Blowing Fuses
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New User
Joined: Jun 2006
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Blowing Fuses
I have a 1987 F800 370 4V. It keeps blowing the 10 amp fuse for the fuel pump.I tried a 15 amp and it still is doing it. At idle it is ok but when you drive it the fuse would blow. I checked the wires they seem to be fine. Any Ideas?
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Joined: Jul 2004
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I don’t know but here’s a guess. If you rev it while stopped does the fuse blow? If not my guess is the power wire may be shorting to something while you drive. Try running a new power wire to the pump and see if it still happens or add a slightly smaller fuse, say 10a, in line right at the pump while you have a 15a in the fusebox. If the fuse in the fuse box still blows and the other doesn't, it’s definitely a short in the line. If the one at the pump goes first then the pump is drawing too much at speed. I would think that would be less likely. Good luck.
Last edited by Netfly; Nov 10, 2006 at 04:06 PM.
