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Thread: EFI Fuse keeps blowing! Help...

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  1. #1
    Banned savanna13's Avatar
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    Exclamation EFI Fuse keeps blowing! Help...

    I have a N/A 91, and I'm having a strange issue.

    The EFI fuse keeps blowing out on me. I replaced the EFI relay after it blew the first several fuses (which it would do immediately on startup.) After replacing the relay (the little round one in the box that looks like R2D2), I replaced the fuse again and drove off. It ran well for the rest of the day. I parked the car and managed to kill the battery. I jumped it, and after discovering that it wouldn't crank, I checked the fuse again. Blown.

    I replaced the fuse one more time, and cranked the car up. I revved the engine, and it blew the fuse. I replaced it one more time, and turned the key to the forward position, and noticed smoke coming from the bottom right part of the engine bay, closest to the left rear wheel.

    I killed the ignition, pulled the fuse, and here I am.

    Any ideas, gentlemen? Your help is greatly appreciated.

  2. #2
    Super Dave Z U L8R's Avatar
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    yeah, lol, there's a short. luckily it's popping the fuse and not the computer. unless the computer's already screwed and that in turn is popping the fuse.

    see what's going on on the left part of the engine bay where you said you saw smoke coming from, your problem lies therein. repair the wires that got fried, then test again with a new fuse. if fuse pops again or your repair gets smoked. you gotta trace down the short in that EFI circuit.

    basically look up what things are on that circuit, and you're going to be looking for the wire that's supposed to be ground but has 12v on it. since it doesn't pop right when you replace the fuse but when you turn the key on, then you have even more help to tracing it down.

    looking at that circuit see what all things get powered by the key in the ON position. then go through the path that the current travels (in diagrams they usually have arrows) and test each stopping point until you find the faulty component/f***ed up wire. g/l =]
    Last edited by Z U L8R; 04-23-2007 at 08:43 AM.

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