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Old 07 Mar 2011, 01:31 pm
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Default 88 honda civic runs fine at idle but blows main fuse when you drive it?

we replaced alternator,starter,all wiring between alt and fuse box replaced,all wiring between fuse box and batt replaced,computer replaced,distributor replaced,several sensors runs fine at idle for hrs but when you drive it up the road the 60amp main fuse blows before you make it 100ft.
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Old 07 Mar 2011, 01:46 pm
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I would recon its the alternator that may be faulty. Might be the coil but not too sure about that.
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Old 07 Mar 2011, 02:01 pm
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Posts: 343

The voltage regulator could have a short internally inside of it this could cause the fuse blowing issues but there is a lot of different things that could cause your problem but for sure it's a dead short that is occurring or a strong over draw.

The blown fuse can tell you a lot bec if it blows black that usually tells you that it's a real dead short, especially if the fuse is 60amps that is blowing.More then likely that 60amp fuse feed several key circuits and there is other fuses linked to it.

I'd take a good look at the fuse and what it feeds ,so far from the diagrams I've read they don't show any fuse that is 60amp and most of the circuits all are mentioning fuses that are inside the vehicle.What ever circuits aren't vital that are fed power by that 60 amp fuse could be disconnected one by one to see what circuit has the short or over draw.

Hope that helps and best of luck.By the way check the wiring that runs close to the engine and any extreme heat, also you might be able to get the regulator etc from a U pull auto wreckers for fairly cheap.
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