Keeps poppinv the 15 amp main fuse under the hood

Tiny
JIMFOWLER
  • MEMBER
  • 2001 KIA SPORTAGE
  • 2.0L
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 100,000 MILES
Was running fine up to a couple days ago, now it will constantly blow the main 15 amp relay fuse, will start once a day then start popping the fuse after it has been moved
Friday, October 24th, 2014 AT 8:37 AM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,864 POSTS
A simple trick to finding a short is to replace the blown fuse with a pair of spade terminals, then use small jumper wires to connect them to a 12 volt light bulb. A brake light bulb works well. When the circuit is live and the short is present, the bulb will be full brightness and hot so be sure it's not laying on the carpet or against a plastic door panel. Now you can unplug electrical connectors and move things around to see what makes the short go away. When it does, the bulb will get dim or go out.
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Friday, October 24th, 2014 AT 4:49 PM

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