Jun 10, 2005

#6

• Jun 10, 2005

• #6

I will take this advice.I am about to go on the road soon from Cali to Mass.Thanks.What size fuseable link??????

 

HISSIN50

"How long does it take to get help in here?

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Nov 29, 1999

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#7

• Jun 10, 2005

• #7

What sized relay did the fan controller come with? I would imagine it is similar to the fuse rating, which might not last too long. I would want to run a 75 amp relay - you dont want the relay operating at full capacity. And like Jerry wisely mentioned, start up draw can be double operating draw (with other fans; I dont see the efficient 3.8T fan being much different).

Good luck.

 

bryanrevans

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Sep 10, 2004

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Chicopee,Mass

Jun 10, 2005

#8

• Jun 10, 2005

• #8

its got 12v then 30/40amp after that.What does that mean? the 30/40 and another Q.The fan is 2 speed.It cools sooo good what would be the thought on just running the low speed.Does that draw the high spike too?

 

bryanrevans

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Chicopee,Mass

Jun 10, 2005

#9

• Jun 10, 2005

• #9

R u ready for another dump 1? The relay that is on top of controller does that unplug?I assume the 30/40Amp is refering to the twin fan hookup?Could I [plug a 75amp relay into this setup somehow??

 

M

Mattys5Oh

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Sep 28, 2002

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Western, Mass

Jun 11, 2005

#10

• Jun 11, 2005

• #10

I ran 2 pieces of fuseable links spliced together in line with my wiring.. Effective and much cheaper then some of the fuses I've seen some of these guys run on their fans.

 

HISSIN50

"How long does it take to get help in here?

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Jun 11, 2005

#11

• Jun 11, 2005

• #11

Jerry Beach is the one to ask about running on low speed (which he used to do before upgrading to his variable controller).

It would be ugly, but if you want to use a higher rated relay (if you are gonna run high speed or low speed draw is too much, etc), i would leave the controller's stock relay and use it as a trigger for the bigger relay. It will be ugly and redundant, but it works. Then use your own wiring to/from the new relay since the wiring with the relay you have is likely only designed for a 30 amp draw (E.g. if your fan drew 50 amps, it should fry the wiring).

I am sure others will have better ideas for you. Good luck.

 

bryanrevans

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Chicopee,Mass

Jun 11, 2005

#12

• Jun 11, 2005

• #12

What size/color links.You near Chicopee?

 

bryanrevans

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Chicopee,Mass

Jun 11, 2005

#13

• Jun 11, 2005

• #13

I hooked up the low speed acouple hour ago the fuse is holding.Must be lower than 30 amps.