Re: Heater Fuse Getting Hot???
[Re: Hoop]
#726811
06/17/10 05:26 PM
06/17/10 05:26 PM
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Joined: Dec 2007
Posts: 7,759
So Cal
HealthServices
Why would you even post that?
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Why would you even post that?
Joined: Dec 2007
Posts: 7,759
So Cal
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If it still does it on high speed it is not the resistor, high bypasses the resistor
Allen
Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first.
Life was a little easier when I was just a wrench.
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Re: Heater Fuse Getting Hot???
[Re: Jim_Lusk]
#726813
06/17/10 05:45 PM
06/17/10 05:45 PM
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Joined: Jul 2005
Posts: 1,181
Lost in the ozone again
stubbs300
Vacation
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Vacation
Joined: Jul 2005
Posts: 1,181
Lost in the ozone again
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Quote:
There is no way a fuse should be getting hot. They are rated by the amps the wires/components can handle (actually the fuse is a lower rating), so the only thing that can cause a fuse to get hot is exactly what I'm seeing in your picture, CORROSION. The fuses are not making good contact in the holders due to rust.
Geeeez, no kidding, thats terrible! I would think the fuse would blow first. I'd hate to see what your bulkhead connector looks like. Looks like a fire waiting to happen! 
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Re: Heater Fuse Getting Hot???
[Re: stubbs300 ]
#726815
06/17/10 05:57 PM
06/17/10 05:57 PM
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Joined: Mar 2003
Posts: 18,678
Fresno, CA
Jim_Lusk
I Live Here
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I Live Here
Joined: Mar 2003
Posts: 18,678
Fresno, CA
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Quote:
Quote:
There is no way a fuse should be getting hot. They are rated by the amps the wires/components can handle (actually the fuse is a lower rating), so the only thing that can cause a fuse to get hot is exactly what I'm seeing in your picture, CORROSION. The fuses are not making good contact in the holders due to rust.
Geeeez, no kidding, thats terrible! I would think the fuse would blow first. I'd hate to see what your bulkhead connector looks like. Looks like a fire waiting to happen!
Nope, the rust is LIMITING current. The heat is caused by the extra resistance. Heat in Watts is I^2*R (as I recall). So, with a very low resistance, which fuses and wire are SUPPOSED to be, there won't be much heat, but start adding resistance (even though the current will go DOWN) and you start making heat.
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Re: Heater Fuse Getting Hot???
[Re: SomeCarGuy]
#726817
06/17/10 06:37 PM
06/17/10 06:37 PM
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Joined: Aug 2003
Posts: 4,481
Mesa, AZ
Pat_Whalen
super gas
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super gas
Joined: Aug 2003
Posts: 4,481
Mesa, AZ
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Quote:
Jim is 100% correct.
110%, I believe...
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Re: Heater Fuse Getting Hot???
[Re: scratchnfotraction]
#726819
06/21/10 03:40 PM
06/21/10 03:40 PM
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Joined: Aug 2004
Posts: 489
Partridge, KY
Hoop
OP
mopar
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OP
mopar
Joined: Aug 2004
Posts: 489
Partridge, KY
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Quote:
on my 68 Dart the wiper pivot leaked water and driped right into the fuse box and stayed rust 
those need sand blasted and some die-electric grease 
sure wont hurt to change that fuse thats all rusted on the inside of the glass 
That is a new fuse, wear it got hot, it did that in one mouth!
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