lordbenny
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posted on 8/5/18 at 03:46 PM |
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Cooling Fan Fuse Melting
So, it’s been pretty hot out lately and after a good blat yesterday I removed my bonnet and noticed the cooling fan fuse had melted! Not blown just
melted....why would this be?
I also tried to start the car at one point yesterday and got....nothing, after the car had cooled for a while it started again. It’s a Zetec powered
Westfield with an MT75 gearbox. Could this be heat soaking and the starter getting too hot (the starter is very close to one in the primary pipes that
I have exhaust wrapped to try to prevent this happening) If so how to I conquer this?
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gremlin1234
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posted on 8/5/18 at 04:08 PM |
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what value was the fuse (before it melted?)
do you have a pic of it?
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lordbenny
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posted on 8/5/18 at 04:14 PM |
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It was red...The plastic melted, I binned it!
Should it be 20amp...in which case isn’t that yellow?
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nick205
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posted on 8/5/18 at 04:17 PM |
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Assume you're running fuel injection?
I ask, because my father in laws carbed car used to not start in hot weather after a run. After much faffing it appeared to be fuel evaporating in
the carb and leaving nothing for the engine to start with.
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lordbenny
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posted on 8/5/18 at 04:21 PM |
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quote: Originally posted by nick205
Assume you're running fuel injection?
I ask, because my father in laws carbed car used to not start in hot weather after a run. After much faffing it appeared to be fuel evaporating in
the carb and leaving nothing for the engine to start with.
It’s on carbs....
I’m sure it’s not fuel...it doesn’t even click when the starter button is pressed. Once cooled down it’s ok.
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gremlin1234
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posted on 8/5/18 at 04:42 PM |
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quote: Originally posted by lordbenny
Should it be 20amp...in which case isn’t that yellow?
red is 10A
20A is yellow
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lordbenny
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posted on 8/5/18 at 04:45 PM |
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quote: Originally posted by gremlin1234
quote: Originally posted by lordbenny
Should it be 20amp...in which case isn’t that yellow?
red is 10A
20A is yellow
So, if I’ve change to a yellow from a red would it be less likely to melt?
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theduck
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posted on 8/5/18 at 05:04 PM |
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It shouldn’t have melted in the first place, melting suggests poor contact causing resistance causing heat
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DW100
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posted on 8/5/18 at 05:05 PM |
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No
The melting is likely to be heat produced by a poor contact in the fuse holder.
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lordbenny
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posted on 8/5/18 at 05:11 PM |
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Ok, so I’ve crimped the holder connectors together and filed the fuse pins....let’s see if that does the trick!
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gremlin1234
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posted on 8/5/18 at 05:44 PM |
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quote: Originally posted by lordbenny
Ok, so I’ve crimped the holder connectors together and filed the fuse pins....let’s see if that does the trick!
next thing to do is put a
mulimeter in circuit, to see what the actual current demand is.
note never up-rate the fuse just because it fails, unless you are confident that the rest of the wiring is designed to take the load, and you
understand why its drawing so much.
[Edited on 8/5/18 by gremlin1234]
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