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Fusible link on 89 Chevy Silverado

Truck was running and then died, lost all power etc. Found Fuse link at battery and at terminal block on firewall going to alternator. I have replaced both and had my alternator checked, ran wires and found no issues. I replaced both fuse links and re attached battery. Within 3 minutes both fuse links burned out again. Any ideas?

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Something is shorting, make sure your hood is not touching positve side of battery, or battery is secured and not moving around and touching something

Posted on Apr 15, 2014


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Posted on Jan 02, 2017

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SOURCE: 04 Tahoe blowing fusible link in fuse box for starter

ON the fuse box cover.
IS there a especification for the funtion of the fuse. or the number of the location of the fuse.
If you can give me, I can try help you. as more I can.

Thank you for use fixya.

Posted on Jul 24, 2008

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SOURCE: Blowing 80 amp fusible link for Battery.

this link may help you guys. You'll have to check a few to find what you need but I suspect, if you can interpret the drawings, you'll narrow it down, otherwise take a copy to your mechanic, and it might help him.
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Posted on Nov 30, 2008

SOURCE: battary light on , engine cut off car won't crank

sounds like it's your alternator, your alternator charges your battery and runs car once it is started. if you have a bad alternator your battery light will come on, and shortly after your vehicle will die, unable to restart without a jump. I would take your battery to autozone or an auto shop to have your battery and alternator tested.

Posted on Jan 28, 2009

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SOURCE: 86 Tercel 2wd wagon won't charge it's battery

clean battery terminals ,bring battery to be tested after charging, after reinstalling battery run car and test alternator output it should be a minimum of 13-14volts if it is under 13 replace alternator , use a voltmeter set on 12 volt 10 amp dc to check the wire to check is located on the back of the alternator covered with a rubber grommet of course hold negative wirw on volt meter to ground and touch red wire to big terminal on back of alternator while car is running should have 14 volts or at least 13 volts

Posted on Jun 24, 2009

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SOURCE: My son hooked up jumper cables with the polarity

any auto parts store. find out what guafe wires these links are. If not imprinted on these links get number 8 wire links kits

Posted on Mar 23, 2010

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1 Answer

Why does my truck keep blowing a fusible link

The Fuse Link That You Are Writing About Should Be Black, Going To A Red Wire. It Is On Junction Block, Not On Battery. It Feeds The Fuse Panel And The Ignition Switch. Junction Blocks Had Problems ie: Dirty and/or Loose Connections On Links.
Suggest you clean ENTIRE junction block and connections, and make sure all are SNUG--Don't Overtighten. If any won't tighten Junction Block has to be replaced. If further help needed, I have complete Wiring Diagram.

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these links are normally found leading to the positive connection of battery or near the's a positive wire with a fuse inside the wire look carefully and you will see them they normally have a swell mostly at the end of wire.

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Wiring diagram for 1987 chevy silverado 10 free downloands

Sorry, I don't have good enough wiring diagram for your model year?
Check for battery junction block, under the hood, one of the positive battery cables should go to it, see if there is a bunch of fusible links, check them. Use a testlight on out put side of link, check for voltage. If there is a handful of links, sorry, I don't know which one. Maybe you will get lucky and the first one you check will be the faulty one, where applicable. I don't usually get that lucky. If you make a hole in wire insulation, use finger nail polish or something to cover the holes.
I thought about using jumper wire for B+ to ecm B fuse for testing. I don't want to suggest anything that might cause you more problems, you need to fix it properly.

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While driving 1991 chevy cavalier gauges went wacko started cutting out lost charge in battery and died.Checked battery and alternator and both are fine.What should i check next?

Check all ground connectios first, make sure they are clean and tight, then check positive connections, use an ohm meter if possible. MAKE SURE YOU DIS-CONNECT THE BATTERY WHEN USING AN OHM METER.. Thanks Ray

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You lost a major power feed circuit. It could be because of a main fuse or a fusible link wire.
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I own a hj toyotaq landcruiser 1990.. I attempted to start the engine and I lost all lights and power once I turned the key.. I have checked the battery and the fuses.. Still nothing

The most common is dirty battery terminals.
There is also a master fusible link that is much larger than a normal fuse. Do not rely on visual fuse check. You need to use a test light, and trace first battery +, then cable, then starter, then fuse block, etc.
It is a linear search until you don't get power anymore.

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Car shorted out no power will not start

Hello! You'll need a multimeter set on the 50 volts dc scale. Pull the 10A fuse for ECM/IGN...Check for battery on the feed side of the fuse with the key on. If you read 12 vdc then battery is present at the fuse block. If battery is present at the block...carefully pull one fuse at a time and, rather than seeing if it's blown, check fuses with a meter. Set the meter on the X10 ohm scale. With battery at the block; Fuses are blown at the inside block.

If there is no battery coming to the fuse block inside the car; Go under the hood and check the fuses in the main fuse block. Check in the same fashion that was explained earlier.

I believe that the high amperage fuses, as in 60 or 80 amps that feed the ignition and supply battery to the inside fuse block are blown.

Also check for battery at the starter motor. This is a direct supply from +post on the battery itself. If no battery is present there may
be a fusible link installed. Disconnect the positive cable from the battery; Again use the ohm meter set on X10 scale and check to see if this cable is open. A fusible link may be installed between main battery and the red wire that runs through the firewall into the inside fuse block.

If you need further assistance write a comment...I am at your disposal like a garbage truck.


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I'm not familiar with your type of vehicle, but:-

Look for a 'fusible wire link' that may be down near the starter motor battry power connection cable. If fused, it will be melted.

Most vehicles hase either a fusible link or a high power fuse in between the battery output and the main vehicle distribution power bus.

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It sounds like either alternator or computer, I f you can get it to run on its own pull the positive battery cable off the battery and if it dies its your alternator. And this is no real way to check the computer except going up to a AutoZone and they can check codes for free

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