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40 amp blade fuses

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Glenn Sharp

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Post Wed Dec 02, 2009 8:16 pm

40 amp blade fuses

without having anything to test one with is there anything obvious to see, that would suggest it's blown or not ??
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Ian Johnston

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Post Wed Dec 02, 2009 8:29 pm

can you not see the fuse inside it?, through the top or side
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Glenn Sharp

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Post Wed Dec 02, 2009 8:39 pm

It looks like this Ian....

Image



should there be a bit of wire joining the two lumps of solder?......there doesn't apear to be anything there[/img]
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Ian Johnston

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Post Wed Dec 02, 2009 8:43 pm

that s shape in the middle should be complete, without a break, take out another fuse to compare it with, If blown it should be easy to see

Ian
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Glenn Sharp

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Post Wed Dec 02, 2009 8:50 pm

this one is the 40 amp maxi fuse Ian so the S shape in the middle is actually a bit less than half a mil metal rather than wire........
would that really break?

I thought the two lumps of solder would have carried a fuse wire??
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Chris Wool

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Post Wed Dec 02, 2009 9:00 pm

Glenn Sharp wrote:this one is the 40 amp maxi fuse Ian so the S shape in the middle is actually a bit less than half a mil metal rather than wire........
would that really break?

I thought the two lumps of solder would have carried a fuse wire??


yes it will break.

is this out of the car ?
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Graeme Harrold

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Post Wed Dec 02, 2009 9:08 pm

The hole in the "S" is the weak point and the fuse should fail there. Just hold it up to the light and it should be plain to see. If you cant see the "S" shape, then your next thing to look for is Halfords :lol1: or any other auto-factor...........
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Glenn Sharp

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Post Wed Dec 02, 2009 9:14 pm

thanks fellas...

Yes Chris......this is out of the car.....the fan has gone off but I was doubtful whether the fuse had gone

looks like it might be the motor then cos the s is still intact....I was hoping the two bits of solder might have held a wire which had blown but it doesn't sound like it
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Tim Painter

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Post Wed Dec 02, 2009 9:35 pm

Which Fan? What vehicle?
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Glenn Sharp

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Post Wed Dec 02, 2009 9:38 pm

saab 93 Tim........the main cabin fan....no blowers at all
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Tim Painter

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Post Wed Dec 02, 2009 9:41 pm

With a 40Amp fuse at a guess I would think it goes through a relay or a controller of some sort.
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Glenn Sharp

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Post Wed Dec 02, 2009 9:45 pm

to be honest Tim, when we first got the car a couple of years ago we had a similar problem.....It was under warranty so it went into Saab and now you mention it I think they might have said it was something to do with the relays

Is that a big job?
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Tim Painter

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Post Wed Dec 02, 2009 10:01 pm

Had a quick Google, Glenn looks like there is a speed controller behind the glove box when you remove it. Seems like if it's a fan then its a few hrs accessing through the engine bay. I would double check the fuse and any obvious wiring. If you can find this controller behind the glove box then check and clean any connections.

Just a quick Google seems to show the fans have problems.
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Tim Painter

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Post Wed Dec 02, 2009 10:08 pm

Glenn one ref site mentioned 2 fuses one large 40 Amp No 23 and also No 4. I assume one is for the fan load and one for the controller. Maybe worth seeing if you have another fuse gone.
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Glenn Sharp

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Post Wed Dec 02, 2009 10:18 pm

Tim,

I've just been looking on a Saab forum myself and it does seem like it's a problem.....I'll check the other fuses tomorrow in daylight

thanks very much for all your help
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Graeme Harrold

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Post Thu Dec 03, 2009 12:13 am

Get onto the SAAB forums, might be a simple fix like replace motor brushes, then again new fan. Look up GSF autofactors for after market and genuine parts..........
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Phill Fenton

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Post Thu Dec 03, 2009 12:23 am

I hope you introduced yourself first on the Saab Forum. Otherwise you might receive a hostile reaction from long term Saab aficionados for invading their territory. :lol1:
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Glenn Sharp

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Post Thu Dec 03, 2009 8:53 am

:lol1: :lol1:


as soon as I told them I had a Chinese screwdriver they went cold on me :D
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Graeme Harrold

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Post Thu Dec 03, 2009 10:11 am

Glenn Sharp wrote::lol1: :lol1:


as soon as I told them I had a Chinese screwdriver they went cold on me :D


Hope you dint go as far as telling them it came from fleabay and you didnt get ongoing support............ :lol1:
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John Childs

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Post Thu Dec 03, 2009 11:11 pm

You sure you got the right fuse? A fan wouldn't need forty amps.
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Glenn Sharp

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Post Fri Dec 04, 2009 8:54 am

It said in the manual that the 40 amp maxi fuse was for the cabin fan...there was another option for the cabin heaters but that fuse was ok as well
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Tim Painter

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Post Fri Dec 04, 2009 4:54 pm

40 Amps probably because of surge inrush on the startup of the fan.

Glenn have you had the glove box out yet to see if you can find the controller?
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Glenn Sharp

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Post Fri Dec 04, 2009 9:25 pm

Tim I wouldn't have a clue where to start :oops:

I'm hopeless when it comes to things like that but luckily the brother in law is a mechanic and he's having a look tomorrow

cheers for looking into it for me

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